Journal articles: 'Titanium ores'

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Mitrofanova, Galina, Valentina Marchevskaya, and Anastasiya Taran. "Flotation separation of titanite concentrate from apatite-nepheline-titanite ores of anomalous zones of the Khibiny deposits." Записки Горного института 256 (November 10, 2022): 560–66. http://dx.doi.org/10.31897/pmi.2022.81.

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Titanium raw materials are widely used for the synthesis of various functional materials – sorbents of radionuclides and rare earth elements, various additives, filler pigments, etc. Since most of titanium concentrates are imported, in line with the import substitution program, production of titanite concentrate from apatite-nepheline ores of the Khibiny deposits is a promising trend for supplying national industry with titanium raw materials. The article presents the results of laboratory studies of flotation separation of titanite concentrate from apatite-nepheline-titanite ores extracted from the upper ore horizon of the Koashvinskoye deposit, where titanite-enriched ores are concentrated. Recovery of titanite concentrate was accomplished using two reagent modes – a mixture of alkyl hydroxamic and carboxylic acids with the addition of distilled tall oil and a mixture of tall oils with the addition of polyalkyl benzene sulfonic acids. The results of the research showed that the first flotation mode, which allows a selective recovery of titanite into the concentrate (titanite content in the concentrate was 93.5 %) is the most efficient. It was shown that flotation separation of titanite concentrate is preferable compared to the chemical method based on sulfuric acid leaching.

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Dmitriev, Andrey N., R. V. Petukhov, G. Yu Vitkina, Yu A. Chesnokov, S. V. Kornilkov, and A. E. Pelevin. "The Reduction Processes of the Titanium Containing Iron Ores Treatment." Defect and Diffusion Forum 369 (July 2016): 6–11. http://dx.doi.org/10.4028/www.scientific.net/ddf.369.6.

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The questions of metallurgical processing of titanium-containing ores are considered. The ores and concentrates of the Kachkanarsky deposit of low-titanous and high-titanous are studied. The reducibility, durability, temperatures of a softening and melting of metallurgical iron ore raw materials are studied in vitro. Via X-ray the structural analysis are carried out. The calculations by means of mathematical models of pyrometallurgical processes are executed. Possibility of the processing of these ores according to schemes is shown: «blast furnace melting − converter melting» and «metallization – electric melting».

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Degodya, E. Yu, and O. P. Shavakuleva. "Elaboration of a technology for production conditional ilmenite concentrate by enrichment of titanium-magnetite ores." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 5 (June 20, 2019): 572–76. http://dx.doi.org/10.32339/0135-5910-2019-5-572-576.

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The titanium-magnetite ores keep an important place among complex iron-containing ores. Utilization of these ores, comprising ores of Kopanskoe deposit, in steel industry is a serious problem, requiring for its solving enrichment resulting in obtaining iron-vanadium and ilmenite concentrates. A principal flow-chart of titanium-magnetite ores enrichment with obtaining conditional iron-vanadium and ilmenite concentrates elaborated. Results of flotation tests of non-magnetic fraction of Kopanskoe deposit titanium-magnetite ores, which is difficult for concentration. Application of flotation process for Kopanskoe deposit titaniummagnetite ores enrichment, which is difficult for concentration, enables not only to improve the enrichment indices, but considerably simplify the process chain of the plant equipment by excluding a big number of gravitational facilities. It was shown, that ilmenite and rutile flotation is successfully carried out in an acidic environment with the use of oleic acid, kerosene, sodium fluoride, sulfuric acid, foam activator VKP. The elaborated reagent complex provides obtaining conditional ilmenite concentrate. As a result of enrichment by application the elaborated magnetic flotation technology, iron-vanadium concentrate with a mass fraction of iron equal to 63.4 % and titanium dioxide – 4.5 % as well as ilmenite concentrate with a mass fraction of titanium dioxide equal to 45.2% obtained. The elaborated technology can be used for titanium-magnetite ores of Medvedevskoe, Kusinskoe, Chernorechenskoe deposits.

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Vasylenko, A. P., and V. V. Sukach. "INCREASING OF THE MINERAL AND RAW-MATERIAL BASE OF UKRAINE WITH NEW OBJECTS OF TITANIUM ORES." Mineralogical Journal 45, no. 3 (2023): 97–105. http://dx.doi.org/10.15407/mineraljournal.45.03.097.

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Ukraine has the largest reserves of titanium in Europe. Over the past decades, in the country has also established and estimated significant amounts of promising resources of titanium ores. Now the resource potential is several times the reserves of industrial ores. The mineral base of titanium ores is represented by magmatic in bedrocks, residual and alluvial deposits. New objects with estimated resources are located within the western part of the Ukrainian Shield. These are the of titanium ores with apatite in mafic rocks and their crust of weathering. In the northeast of the Ukrainian Shield there are titanium deposits with zirconium. In the central part also found magmatic, residual and alluvial deposits. And, finally, prospective resources of complex vanadium-containing titanomagnetite ores of the central part of the Pokrovo-Kyriiv structure in the junction zone of Donbas and the Azov megablock were evaluated. In order to provide potential investors with information on the existence of investment objects with certain resources and geological and economic evaluation, the State Service of geology and subsoil of Ukraine launched an investment atlas of the subsoil user. In order to supplement the investment atlas with objective data on the resource potential of solid minerals of the country, it is necessary to create an information base of promising and forecasted resources of metallic and non-metallic minerals and, first of all, those related to strategic mineral raw materials. In connection with the rapidly growing demand for titanium-zirconium products in the world, there was a need to involve in the development of new objects of titanium ores with favorable economic indicators. The accumulated material on the state of the resource potential of titanium and titanium-zirconium ores provides an opportunity to supplement new content of investment information for subsurface user.

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Dmitriev, A. N., G. Yu Vit’kina, and R. V. Alektorov. "Pyrometallurgical processing of high-titaniferous ores." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 76, no. 12 (December 23, 2020): 1219–29. http://dx.doi.org/10.32339/0135-5910-2020-12-1219-1229.

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The future development of Ural mineral and raw materials base of steel industry is considerably stipulated by the development of deposits of titanium-magnetite ores, the reserves of which are accounted for near 77% of iron ores of Urals. It was shown, that the content of titanium dioxide as well as harmful impurities in the titanium-magnetite have the decisive meaning for selection of processing technology of them for extraction out of them vanadium and other useful components. Technological schemes of the titanium-magnetite enrichment and industrial methods of titanium-magnetite concentrates processing considered. Examples of titanium-magnetite processing by coke-BF and coke-less schemes given. The problems of blast furnace melting of titanium-magnetite ores highlighted. Main problems relate to formation of refractory compounds in a form of carbo-nitrides during reduction of titanium and infusible masses in blast furnace hearth. It was shown, that intensification if carbides precipitation is stipulated by increase of intensity of titanium reduction at increased temperatures of a heat products and requires the BF heat to be run at minimal acceptable temperature mode. Technological solutions, necessary to implement in blast furnace for iron ore raw materials with increased content of titanium processing were presented, including increase of basicity of slag from 1.2 to 1.25-1.30, increase of pressure at the blast furnace top from 1.8 to 2.2 atm, decrease of silicon content in hot metal from 0.1 to 0.05%, application of manganese-containing additives. It was noted, that theoretically the blast furnace melting of titanium-magnetite is possible at titanium dioxide content in slag up to 40% when application of the abovementioned technological solutions, silicon content in hot metal to 0.01% and very stable heat conditions of a blast furnace. The actuality of titanium and its pigmental dioxide production increase was noted. Possibilities of development of Medvedevskoje and Kopanskoje deposits of high-titaniferous ores in Chelyabinsk region with extraction not only iron and vanadium but also titanium considered.

