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Academic literature on the topic 'Titanium ores'

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Published: 4 June 2021
Last updated: 26 July 2024

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Journal articles on the topic "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 Ra<sup>226</sup>, Th<sup>232</sup>, K<sup>40</sup> 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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Dissertations / Theses on the topic "Titanium ores"

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Ziemski, Marcin. "Modelling HTR separation /." St. Lucia, Qld, 2002. http://adt.library.uq.edu.au/public/adt-QU20030902.124611/index.html.

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Fredette, Julie. "Pétrographie, géochimie et potentiel économique en Fe-Ti-P du secteur du Lac à Paul, partie nord de la suite anorthositique de Lac-Saint-Jean, province de Grenville, Québec /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2006. http://theses.uqac.ca.

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Thèse (M.Sc.T.) -- Université du Québec à Chicoutimi, 2006.
La p. de t. porte en outre: Mémoire présenté à l'Université du Québec à Chicoutimi comme exigence partielle de la maîtrise en sciences de la terre. CaQCU Bibliogr.: f. 274-294. Document électronique également accessible en format PDF. CaQCU
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Longbottom, Raymond James Materials Science &amp Engineering Faculty of Science UNSW. "The formation of cementite from hematite and titanomagnetite iron ore and its stability." Awarded by:University of New South Wales. Materials Science and Engineering, 2005. http://handle.unsw.edu.au/1959.4/22023.

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This project examined the reduction and formation of cementite from hematite and titanomagnetite ores and cementite stability. The aim of the project was to develop further understanding of cementite stability under conditions relevant to direct ironmaking and the mechanism of cementite decomposition. The reduction of hematite and ironsand by hydrogen-methane-argon gas mixtures was investigated from 600??C to 1100??C. Iron oxides were reduced by hydrogen to metallic iron, which was carburised by methane to form cementite. The hematite ore was reduced more quickly than the ironsand. Preoxidation of the ironsand accelerated its reduction. Hematite was converted to cementite faster than preoxidised ironsand. The decomposition of cementite formed from hematite was investigated from 500??C to 900??C. This cementite was most stable at temperatures 750-770??C. The decomposition rate increased with decreasing temperature between 750??C and 600??C and with increasing temperature above 770??C. The stability of cementite formed from pre-oxidised titanomagnetite was studied from 300??C to 1100??C. This cementite was most stable in the temperature range 700-900??C. The rate of decomposition of cementite increased with decreasing temperature between 700??C and 400??C and with increasing temperature above 900??C. Cementite formed from ironsand was more stable than cementite formed from hematite
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Howarth, Geoffrey Hamilton. "Petrogenesis and metallogenesis of the Panzhihua Fe-Ti oxide ore-bearing mafic layered intrusion, SW China." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001810.