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Makeyev, A. B. "The content of natural radionuclides Ra226, Th232, K40 in titanium ores and host rocks of the Pizhemskoye deposit." Proceedings of higher educational establishments. Geology and Exploration, no. 2 (October 17, 2022): 39–46. http://dx.doi.org/10.32454/0016-7762-2022-64-2-39-46.

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Background. The value of natural radionuclide content in ores is a fundamental characteristic of any ore deposit, determining the possibility of studying, developing and enriching these ores, as well as manufacturing commercial products on their basis.Aim. To evaluate the content of natural radionuclides in the rocks and ores of the Pizhem titanium deposit and to determine their mineral concentrators.Materials and methods. A study of 15 core samples from wells within the Pizhem titanium deposit was carried out in the laboratories of IGEM RAS and VIMS using an “Ortec-65195-P/DSPecPlus” semiconductor gamma spectrometer.Results. For the first time, a radiation safety assessment was carried out and the concentration of Ra226, Th232 and K40 natural radionuclides in the titanium ores and host rocks of the Pizhemskoye deposit (the Middle Timan) was determined. The mineral concentrators for Ra226, Th232 and K40 were found to be zircon, monazite (kularite) and hydromuscovite-illite, respectively. The lowest content of radionuclides was established for quartz (D2pz) and quartz-kaolinite (PR3mr3) sandstones of glass quality. The titanium ores of the deposit belong to the I class of mineral raw materials (Aeff < 0.74 kBq/kg), thereby being completely harmless to humans.Conclusion. The low content of radionuclides in the studied ores allows them to be safely enriched, and the overburden sandstones of glass quality to be used without restrictions.

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Kansaard, Thanaphon, Weerachon Phoohinkong, Wanichaya Mekprasart, Samanya Sanguanpak, Anucha Wannagon, and Wisanu Pecharapa. "Comparison Study of Photocatalytic Activity of Titanium-Rich Materials Derived from Natural Minerals Ores Using Acidic Leaching." Key Engineering Materials 751 (August 2017): 813–18. http://dx.doi.org/10.4028/www.scientific.net/kem.751.813.

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Over past decades, titanium dioxide-based materials have been recognized as effectively practical photocatalysts for purification of toxicity waste. However, pure TiO2 photocatalyst is highly active under ultraviolet illumination. In this work, the effort has been focused on the synthesis of titanium-rich materials starting from minerals ores ilmenite ores and leucoxene ores by ball-milling process in combined with hydrochloric acid leaching method with optimized conditions. Crystallinity and morphologies of as-prepared samples were characterized by X-rays diffraction technique and scanning electron microscope. The photocatalytic activities of both derived-materials were studied and compared by degradation of Rhodamine B organic dye as organic toxicity compound under ultraviolet light and visible light. The results illustrate that the leucoxene-derived sample exhibits superior catalytic performance to the sample derived from ilmenite ores due to the greater Ti-content of the starting leucoxene ores.

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Dmitriev, Andrey N., R. V. Petukhov, G. Yu Vitkina, and E. A. Vyaznikova. "Reduction Roasting of Titaniferous Ores." Defect and Diffusion Forum 391 (February 2019): 215–20. http://dx.doi.org/10.4028/www.scientific.net/ddf.391.215.

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Questions regarding the oxidizing roasting of raw iron ore materials (agglomerate and pellets) are studied. Features of the phase structure of raw iron ore materials containing titanium and vanadium are discussed. Reducibility, durability, and temperatures of the softening and melting of metallurgical raw iron ore materials are studied in vitro. Object of research – titaniferous ores with various titanium dioxide content. The behavior of agglomerate and pellets in a blast furnace are studied, as well as the influence of their physical and chemical properties on heat and mass transfer processes using a mathematical model of the blast furnace process [1].

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Islamov, B. F., A. I. Rustamov, V. D. Tsoi, and S. S. Sayitov. "Promising scandium content of Tebinbulak titanium-magnetite deposit." Vestnik of Geosciences 3 (2021): 21–26. http://dx.doi.org/10.19110/geov.2021.3.3.

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We present results of geological-mineralogical-geochemical studies of the Tebinbulak scandium-containing titanium-magnetite deposit in Western Uzbekistan. The levels of scandium content in ores and rocks of the pyroxene-hornblende massif have been analyzed. The potential for the associated extraction of scandium from ores, which can significantly increase the profitability of the industrial development of the deposit, is discussed.

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Makeyev, A. B. "The Pizhemskoye titanium deposit is a new object of the nearest development in the Arctic zone of Russia." Arctic: Ecology and Economy 11, no. 4 (December 2021): 541–56. http://dx.doi.org/10.25283/2223-4594-2021-4-541-556.

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The Pizhemskoye titanium deposit (Middle Timan) has become one of the most attractive deposits for the industrial development in Russia as a result of the successful protection and approval of reserves at the State Reserves Committee (November 2020). 60 years have passed since the first finds of titanium mineralization in the basin of the Pechora Pizhma and Umba rivers by the thematic teams of the Ukhta Geological Exploration Department and the Komi branch of the Academy of Sciences, and now the deposit is considered one of the largest in Russia and the World. Together with the Yarega oil-titanium deposit, they contain up to 80% of the reserves and predicted resources of titanium in Russia. Timan becomes the largest raw material base of titanium in the world, the intensive development of which is possible for several hundred years. The article highlights the geological structure of the Pizhemskoye deposit (revealed a cellular, bowl-like structure of ore bodies); material and complex polymineral composition of ores; the Neoproterozoic age. The author proves the hydrothermal-metamorphogenic genesis of the ores, considers the sources of the mineral matter and solution of the technological scheme for processing refractory ores. The Pizhemskoye deposit is classified as a new pseudorutile-leucoxene-quartz subtype of primary metamorphogenic deposits.

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Georgievskiy, A. F., and V. M. Bugina. "Phosphorites and Glauconites as Additional Reserves in the Development of Titanium-Zirconium Sands of the Centralnoye Deposit (Tambov Region of Russia)." IOP Conference Series: Earth and Environmental Science 988, no. 2 (February 1, 2022): 022031. http://dx.doi.org/10.1088/1755-1315/988/2/022031.

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Abstract After the Soviet Union demise, Russia was plagued by severe titanium resource problems. The bulk of titanium concentrates is imported from Ukraine. But Russia has its own titanium resources not lesser than in leading countries of the world (China, Brazil, South Africa). Ores form both primary and alluvial deposits, including those located in economically developed regions. The better example is the ancient marine placer of the Centralnoye deposit in the Rasskazovsky district of the Tambov region. In addition to ilmenite, rutile and zircon, ore sands also include phosphates and glauconite. The deposit was discovered in the middle of the last century and, after geological prospecting, was classified as one of the ten largest world objects of placer titanium ores. Despite this, for many years the Centralnoye deposit remained abandoned, since by that time, in the Soviet Union in Ukraine, several mining plants were already operating, which satisfied the industry’s demand for titanium. Today Russia is in dire need of titanium raw materials and the question of the need to develop the deposit has been repeatedly raised. This topic is being discussed especially actively today since a decision has been made on the expediency of its development. However, in the modern market environment, the implementation of this decision is an extremely difficult task. Here, the factors that can reduce operating costs that can improve the economic performance of mining and processing of ore sands become important. These factors include mining and use of both phosphorites and glauconites contained in titanium-zirconium ores and in the “overburden” rocks. The article describes the technogenic waste (tailings) of titanium - zirconium ores. Their material, mineral and granulometric composition is considered, and the technological properties of phosphorites and glauconites are described in the article. On the basis of experimental data, it has been shown that the accumulated concentrates represent high-quality raw materials for the production of phosphate rock and effective phosphorus and potassium ameliorants.

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Dmitriev, A. N., G. Yu Vit’kina, R. V. Petukhov, S. A. Petrova, and Yu A. Chesnokov. "Estimation of indices of BF heat of titanium-magnetite concentrates with different titanium dioxide content." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 2 (March 10, 2019): 154–65. http://dx.doi.org/10.32339/0135-5910-2019-2-154-165.

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Russia owns world largest reserves of titanium- magnetite and ilmenite- titanium- magnetite ores. Following the stepby-step inclusion into metallurgical processing of titanium- magnetite raw materials, the matter of maximum extraction of iron, vanadium and titanium becomes more and more actual. Kachkanar group of deposits of titanium- magnetite ores consists of two deposits: Gusevgoskoe and Sobstvenno-Kachkanar. At present JSC EVRAZ NTMK uses titanium- magnetite sinter and pellets, produced of Gusevgorskoe deposit ores. To make up the dropped out capacities and to keep the volume of mined ore at the level of 55 m t/year, it is planned to put into operation the reserved Sobstvenno-Kachkanar deposit. To process the titanium- magnetite ores of this deposit, their specific peculiarities should be taken into consideration. In particular, the increased TiO2content in iron ore concentrate up to 3.4% might require corrections of the BF technology. In this connection a study of metallurgical properties of lump iron ore raw materials with different titanium dioxide content was carried out. To clarify the pellets phase components a method of X-ray-phase analysis was used. The studies were done at CKP “Ural-M” equipment in the Institute of Metallurgy, Ural branch of Russian academy of Sciences. It was determined that pellets chemistry was represented by hematite (from 77 up to 89%), magnetite (from 2.84 up to 10.44%), complicated diopside (from 2 up to 10%), as well as in a small amount by quartz, hedenbergite, corundum, rutile, ferro-periclase, ilmenite, wollastonite, α-Fe, wustite. Results of viscosity calculation of obtained slags showed that it is within a range, typical for real BF slags viscosity. The obtained values of slag viscosity do not offer problems with slag regime of BF heat. It was shown, that increase of titanium dioxide content in pellets does not give rise to quality deterioration of iron ore raw materials preparation to BF heat as volume of introduced concentrate with increase TiO2content into the materials is increasing. Increase of hot strength and pellets temperature of beginning of softening, the pellets having increased titanium dioxide content, will positively affect main technical and economic indices of BF heat – coke rate and productivity, that was confirmed by BF indices calculation by application of balance logical and statistical model of BF process.

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Ponaryadov, A., O. Kotova, S. Sun, E. Kurovics, J. E. F. M. Ibrahim, and L. A. Gömze. "Comparative study of stages of titanium minerals formation in nature and experiment for “smart” materials industry." Journal of Physics: Conference Series 2315, no. 1 (July 1, 2022): 012009. http://dx.doi.org/10.1088/1742-6596/2315/1/012009.

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Abstract The economic importance of titanium oxides and hydroxides results in the active development of titanium deposits. Considering world trends in the development of titanium ores and taking into account their mineralogical features, a comparative study of stages of titanium minerals formation in nature (mineralogenesis) and their transformations in technological processing or synthesis (technogenesis) under hydrothermal conditions at the macrolevel (textural), micro-level (structural) and nanoscale (heterogeneity of individuals and microaggregates, including the synthesis of nanostructures) was made. The natural mechanism of mineral formation of titanium ores in the geological system (titanium ore – hydrothermal conditions) have been successfully used to simulate the synthesis of titanium nanotubes: a trigger for the redeposition of ore matter with the formation of new mineral phases and restructuring at the macro-, micro- and nanoscale is the energy of the geological system/its model, which is sufficient to create conditions for inhomogeneiting (destabilizing) the initial structure of titanium minerals due to external influences (P, T, pH). The relationship between the stages of mineral formation processes in nature and experiment as a promising strategy for the “smart” materials industry was discussed.

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Dehghan-Manshadi, Ali, James Manuel, Sarath Hapugoda, and Natalie Ware. "Sintering Characteristics of Titanium Containing Iron Ores." ISIJ International 54, no. 10 (2014): 2189–95. http://dx.doi.org/10.2355/isijinternational.54.2189.

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Baranowski, Ryszard, Zbigniew Gregorowicz, and Celina Pieszko. "Analysis of vanadium—titanium ores and alloys." Talanta 41, no. 7 (July 1994): 1161–64. http://dx.doi.org/10.1016/0039-9140(94)80087-1.

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Marchevskaya, V. V., and U. V. Korneeva. "Correlation between the material constitution components in apatite-nepheline ores of the Khybiny Rock Massif (the Kola Peninsula)." Vestnik MGTU 23, no. 2 (June 30, 2020): 173–81. http://dx.doi.org/10.21443/1560-9278-2020-23-2-173-181.

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Raw apatite-nepheline ores of the Khibiny alkaline massif are similar in terms of the set of ore-forming minerals and differ in their quantitative ratio. A special place among apatite-nepheline ores is occupied by ores of tectonically destroyed zones, which are widespread in the Khibiny apatite-nepheline deposits. Destruction zone ores are product of secondary changes in raw ores and are characterized by the presence of finely dispersed secondary minerals represented by hydrated micas, zeolites and clay minerals. In the aquatic environment they form colloidal sediments with active surface properties. This fact, as well as thin films of clay and other minerals formed on the surface of apatite grains, cause a decrease in the degree of hydrophobicity of fluorapatite and deterioration of the selectivity of apatite flotation. According to the analytical determinations of the chemical components of the ores and their mineralogical composition, a correlation-regression analysis of the ratio of the components of the material composition of the ores has been performed. The results of correlation-regression analysis have shown that the presence of hypergenically changed ores related to difficult-to-treat ones can be identified by lower ratios of sodium and potassium oxides, as well as sodium and aluminum relative to their average. The presence of products of nepheline change in all ores processed has allowed revealing the most stable correlation between nepheline and sodium oxide, rather than aluminum oxides, in contrast to the earlier opinion. The very high correlation relationship between fluorapatite, nepheline, and titanite and the oxides of phosphorus, sodium, and titanium, respectively, and the statistical significance of the correlation and regression coefficients allow determining the content of these minerals using the regression equations presented in the paper.

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Kustov, A. D., T. A. Kenova, R. A. Zakirov, and O. G. Parfenov. "Integrated processing of difficultly dressed titanium-containing ores." Russian Journal of Applied Chemistry 90, no. 8 (August 2017): 1208–13. http://dx.doi.org/10.1134/s107042721708002x.

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Smirnov, K. I., and P. A. Gamov. "Pyro-Metallurgical Processing of Ilmenite Concentrate with Production of Iron and Titanium Oxides." Solid State Phenomena 316 (April 2021): 385–89. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.385.