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The Panzhihua intrusion is one of several large Fe-Ti oxide ore bearing intrusions related to the major flood volcanism of the Emeishan Large Igneous Province (ELIP), SW China. The Panzhihua intrusion in particular has recently become the focus of numerous studies owing to the excellent exposure in large open pit mining operations. The formation of Fe-Ti oxide ore layers has been the focus of these studies and has become a somewhat controversial topic with three separate models currently proposed for ore formation. The gabbroic Panzhihua intrusion extends for ± 19 km along strike, has a maximum thickness of 3000 m and hosts extensive (up to 60 m thick) Fe-Ti oxide ore layers in the lower portions of the intrusion. The intrusion has been divided into five zones: marginal zone (MGZ), lower zone (LZ), middle zone A (MZa), middle zone b (MZb) and the upper zone (UZ). The gabbroic rocks are comprised of plagioclase, clinopyroxene and interstitial Fe-Ti oxides with minor olivine. Apatite is present within the MZb only and shows no correlation with Fe-Ti oxide ore layers. Fe-Ti oxides are present throughout the stratigraphy of the intrusion. This is unlike typical layered intrusions where significant Fe-enrichment through fractionation of Fe-poor silicate phases (i.e. plagioclase) is required before Fe-Ti oxide saturation. There are no oxide-free cumulate rocks at the Panzhihua intrusion, implying either an evolved parent magma or very high Fe content of the source rocks. I present here new mineral composition data, whole-rock major and trace element geochemistry along with whole-rock Sr-Nd isotopes and PGEs in order to constrain the evolution of the Panzhihua parent magma en route from source to chamber and the formation of Fe-Ti oxide ore layers. Furthermore an initial pilot study using O-isotope data is conducted on Ti-magnetite and plagioclase separates from gabbroic vs. ore rocks. Results are coupled with detailed thermodynamic modeling using the software PELE in order to further constrain Fe-Ti oxide ore layer formation. The intrusion is characterised by extreme depletion of PGEs relative to the coeval flood basalts and picrites. High Cu/Pd and Pd/Pt imply two separate stages of S-saturated and S-undersaturated depletion of PGEs. Pd is highly compatible in sulphide and is quickly scavenged by sulphide liquids resulting in an increase in Cu/Pd of the residual liquid. Furthermore decoupling of Pd and Pt can be achieved by either late stage hydrothermal alteration or through S-undersaturated stage of PGE depletion where Pt is scavenged by Pt-rich alloys or oxide minerals. I show that the latter is more likely. Fractionation modeling suggests that the Panzhihua parent magma formed at depth from original picritic magma. This is consistent with several other recent studies on other layered intrusions of the ELIP. Sr-Nd isotopic ratios indicate very little crustal contamination has occurred en route to the current chamber. Sr and Nd concentrations of footwall rocks are too low to produce any significant change in initial Sr and Nd isotopic ratios of the intruding basaltic magmas, indicating that crustal contamination will not be indicated by Sr-Nd isotopic ratios. Gradational change in the Sr-Nd isotope ratios across the MGZ provides strong evidence for formation in an open system by multiple replenishments of progressively less contaminated magmas from depth. Contamination is difficult to constrain but must be occurring prior to emplacement at the current level (low Sr and Nd contents of footwall). A gradational upward decrease in highly incompatible element across the MGZ can then be explained by continuous magma flow, which effectively removes the evolved intercumulus liquids from the growing cumulate pile at the base of the chamber. The initial stages of formation of the Panzhihua intrusion are interpreted to result from prolonged low volume pulses of magma into a slowly opening chamber. The timing of Fe-Ti oxide crystallisation is fundamental in the understanding of the petrogenesis of ore layers. Distinct geochemical variation in whole-rock Fe2O3/TiO2 and Zr/Nb indicates that Timagnetite is the dominant oxide within the lower ± 270 m of the intrusion whereas above this level both Ti-magnetite and ilmenite are present as cumulus phases. This is interpreted to indicate a variation in the fO2 where the lower intrusion crystallises at higher fO2 relative to that above this level. Silicates within the ore layers, in particular plagioclase, are highly embayed and resorped where in contact with Fe-Ti oxides. This characteristic of the silicate grains implies early crystallisation prior to Fe-Ti oxides with subsequent disequilibrium conditions resulting in resorption. Furthermore distinct reaction rims of kaersutite amphibole, Fo-enriched olivine, An-enriched plagioclase and pleonaste are observed. The abundance of amphibole suggests H2O involvement in this reaction and consumption of silicates. A model for parent magma crystallisation at various H2O contents indicates that plagioclase crystallisation temperature is very sensitive to H2O content of the parent magma. Plagioclase crystallises early for “dry” compositions but significantly later for “wet” compositions. Fe-Ti oxide ore layers are generally well layered, contain gabbroic xenoliths and are observed raversing/cross-cutting the cumulate stratigraphy. I present here a new model for ore layer formation in order to account for these distinct features of the ore layers. A model invoking multiple replenishments of magma with variable oxide microphenocryst content, H2O content and volume is proposed. Magma evolving in the plumbing system and fed to the Panzhihua chamber is variably enriched in H2O, which results in significantly different crystallisation paths. High H2O magmas (> 2 wt %) crystallise Fe-Ti oxides early whereas low H2O magmas (< 1 wt %) crystallise oxides late. Early pulses of H2O-poor magma crystallise a sequence of plag+cpx+Fe-Ti oxide (±ol). Later pulses of H2Orich magma subsequently intrude the partially crystallised cumulate sequence incorporating and consuming previously crystallised silicates with subsequent early crystallisation of Ti-magnetite and formation of ore layers. H2O-rich magmas likely have suspended Ti-magnetite microphenocrysts as well, which crystallise at depth in the plumbing system. This model can account for the various characteristic features of the Fe-Ti oxide ore layers at the Panzhihua intrusion as well as other Fe-Ti oxide ore bearing intrusions in the region.
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Adipuri, Andrew Materials Science &amp Engineering Faculty of Science UNSW. "Chlorination of Titanium Oxycarbide and Oxycarbonitride." Publisher:University of New South Wales. Materials Science & Engineering, 2009. http://handle.unsw.edu.au/1959.4/44405.

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The project undertook a systematic study of chlorination of titanium oxycarbide and oxycarbonitride with the aim to develop further understanding of kinetics and mechanisms of the chlorination reactions. The project studied titania, ilmenite ores, and synthetic rutile reduced by carbon in argon and nitrogen and chlorinated at different temperatures, gas flow rates and compositions. Chlorination of titanium suboxides, iron and impurities in ilmenite was also examined. Chlorination of titanium oxycarbide Ti(O,C) or oxycarbonitride Ti(O,C,N) can be implemented at 200 to 400 deg.C, while the commercial chlorination process in the production of titanium metal or titania pigment requires 800 to 1100 deg.C. This makes chlorination of Ti(O,C) or Ti(O,C,N) an attractive technology in processing of titanium minerals. Chlorination reaction is strongly exothermal, which increased the sample temperature up to 200 deg.C above the furnace temperature. The chlorination of Ti(O,C) or Ti(O,C,N) was ignited at 150 deg.C to 200 deg.C depending on the sample composition. Their chlorination at 235 deg.C to 400 deg.C was close to completion in less than 30 min. The chlorination rate of titanium oxycarbide or oxycarbonitride increased with increasing gas flow rate. Sample composition had a significant effect on the extent of chlorination. The optimum results were obtained for titanium oxycarbide or oxycarbonitride produced with carbon to titania molar ratio of 2.5; these samples contained no detectable excess of carbon or unreduced titanium suboxides. In chlorination of reduced ilmenite ores and synthetic rutile, Ti(O,C) or Ti(O,C,N), metallic iron and Ti2O3 were chlorinated. The rate and extent of chlorination of titanium increased with increasing carbon to TiO2 ratio. Chlorination of Ti2O3 was slow relative to Ti(O,C) or Ti(O,C,N) and iron; chlorination of impurity oxides such as MgO, SiO2 and Al2O3 was not observed. The project also examined chlorination of Ti(O,C) or Ti(O,C,N) in ilmenite ore and synthetic rutile after removal of iron, which was achieved by aerated leaching of reduced samples in heated flask containing 0.37 M of ammonium chloride solution. Iron removal from the ilmenite ore or synthetic rutile resulted in higher rate and extent of chlorination of titanium oxycarbide or oxycarbonitride.
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Van, Dyk Jacobus Philippus. "Process development for the production of beneficiated titania slag." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-10122009-144157/.

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HACHA, RONALD ROJAS. "MINERALOGICAL CHARACTERIZATION OF GOLD ORE OF THE RIO PARACATU MINERAÇÃO (RPM), AIMING AT THE DETERMINATION OF TITANIUM–BEARING MINERALS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16974@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Neste trabalho são apresentados os resultados da caracterização mineralógica de uma amostra de minério de ouro da RPM – Kinross, que teve como objetivo principal, identificar os minerais portadores de titânio e avaliar o espectro de liberação dos minerais de interesse. A metodologia empregada compreendeu a realização de análises granulométricas, separações em meio denso e magnética. Os estudos mineralógicos foram realizados por meio da difratometria de raios X (DRX), microscopia ótica e microscopia eletrônica de varredura (MEV) por meio do sistema Mineral Liberation Analyzer – MLA. Os produtos obtidos foram submetidos à análise química por espectrometria de fluorescência de raios X (FRX). As análises químicas indicaram que a amostra estava constituída essencialmente por SiO2 (66,4%), Al2O3 (14,2%), Fe2O3 (7,22%) e TiO2 (1%). Visando avaliar o espectro de liberação dos minerais portadores de titânio, o estudo foi focado em seis faixas granulométricas (-300+212; -212+150; - 150+104; -104+74; -74+53; e -53+37um). Cerca de 20% do material de todas as frações foi constituída por material afundado (meio denso), sendo composto principalmente de SiO2 (35%), Fe2O3 (30%), Al2O3 (>7%) e TiO2 (<5%). A fração flutuada é composta em sua maioria de SiO2 e Al2O3. As análises de DRX da fração afundada indicaram a presença de ilmenita, anatásio e rutilo. As frações afundadas foram submetidas à separação magnética no separador Frantz em diferentes intensidades de corrente (0,3 até 1,75A), através desta operação se concentrou até 8% em massa de TiO2 na fração -104+74um e a 0,5A. As frações afundadas foram submetidas a estudos sistemáticos no MEV com o sistema MLA, confirmando a presença de ilmenita, anatásio e rutilo como os minerais portadores de titânio. A liberação completa dos minerais carreadores de titânio foi aproximadamente de 1% em massa, já a ganga liberou-se mais de 90% em massa. A partir dos resultados obtidos se observou que é possível concentrar o TiO2 contido no minério.
This work presents studies in Minerals Characterization of gold ore sample from RPM-Kinross with objective to identify their titanium-bearing minerals and to assess its behavior in different size fraction (spectrum release). The methodology involved particle size analysis and minerals separation (separation in dense medium and magnetic separation), followed of mineralogical studies by XRay Diffraction, Optical Microscopy and Scanning Electron Microscopy (SEM) by using the Mineral Liberation Analyzer-MLA. The products obtained were submitted to Chemical Analysis of X-Ray Fluorescence. The analysis of X-Ray Fluorescence revealed that the sample studied was formed essentially by SiO2 (66,4%), Al2O3 (14,2%), Fe2O3 (7,22%) and TiO2 (1%). The studies were focused in six different sizes (-300+212; -212+150; -150+104; -104+74; -74+53 and - 53+37um). ). About 20% of the material from all fractions material is sunk (dense medium), composed mainly of SiO2 (35%), Fe2O3 (30%), Al2O3 (> 7%) and TiO2 (<5%). The floated fraction was composed mainly of SiO2 and Al2O3. The XRD of the sunken fraction indicated the presence of ilmenite, rutile and anatase. The sunken fractions were subjected to magnetic separation in the Frantz separator at different current intensities (0.3 to 1.75A), this operation was concentrated up to 8 wt% TiO2 in the fraction -104 +74um and 0.5A. The sunken fractions were subjected to systematic studies in the SEM system with MLA, confirming the presence of ilmenite, rutile and anatase as the titanium-bearing minerals. The gangue has been release of the mineral carrier of titanium was approximately 1% wt%, the denim has released more than 90% wt%. From the results it was observed that it is possible to concentrate the TiO2 contained in the ore.
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Longbottom, Raymond James. "The formation of cementite from hematite and titanomagnetite iron ore and its stability /." 2005. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20050816.115047/index.html.