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The main problem of processing of ores with a high content of titanium oxides is refractory slag based on TiO2, which makes it difficult to melt. The methods of processing of titanomagnetite and ilmenite ores were analyzed. It is shown that the existing scheme of processing does not meet the requirements of complex use of materials. The paper presents the results of laboratory studies on reduction of ilmenite concentrate and subsequent pyrometallurgical separation of reduction products without addition of flux or slag-forming materials. Solid-phase reduction of iron enabled to extract iron selectively from the ilmenite crystal lattice, not diluting the oxide phase with the reducing agent ash. Using the advantages of solid-phase reduction, the possibility of obtaining pure iron and slag with a high content of titanium oxides was shown.

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Kotova, Olga, Elena Ozhogina, and Alexey Ponaryadov. "Technological mineralogy: development of a comprehensive assessment of titanium ores (exemplified by the Pizhemskoye deposit)." Записки Горного института 256 (November 10, 2022): 632–41. http://dx.doi.org/10.31897/pmi.2022.78.

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Technological mineralogy of titanium ores is the basis for assessing their complexity. It enables, from a unified standpoint, to trace the entire course of changes in mineral matter through operating procedures, including beneficiation, processing, and obtaining target industrial products. The study targets are Pizhemskoye ilmenite-leucoxene sandstones, which are distinguished by a complex polymineral composition. Along with the main ore components, there are other metals with different speciation (isomorphic admixture, independent mineral phases). The optimal set of mineralogical analysis methods for the predictive assessment of their further use is substantiated exemplified by titanium ores of the Pizhemskoye deposit, which are complex, noted for a variable content of iron oxides and contain rare earth metals. Examinations by X-ray phase analysis and scanning electron microscopy confirm that the main titanium phases of sandstones are pseudorutile and a polymineral aggregate, “leucoxene”. Considering the granulometric peculiarities of the magnetic and non-magnetic fractions of the gravity concentrate, the prospects of technologies for processing titanium raw materials are discussed. Along with the problems of obtaining high-quality raw materials, the transformations of mineral phases as a result of extreme impacts and their physicochemical properties as a consequence of isomorphic substitution of a part of Ti atoms with natural modifier agents (Fe and V) in the synthesis of titanium oxide nanostructures for industrial applications are considered (photocatalytic nanoreactor).

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Molchanov, Vladimir. "Extraction of useful components from ilmenite-titanomagnetite ores of Sikhote-Alin (Russia)." E3S Web of Conferences 431 (2023): 03010. http://dx.doi.org/10.1051/e3sconf/202343103010.

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In the south of the Far East of Russia, a new source of critically important metals (titanium and iron) has been discovered - ilmenite-titanomagnetite ores of mafic-ultrabasic rocks of the Sikhote-Alin orogenic belt. On the example of one of these massifs, Kokshaarovsky, the possibilities of decomposition of mineral raw materials are conducted with using hydrometallurgy methods are considere. The opening of the studied mineral raw materials was carried out by means of using ammonium hydrofluoride NH4HF2 and ammonium sulfate (NH4)2SO4 with subsequent complete transfer of useful components into solution. It has been established that the use of a mixture of these reagents makes it possible to more fully open titanium-containing rocks. The experience of deep processing of ilmenite-titanomagnetite ores will allow outlining the ways for the industrial development of complex deposits of the Far East.

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Geldenhuys, I. J., Q. G. Reynolds, and G. Akdogan. "Evaluation of Titania-Rich Slag Produced from Titaniferous Magnetite Under Fluxless Smelting Conditions." JOM 72, no. 10 (August 3, 2020): 3462–71. http://dx.doi.org/10.1007/s11837-020-04304-3.

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Abstract Titanium-bearing magnetite ore is generically defined as magnetite with > 1% titanium dioxide (TiO2) and is usually vanadium-bearing. The iron and titanium occur as a mixture of magnetite (Fe3O4) and ilmenite (FeTiO3) with vanadium oxide usually occurring within the solid solution of the titanium-bearing magnetite phase. These ores are currently widely processed in blast furnaces via modified ironmaking processes. Typically, vanadium is recovered as a by-product from the ironmaking process, while the diluted titania slag is stockpiled. Fluxless smelting in a direct-current open-arc furnace is proposed as an opportunity to improve iron and vanadium recovery and potentially unlock the titanium as a slag product. Slags produced from a pilot study are compared to industrial slags produced from ilmenite. The findings from the pilot test show that slag produced under fluxless smelting conditions in an open-arc electric furnace is remarkably similar to industrial ilmenite slags. The test conditions were varied to evaluate the slag and metal composition, and furnace operation, under increasing reducing conditions. The study showed that the slag and metal product was remarkably similar to industrial slag produced from ilmenite.

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O’Connor, Cyril, and Tatiana Alexandrova. "The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (PGMs) in South Africa and Russia." Minerals 11, no. 1 (January 7, 2021): 54. http://dx.doi.org/10.3390/min11010054.

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Russia and South Africa are the world’s leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by flotation of the platinum group minerals (PGMs) found in each country. A summary of some of the major challenges faced in each country in terms of the concentration of the ores by flotation is presented alongside the opportunities that exist to increase the production of the respective metals. These include the more efficient recovery of minerals such as arsenides and tellurides, the management of siliceous gangue and chromite in the processing of these ores, and, especially in Russia, the development of novel processing routes to recover PGEs from relatively low grade ores occurring in dunites, black shale ores and in vanadium-iron-titanium-sulphide oxide formations.

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O’Connor, Cyril, and Tatiana Alexandrova. "The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (PGMs) in South Africa and Russia." Minerals 11, no. 1 (January 7, 2021): 54. http://dx.doi.org/10.3390/min11010054.

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Russia and South Africa are the world’s leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by flotation of the platinum group minerals (PGMs) found in each country. A summary of some of the major challenges faced in each country in terms of the concentration of the ores by flotation is presented alongside the opportunities that exist to increase the production of the respective metals. These include the more efficient recovery of minerals such as arsenides and tellurides, the management of siliceous gangue and chromite in the processing of these ores, and, especially in Russia, the development of novel processing routes to recover PGEs from relatively low grade ores occurring in dunites, black shale ores and in vanadium-iron-titanium-sulphide oxide formations.

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Chaves, Arthur Pinto, Mauricio Bergerman, Claret Antonio Vidal Abreu, and Nilson Bigogno. "Concentration of bauxite fines via gravity concentration." Rem: Revista Escola de Minas 62, no. 3 (September 2009): 277–81. http://dx.doi.org/10.1590/s0370-44672009000300004.

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Companhia Brasileira de Alumínio (CBA) has a preparation plant at Itamarati de Minas, MG. This plant washes two different kinds of bauxite ore, one originating from the laterization of gnaisses and another from amphybolites. Both ores have the same behavior in the coarser size fractions but behave differently under 0.355 mm (42# Tyler). In these small sizes, gneissic ores are rich in quartz and amphybolitic ores are rich in iron and titanium bearing ores. The unit operations are: scrubbing of the feed in drum scrubbers, desliming in cyclones, and screening of the scrubbed bauxite in high frequency screens (0.355 mm) - the +0.355 mm product is a final concentrate. The -0.355 mm fraction is desliming in two stage cyclones and goes to a fines gravity concentration circuit of Reichert spirals complemented by magnetic separation of the light product from the spirals. The research work, including mineralogy, process development, batch tests and pilot plant tests, is described and compared to the actual results in the industrial circuit.