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Ni, I.-Ming, and 倪益民. "THE CONSTITUENT OF THE NATURALLY OCCURRED RADIOACTIVE NUCLIDES IN TITANIUM ORE." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/19875057830317897128.

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碩士
國立清華大學
原子科學系
88
Because of the industrial activities by human beings, especially the extraction and mining of mines, the radioactive nuclides could be enhanced to the products, therefore increase radiation dose to the public. Aggregate is a by-product of the titanium dioxide production process. Since the ore contains trace amount of naturally occurred radioactive uranium, thorium and potassium, these radioactive nuclides are inevitably carried over to the aggregate. In this research, we study into the radiation characteristics of the aggregate by determining it's constituent of naturally occurred radioactive material in order to know if it could cause the extra radiation does to the public. The research was divided into two major parts as follows : (1) to assess the response of the ore density to the efficiency of the HPGe Detector using a sample standard, and find out it's efficiency regression straight line by experiment; (2) to analyze the naturally occurred radioactive uranium, thorium and potassium of titanium ore in quality and quantity, and trying to find the relationship in the same sort of titanium ore. The results show : (1) the efficiency of the gamma energy will decreases as the density of titanium ore increases. (2) the constituent of the naturally occurred radioactive nuclides in titanium ore has a wildly distributed, but there is a fixed correlation in the same sort of ore. (3) there is the high quantity contained of the radioactive thorium in aggregate available, so it can't be used as a building material, and need to improve the radiation hazard for making their commercial application.
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Books on the topic "Titanium ores"

1

Gwosdz, W. Data on titanium minerals. Zomba [Malawi]: Republic of Malawi, Ministry of Forestry and Natural Resources, Geological Survey Dept., 1992.

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N, Breit George, and Geological Survey (U.S.), eds. Mineralogical and chemical composition of samples from the Christy vanadium-titanium deposit, Hot Springs County, Arkansas. Denver, Colo: U.S. Dept. of the Interior, Geological Survey, 1992.

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Levchenko, E. N. Prognozirovanie tekhnologicheskikh svoĭstv titan-t︠s︡irkonievykh rossypeĭ Rossii na rannikh stadii︠a︡kh geologorazvedochnykh rabot. Moskva: Institut mineralogii, geokhimii i kristallokhimii redkikh elementov (IMGRE), 2007.