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Ganzha, O., H. Kuzmanenko, T. Okholina, and O. Remezova. "CURRENT STATE OF MINERAL BASE OF TITANIUM DEPOSITS OF UKRAINE." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 4 (99) (2022): 60–66. http://dx.doi.org/10.17721/1728-2713.99.08.

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The current state of titanium deposits in the world and Ukraine's place in the world of titanium ore reserves are analyzed. The list of leading countries in terms of reserves of loose titanium-zirconium ores and the dynamics of production is given. There is no regularity of the ratio of countries in terms of reserves and countries in terms of production. A map of the countries to which Ukraine exports titanium raw materials and the dynamics of titanium dioxide prices over the past 5 years are presented. The list of available mining enterprises for enrichment and production of titanium products within Ukraine is given. The general characteristic of the mineral resource base of titanium of Ukraine with the map of the current state of ilmenite and complex zircon-ilmenite placers of the Ukrainian Placer Province is provided.

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Tran, Hieu Quang, Nam Xuan Bui, Hoang Nguyen, Tuan Anh Nguyen, and Long Quoc Nguyen. "Applicable posssibility of advanced technologies and equipment in surface mines of Vietnam." Journal of Mining and Earth Sciences 61, no. 5 (October 10, 2020): 16–32. http://dx.doi.org/10.46326/jmes.ktlt2020.02.

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Vietnam has abundant and diversified mineral resources with more than 5, 000 mines of 60 discovered and exploited minerals. Besides of surface coal mines mainly located in Quang Ninh, the types of minerals being exploited by surface mining method consist of metal ores (iron, titanium, manganese, gold, zinc, copper, antimony) and non - metallic ores, and construction materials (stone, sand, gravel, etc.). In the paper, authors researched and proposed the advanced technologies and equipment based on Industry 4.0, that can apply effectively for surface mines in Vietnam in order to ensure safety and enhance surface mining effect.

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Dutsun, A. M., J. U. Odo, A. U. Emene, R. A. Muriana, and J. Jiya. "Chemical and mineralogical properties of Lejja Nsukka iron ore deposits." Nigerian Journal of Technology 42, no. 3 (November 3, 2023): 347–52. http://dx.doi.org/10.4314/njt.v42i3.7.

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The ore deposits obtained from Dunoka, Amankwo and Umuakpo in Lejja Nsukka were found to be iron silicate in nature. They were analysedby XRD, XRF, AAS and the ores were found to contain 60.59% Fe, 64.81%Fe and 64.67%Fe respectively. These ores when compared to those iron ore producing nations, they were classified as medium-grade iron ore. Other elements like titanium, magnesium and manganese were present and could be mined for commercial use. Chemical analysis of the ore samples showed that traces of phosphorous of ≤ 0.0079% and were free from the deleterious elements, sulphur and arsenic.

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Medyanik, N., A. Smirnova, L. Kolyada, and Yu Bessonova. "STUDY OF POSSIBILITY OF VANADIUM AND TITANIUM CHEMICAL EXTRACTION FROM TITANOMAGNETITE ORE IRON CONCENTRATE." TRANSBAIKAL STATE UNIVERSITY JOURNAL 28, no. 7 (2022): 44–51. http://dx.doi.org/10.21209/2227-9245-2022-28-7-44-51.

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The metallurgical industry is experiencing certain difficulties in the raw material segment of ferrous metals due to the depletion of highly liquid target iron ores reserves, the alternative of which are titanomagnetites. In addition, the demand for vanadium and titanium is increasing on the world market, the absolute part of the world stock of which also falls on titanomagnetite ore. Complex processing of titanomagnetite ores provides for production of not only iron concentrate, but also vanadium and titanium present in it. In this regard, the relevance of research lies in the need for deep complex processing of titanomagnetites and their enrichment products. The object of the study was iron concentrate of titanomagnetite ore from the Volkovsky deposit. Due to the isomorphism of vanadium with iron and the extremely thin integration of titanium into magnetite grains, the purpose of this investigate was to study the possibility of vanadium and titanium chemical extraction from titanomagnetite ore iron concentrate. The authors have analyzed the features of the chemical and mineralogical composition of iron concentrate. Granulometric, X-ray diffraction, X-ray fluorescence analyses are used in the work. The feasibility of complex processing of iron concentrate in order to extract not only iron from it, but also such valuable components as vanadium and titanium by acid leaching has been proved. It has been experimentally established that it is possible to extract vanadium into solution and concentrate titanium in the cake by acid leaching of iron concentrate. The highest percentage of vanadium extraction (68.31%) is achieved by leaching with 30% hydrochloric acid at a temperature of 92-98 °C. It has been established that titanium is not extracted into the solution, but is concentrated in the cake, however, titanium dioxide is partially dissolved when hot sulfuric acid is used. Thus, it was proved that, it is preferable to use solutions of hydrochloric acid, rather than sulfuric acid for the selective separation of titanium and vanadium, due to the dissolution of titanium dioxide in hot sulfuric acid

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König, Uwe, and Sabine M. C. Verryn. "Heavy Mineral Sands Mining and Downstream Processing: Value of Mineralogical Monitoring Using XRD." Minerals 11, no. 11 (November 11, 2021): 1253. http://dx.doi.org/10.3390/min11111253.

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Heavy mineral sands are the source of various commodities such as white titanium dioxide pigment and titanium metal. The three case studies in this paper show the value of X-ray diffraction (XRD) and statistical methods such as data clustering for process optimization and quality control during heavy mineral processing. The potential of XRD as an automatable, reliable tool, useful in the characterization of heavy mineral concentrates, product streams and titania slag is demonstrated. The recent development of ultra-high-speed X-ray detectors and automated quantification allows for ‘on the fly’ quantitative X-ray diffraction analysis and truly interactive process control, especially in the sector of heavy mineral concentration and processing. Apart from the information about the composition of a raw ore, heavy mineral concentrate and the various product streams or titania slag, this paper provides useful information by the quantitative determination of the crystalline phases and the amorphous content. The analysis of the phases can help to optimize the concentration of ores and reduction of ilmenite concentrate. Traditionally, quality control of heavy mineral concentrates and titania slag relies mainly on elemental, chemical, gravimetrical, and magnetic analysis. Since the efficiency of concentration of minerals in the different product streams and reduction depends on the content of the different minerals, and for the latter on the titanium and iron phases such as ilmenite FeTiO3, rutile TiO2, anatase TiO2, or the various titanium oxides with different oxidation stages, fast and direct analysis of the phases is required.

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Shchukina, E. S., Yu G. Kiselev, and L. G. Gerasimova. "Production of titanium silicate compositions from technogenic titanium containing waste of Khibiny ores' enrichment." Vestnik MGTU 20, no. 1/2 (March 2017): 212–18. http://dx.doi.org/10.21443/1560-9278-2017-20-1/2-212-218.

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Maldybayev, Galymzhan, Argyn Korabayev, Rustam Sharipov, Khaldun M. Al Azzam, El-Sayed Negim, Omirserik Baigenzhenov, Aliya Alimzhanova, Mrutyunjay Panigrahi, and Roza Shayakhmetova. "Processing of titanium-containing ores for the production of titanium products: A comprehensive review." Heliyon 10, no. 3 (February 2024): e24966. http://dx.doi.org/10.1016/j.heliyon.2024.e24966.

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Chiwandika, Edson K., Seong-Kyu Cho, and Sung-Mo Jung. "Phase Development in the Sintering of a Hematite–Ilmenite Ore Blend." Minerals 10, no. 9 (September 11, 2020): 800. http://dx.doi.org/10.3390/min10090800.

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The use of low-grade iron ores has attracted a lot of interest where fines from these ores are sintered to improve their strength. Ti-containing ores are one of the abundantly available iron ores of low-grade. The sintering of the hematite–ilmenite ore blends has several challenges, which include the formation of perovskite. The sintering behavior of a hematite–ilmenite ore sinter blend was investigated in 75 vol% N2, 24 vol% CO2, and 1 vol% CO in the temperature range of 1373 to 1523 K. Phase development and distribution of metallic elements were investigated by x-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and electron probe microanalysis (EPMA). The addition of ilmenite ore to hematite ore increased the temperature of melt formation. More titanium (Ti) was distributed in the glass phase with increasing temperature. Morphological change showed that the amount of sinter-bonding phase generated was low, below 1473 K. Weak sinter bonding strength might be caused by the presence of Ti in the glass phase at high temperature. This might affect the fracture toughness of the glass phase.

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Burtsev, I. N., O. B. Kotova, D. V. Kuzmin, D. O. Mashin, I. A. Perovskiy, A. V. Ponaryadov, I. N. Razmyslov, and D. A. Shushkov. "Role of technological researches in development of the mineral raw materials complex of the Timan-North Ural region." Prospect and protection of mineral resources 5 (2018): 38–47. http://dx.doi.org/10.19110/0034-026x-2018-5-38-47.

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Actual problems of a technological assessment of mineral raw materials of the Timan-North Ural region are considered. The role of scientific developments in development and effective use of mineral resources of the region is shown. Results of technological researches of coals, oil shale, bauxites, titanium ores, industrial minerals are given.

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Kornilkov, S. V., A. N. Dmitriev, and A. E. Pelevin. "Comprehensive solving tasks of deep processing of titanium-magnetite ores." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 76, no. 1 (February 7, 2020): 12–18. http://dx.doi.org/10.32339/0135-5910-2020-1-12-18.

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Despite the plants of the Ural region have significant mining capacities, they are buying raw materials from other regions, therefore the task of wastes minimization is a perspective of supporting their raw materials base. A technology was proposed to increase the quality of titanium-magnetite concentrate, comprising dividing of the ore into two technological grades – a rich and a poor ones following separate crushing and concentration of the grades at separate sections. Due to this technological scheme, the ore is divided into easy-concentrated and hard-concentrated grades at the concentration stage, but not at the stages of preparation to development, mining, transporting and crushing. The advantage of the new technology is the relative simplicity of equipment modernization, since the technological scheme of the ore processing is modified only at the concentration plant. Under laboratory conditions, an iron-vanadium concentrate with iron content of 67.1% and vanadium pentoxide of 0.6% was obtained.

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Fatollahi-Fard, Farzin, and Petrus Christiaan Pistorius. "Comparison of Methods for Electrochemical Iron Removal from Titanium Ores." Journal of Sustainable Metallurgy 3, no. 4 (May 25, 2017): 711–19. http://dx.doi.org/10.1007/s40831-017-0132-6.

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Al-Hawbani, Ali M. "Petrography and Geochemistry of the Ore-bearing Gabbro Intrusion of the Jabal Hamir-Juban Locality, SE Yemen." Thamar University Journal of Natural & Applied Sciences 7, no. 7 (January 28, 2023): 81–95. http://dx.doi.org/10.59167/tujnas.v7i7.1346.

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Juban region is located about 183 km southeast of Sana’a City. The Juban gabbroic layered intrusion is associated with Fe-Ti formation Banded iron ores are hosted in a gabbroic intrusion of Tertiary age, which is injected within Cretaceous Tawilah sandstone group. Petrographic examinations of gabbro rocks show that they are composed essentially of olivine, plagioclase feldspar and magnetite minerals. The olivine mineral is present in high percentages which lead to classify the gabbro as troctolite type. The olivine is presented by fayalite, foresterite minerals in different proportions. The feldspar is present as plagioclase minerals of bytownite and anorthite compositions. The results of chemical analysis of the major oxides present in the ore-bearing gabbro in the Jabal Hamir–Juban area show that, the iron oxide ranges from 21.05% - 49.01% with an average of 44.30%, the titanium oxide ranges from 1.86% - 7.71% with an average of 6.78%, and silica oxide has an average 23.76% . Geochemistry of the examined gabbroic rocks are economically promising deposits for some trace elements in addition to the iron and titanium ores.

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Askarova, Gulzhan, Mels Shautenov, and Kulzhamal Nogaeva. "Flotation enrichment of resistant gold ores." E3S Web of Conferences 168 (2020): 00005. http://dx.doi.org/10.1051/e3sconf/202016800005.

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Ores of the Vasilkovsky deposit include arsenopyrite, pyrite, pyrrhotite, marcasite, gold, chalcopyrite, sphalerite, galena, faded ore (tennantite)S, bismuthine, native bismuth, lellingite, molybdenite, cubanite, bornite, antimonite, relict minerals, magnetite, apatite and apatite chromite, sericite, chlorite, potassium feldspar, tourmaline), quartz, carbonates (siderite, ankerite, calcite), fluorite, barite. Arsenopyrite is the main ore mineral. It contains the bulk of gold, as well as impurities - copper, cobalt, nickel, bismuth, zirconium, titanium, lead, zinc, antimony, silver, molybdenum. Bismuth and its minerals are widespread, they are constantly associated with arsenopyrite, forming intergrowths with native gold, less often with chalcopyrite and faded ore. Native gold is distributed very unevenly, forms the finest precipitates ranging in size from tenths of a micron to 0.063 mm, grows together with quartz, arsenopyrite, pyrite and bismuth minerals. Rich ores were formed by combining bismuthcontaining associations with arsenopyrite. The role of gold in arsenopyrite increases with depth. Ores are of the gold-quartz-sulfide type. Quartz in ore up to 90 %, sulfides from 3 to 5 %. The content of harmful impurities (arsenic) reaches 2 % or more. Ores are refractory, require special technology for the beneficiation and extraction of gold.

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Gordienko, P. S., V. A. Dostovalov, and E. V. Pashnina. "Hydrofluoride Method of Complex Processing of Titanium-Containing Raw Materials." Solid State Phenomena 265 (September 2017): 542–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.542.

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The use of titanium dioxide is so diverse that varies from food to heavy industry and it is the main substance in the titanium industry. Over 90% of the world's mined titanium concentrates are processed to produce pigments. The sources for the production of titanium dioxide are the typically used titanium-containing ores including minerals rutile, ilmenite, and others. The volume of world production of titanium dioxide pigment exceeds 5 million tons per year and it is carried out in two ways: sulphate and chlorine (in approximately equal volumes). The changed approach to the green production processes requires the improvement of existing technologies and the development of new methods for processing titanium-containing raw materials. The authors have experimentally confirmed the high efficiency of complex, waste-free processing of titanium-containing raw materials developed by hydrofluoride. Creating pigment production on the basis hydrofluoride method will meet not only the domestic needs but also offer thepigment for export, as its parameters will surpass those of the best world analogues.

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Khanchuk, A. I., V. P. Molchanov, and D. V. Androsov. "THE FIRST INFORMATION ABOUT THE GOLD-COPPER MINERALIZATION OF THE KONTORSKOYE ORE OPENING (ARIADNE INTRUSION OF ULTRABASITES, PRIMORYE)." Доклады Российской академии наук. Науки о Земле 511, no. 1 (July 1, 2023): 5–11. http://dx.doi.org/10.31857/s268673972260240x.

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Within the Sikhote-Alin orogenic belt, a new promising type of mineral resources has been identified – complex ores and placers spatially and genetically related to Late Mesozoic ultramafic intrusions. An example of this is the Ariadne massif of ultramafic rocks, in the center of which there is a manifestation of gold-titanium mineralization, and in the exocontact – gold-antimony. The main features of the mineralogy and geochemistry of gold-copper formations in its near-intrusive zone are determined. To reconstruct the conditions for the formation of these ores, the isotopic composition of sulfur in sulfide minerals was studied. The obtained materials testify to the significant metal-bearing potential of the ultramafic rocks of the Sikhote-Alin.

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Сычева, Н. А., М. В. Кыджы, В. А. Рассулов, В. Е. Жукова, and Ю. Н. Шувалова. "SPECIFIC FEATURES OF MINERAL COMPOSITION OF HIGH-TITANIUM ILMENITE ORES AFFECTING THEIR ENRICHMENT." Prospect & protection of mineral resources, no. 2 (April 25, 2024): 75–81. http://dx.doi.org/10.53085/0034-026x_2024_2_75.

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В статье приведены результаты минералогического изучения высокотитанистых ильменитовых руд, проводимого в рамках поисково-оценочных работ с целью оценки их качества. Установлено, что руды, имея простой минеральный состав и благоприятные текстурно-структурные характеристики, обладают минералогическими особенностями, неблагоприятно влияющими на их обогащение гравитационными и магнитными методами. Выявлена контрастность главного рудного минерала ильменита и породообразующих минералов по электрическим свойствам, позволяющая эффективно разделять их электрическими методами. The article presents the results of a mineralogical study of high-titanium ilmenite ores as part of prospecting and evaluation in order to assess their quality. The data received testify that ores with a simple mineral composition and favorable textural and structural characteristics have mineralogical features that adversely affect their enrichment by gravitational and magnetic methods. The main ore mineral ilmenite and the rock-forming minerals have a clear contrast in electrical properties, so they may be effectively separated by electrical methods.

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Shiryaev, P. B., Yu V. Erokhin, K. S. Ivanov, V. N. Puchkov, and V. V. Khiller. "About the first discovery of titanium–containing hydroxylclinohumite in podiform chromitite." Доклады Российской академии наук. Науки о Земле 514, no. 1 (June 27, 2024): 114–21. http://dx.doi.org/10.31857/s2686739724010137.

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For the first time in podiform chromitites, a mineral of the humite group, titanium–containing hydroxylclinohumite, belonging to natural dense water-containing magnesian silicates (DHMS phases), was found. The find was made in chrome ores of the Paity plateau, located in the northern part of the Voikaro-Synyinsky ultramafic massif of the Polar Urals. Chromitites are deposited in the dunite body, which is located at the contact of apoharzburgite amphibole-olivine-antigorite and amphibole-enstatite-olivine metamorphic rocks containing relics of non-serpentinized harzburgites. According to optical data and chemical composition, the mineral belongs to titanium-containing hydroxylclinohumite, since it contains TiO2 (up to 5.64 wt.%), in the complete absence of fluoride. The presence of OH-grouping in the mineral is confirmed by the Raman spectrum, which generally corresponds to the standard of hydroxylclinohumite. The results of geothermometry show that this mineral was formed in chromitites of the Polar Urals at a temperature of 668–740º with and, probably, a pressure of 20–25 kbar. It follows from this that the formation (or recrystallization) of chromite ores occurred under high-pressure conditions, i. e. ore occurrences of chromites in the northern part of the Voikaro-Synyinsky massif were formed, apparently, in a suprasubduction environment.

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GORBATOVA, Elena Aleksandrovna. "Determination of the possibility of separation of titanomagnetite and ilmenite in the selective separation of titanomagnetite ores." NEWS of the Ural State Mining University 1, no. 1 (March 23, 2020): 140–49. http://dx.doi.org/10.21440/2307-2091-2020-1-140-149.

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Experience in the development of iron-titanium ores has shown that their successful processing is possible only with the use of complex combined processing schemes. The possibility of selective extraction of titanomagnetite and ilmenite products during magnetic (electromagnetic) separation is considered during processing of altered disseminated titanomagnetite ores of the Medvedevsky deposit. Purpose of the research is to determine the possibility of separation of microaggregates of titanomagnetite and ilmenite during selective magnetic (electromagnetic) separation of disseminated titanomagnetite ores. Materials and methods. Classification of crushed material with its subsequent separation by magnetic (electromagnetic) properties. Analysis of the distribution of iron and titanium dioxide and the identification of the nature of the disclosure of ore and non-metallic minerals from the standpoint of technological mineralogy. Results. Products of classified ore after magnetic (electromagnetic) separation are characterized by uneven distribution. Most of the material (45,01%) is concentrated in fractions separated at a magnetic field with strength of more than 250 mT. The yield of magnetic fraction is 2,89%. A high content of Femagnetic is characteristically for the products of magnetic separation of titanomagnetite ore obtained at the magnetic field with strength of 10 mT. Generally, titanium dioxide is concentrated in the products of electromagnetic separation separated at a magnetic field with strength of 140 mT. Studies have established that the products obtained at H = 10 mT consist of 37% titanomagnetite aggregates of varying degrees of martitization. With increasing of magnetic field strength, the number of titanomagnetite grains decreases and the content of ilmenite grains increases in the products of electromagnetic separation. In this case at H = 140 mT, free grains (55%) are mainly consist of ilmenite. Conclusions. Analysis of the magnetic separation products showed that with a magnetic field strength of 10 mT it is possible to obtain a product with mainly titanomagnetite composition, and it is possible to obtain a product with mainly ilmenite composition with a magnetic field strength of 140 mT.

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Dmitriev, Andrey N., R. V. Petukhov, G. Yu Vitkina, Alexey V. Dolmatov, and L. A. Ovchinnikova. "Change in Oxidizing and Reduction Roasting of Complex Iron-Titanium Ores." Defect and Diffusion Forum 380 (November 2017): 181–85. http://dx.doi.org/10.4028/www.scientific.net/ddf.380.181.

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The questions of oxidizing roasting of iron ore raw materials with production sinter and pellets are considered. The question of reduction roasting of iron ore raw materials is studied. Phase transformations of oxidizing and regenerative roasting are considered. Features of phase transformations of iron ore raw materials containing titanium are discussed. The reducibility, durability and temperatures of softening and melting of metallurgical iron ore raw materials are studied In Vitro. The effect of the durability of burned iron ore pellets on compression is also defined.

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Mathur, Ryan, Christopher Emproto, Adam C. Simon, Linda Godfrey, Charles Knaack, and Jeffery D. Vervoort. "A Chemical Separation and Measuring Technique for Titanium Isotopes for Titanium Ores and Iron-Rich Minerals." Minerals 12, no. 5 (May 20, 2022): 644. http://dx.doi.org/10.3390/min12050644.

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Ti-isotope fractionation on the most Ti-rich minerals on Earth has not been reported. Therefore, we present a chemical preparation and separation technique for Ti-rich minerals for mineralogic, petrologic, and economic geologic studies. A two-stage ion-exchange column procedure modified from the previous literature is used in the current study to separate Ti from Fe-rich samples, while α-TiO2 does not require chemical separation. Purified solutions in conjunction with solution standards were measured on two different instruments with dry plasma and medium-resolution mode providing mass-dependent results with the lowest errors. 49/47TiOL-Ti for the solution and solids analyzed here demonstrate a range of >5 far greater than the whole procedural 1 error of 0.10 for a synthetic compound and 0.07 for the mineral magnetite; thus, the procedure produces results is resolvable within the current range of measured Ti-isotope fractionation in these minerals.

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Zou, Xingli, Shangshu Li, Xionggang Lu, Qian Xu, Chaoyi Chen, Shuqiang Guo, and Zhongfu Zhou. "Direct Extraction of Titanium Alloys/Composites from Titanium Compounds Ores in Molten CaCl₂." MATERIALS TRANSACTIONS 58, no. 3 (2017): 331–40. http://dx.doi.org/10.2320/matertrans.mk201603.

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46

El-Desoky, Hatem M., Ahmed M. Abdel-Rahman, Wael Fahmy, Ibrahim Khalifa, Salah A. Mohamed, Aref Shirazi, Ardeshir Hezarkhani, Adel Shirazy, and Amin Beiranvand Pour. "Ore Genesis of the Abu Ghalaga Ferro-Ilmenite Ore Associated with Neoproterozoic Massive-Type Gabbros, South-Eastern Desert of Egypt: Evidence from Texture and Mineral Chemistry." Minerals 13, no. 3 (February 22, 2023): 307. http://dx.doi.org/10.3390/min13030307.

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Massif-type mafic intrusions (gabbro and anorthosite) are known for their considerable resources of vanadium-bearing iron–titanium oxide ores. Massive-type gabbroic and anorthosite rocks are frequently associated with magmatic rocks that have significant quantities of iron, titanium, and vanadium. The most promising intrusions that host Fe-Ti oxide ores are the gabbroic rocks in the south-eastern desert. The ilmenite ore deposits are hosted in arc gabbroic and anorthosite rocks. They are classified into three types, namely black ore, red ore, and disseminated ore. The black ilmenite ore is located at the deeper level, while the oxidized red ore is mainly located at or near the surface. Petrographically, the gabbro and ilmenite ores indicate a crystallization sequence of plagioclase, titaniferous pyroxene, and ilmenite. This reveals that the ilmenite is a magmatic deposit formed by the liquid gravity concentration of ilmenite following the crystallization of feldspar and pyroxene. Meanwhile, quartz, tremolite, zoisite, and opaque minerals are accessory minerals. The Fe-Ti ores are composed of ilmenite hosting exsolved hematite lamellae of variable sizes and shapes, gangue silicate minerals, and some sulfides. The X-ray diffraction (XRD) data reveal the presence of two mineral phases: ilmenite and hematite formed by the unmixing of the ferroilmenite homogeneous phase upon cooling. As a result, the ore is mostly made up of hemo-ilmenite. Using an electron microscope (SEM), as well as by observing the textures seen by the ore microscope, ilmenite is the dominant Fe-Ti oxide and contains voluminous hematite exsolved crystals. Under the scanning electron microscope, ilmenite contained intergrowths of hematite as a thin sandwich and lens shape. The formation of hematite lamellae indicates an oxidation process. Mineral chemistry-based investigations reveal late/post-magmatic activity at high temperatures. The examined ilmenite plots on the ferro-ilmenite line were created by continuous solid solution over 800 °C, whereas the analyzed magnetite and Ti-magnetite plot near the magnetite line and were formed by continuous solid solution exceeding 600 °C.

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Celik, M. S., I. Can, and R. H. Eren. "Removal of titanium impurities from feldspar ores by new flotation collectors." Minerals Engineering 11, no. 12 (December 1998): 1201–8. http://dx.doi.org/10.1016/s0892-6875(98)00106-x.

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Brubaker, W. W., R. M. Martin, M. H. Headinger, T. Segers, and A. Wall. "F45 Quantitative Analysis of Titanium-Rich Ores by X-ray Fluorescence." Powder Diffraction 20, no. 2 (June 2005): 181. http://dx.doi.org/10.1154/1.1968316.

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Molchanov, V. P. "Mineralogy and Geochemistry of Metal-Bearing Formations Associated with the Sikhote-Alin Ultrabasites (Primorye)." IOP Conference Series: Earth and Environmental Science 988, no. 2 (February 1, 2022): 022033. http://dx.doi.org/10.1088/1755-1315/988/2/022033.

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Abstract A new promising type of multimetal ores and placers, spatially and genetically associated with the intrusion of the ultrabasites of the Sikhote-Alin orogenic belt has been discovered. The features of mineralogy and geochemistry of ore-placer occurrences of gold-ilmenite and gold-antimonite ores belonging to the Ariadnoye massif of ultrabasic rocks have been studied. The composition of the major industrial (economic) minerals has been revealed, the complex of associated high-technology metals being determined. The obtained data confirm the participation of these ore bodies (motherlodes) in the formation of the placers. The occurrences of titanium mineralization were the suppliers of ilmenite, platinum, copper and mercury gold, as well as of associated strategic metals. The antimonite-quartz veins were another power supply source for the placers.

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BUZMAKOV, Vasiliy Nikolaevich, and Yuliya Vasil’evna VOLODINA. "Estimation of influence of the mineral composition of ore bodies of titanomagnetites of the Gusevogorskoye deposit on the concentration of vanadium in the products of their processing." NEWS of the Ural State Mining University 59, no. 3 (September 15, 2020): 62–68. http://dx.doi.org/10.21440/2307-2091-2020-3-62-68.

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Purpose of the work: to study the possibilities of increasing the extraction of vanadium pentoxide and reducing titanium dioxide into concentrate at EVRAZ KGOK. However, vanadium pentoxide and titanium dioxide are closely interconnected due to the complex mineral composition of the ores, which, in turn, is due to the genesis of the deposit. As a consequence, a decrease in the titanium content causes a decrease in the vanadium content. Relevance. EVRAZ KGOK develops the Kachkanar group of titanomagnetite iron ore deposits containing vanadium impurities, which make it possible to smelt high-strength alloyed steels. Impurities of titanium negatively affect the subsequent blast-furnace conversion and increase the cost of the smelting process. Methodology. To determine the extraction of vanadium pentoxide into the concentrate, magnetic analysis on a Davis tube, sieve analysis of the fineness of grind and statistical processing of the data were used. Results. The deposit is being developed in four ore bodies with different mineral and petrographic composition and, accordingly, different enrichment results. During the concentration conversion, part of the vanadium is lost in the tailings of enrichment. To ensure the planned content of vanadium in the concentrate, the ratio “proportion of vanadium pentoxide / proportion of iron in the original ore” should be at least 0.0077 (in each batch). Conclusions. To ensure the proportion of vanadium in the products of concentrate processing, it is necessary to control the process of shipping ores using information on the proportion of vanadium that can be recovered. Control should be carried out according to the indicator “the ratio of the proportion of vanadium and the proportion of iron in the original ore.” Corrective actions should be taken by changing the proportion of ore shipped from various ore bodies.

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Journal articles on the topic 'Titanium ores'

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