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Naĭfonov, Taze Baboevich. Flotat͡s︡ionnoe obogashchenie kompleksnykh titanovykh i t͡s︡irkonievykh rud. Apatity: Rossiĭskai͡a︡ akademii͡a︡ nauk, Kolʹskiĭ nauch. t͡s︡entr, 1994.

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I, Shabalin L., and Manokhin A. I, eds. Titanomagnetity: Mestorozhdenii͡a︡, metallurgii͡a︡, khimicheskai͡a︡ tekhnologii͡a︡. Moskva: "Nauka", 1986.

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Force, Eric R. Geology of titanium-mineral deposits. Boulder, Colo: Geological Society of America, 1991.

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A, Goldin B., and Dudkin B. N, eds. Keramicheskie materialy na osnove titan- i ali͡u︡miniĭsoderzhashchego syrʹi͡a︡ Respubliki Komi. Syktyvkar: Komi NT͡S︡ UrO RAN, 1995.

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Savko, A. D. Titan-t︠s︡irkonievye rossypi T︠S︡entralʹno-Chernozemnogo raĭona. Voronezh: Izd-vo Voronezhskogo universiteta, 1995.

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Force, Eric R. Titanium mineral resources of the western U.S.: An update. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Scott, Creely, and Geological Survey (U.S.), eds. Titanium mineral resources of the western U.S.: An update. Tucson, Ariz: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Book chapters on the topic "Titanium ores"

1

Fatollahi-Fard, Farzin, and Petras Christiaan Pistorius. "Production of Titanium Oxycarbide from Iron-rich Titanium Ores." In Proceedings of the 13th World Conference on Titanium, 65–69. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch8.

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Zhang, Yan, Xiaojiang Wu, Hanglei Niu, Minge Zhao, Gele Qing, Zhixing Zhao, Yunqing Tian, et al. "Study on Sinter Iron Ores and Titanium Ores Used in Pelletizing." In Characterization of Minerals, Metals, and Materials 2021, 155–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65493-1_15.

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Fatollahi-Fard, Farzin, and Petrus Christiaan Pistorius. "Electrochemical Upgrading of Iron-Rich Titanium Ores." In Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016, 761–69. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48769-4_81.

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Fatollahi-Fard, Farzin, and Petrus Christiaan Pistorius. "Electrochemical Upgrading of Iron-Rich Titanium Ores." In Advances in Molten Slags, Fluxes, and Salts, 761–69. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119333197.ch81.

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Lyutoev, Vladimir P., Alexander B. Makeev, and Andrey Yu Lysyuk. "Application of Mössbauer, ESR, and FTIR Spectroscopy for Mineralogical and Technological Research of Titanium Ores." In Springer Proceedings in Earth and Environmental Sciences, 121–27. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00925-0_19.

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Sekimoto, Hidehiro, Shuhei Yahaba, Shintaro Chiba, and Katsunori Yamaguchi. "New Separation Technique of Titanium and Iron for Titanium Ore Upgrading." In Proceedings of the 13th World Conference on Titanium, 159–63. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch24.

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Withers, J. C., R. O. Loutfy, and S. M. Pickard. "Electrolytic Ti Powder Production from Ore Sources." In Proceedings of the 13th World Conference on Titanium, 57–63. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch7.

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Castroviejo, Ricardo. "Titanite (tit/sphene)." In A Practical Guide to Ore Microscopy—Volume 1, 757–61. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-12654-3_125.

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Rang, Jungshin, and Tom H. Okabe. "Novel Titanium Ore Upgrading Process Free from Waste Discharge." In Proceedings of the 13th World Conference on Titanium, 93–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch13.

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Zhuang, Zemin, Jieyun Chen, Bo Meng, and Shaobo Zheng. "The Kinetics Test of Vanadium-Titanium Magnetite Iron Ore in Smelting Reduction." In TMS2015 Supplemental Proceedings, 911–17. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093466.ch111.

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Conference papers on the topic "Titanium ores"

1

P. Khrushchov, E., L. S. Galetskiy, O. O. Remezova, O. P. Lobasov, and Yu V. Kyrpach. "Computer modeling placer titanium ores deposit." In 9th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects. Netherlands: EAGE Publications BV, 2010. http://dx.doi.org/10.3997/2214-4609.201402864.

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Buzmakov, V. N., and Y. V. Volodina. "TITANIUM-MAGNETITE DEPOSITS AS A PROMISING RAW MATERIAL BASE FOR METALLURGY IN THE URALS (BASED ON THE EXPERIENCE OF DEVELOPING THE KACHKANAR GROUP OF DEPOSITS)." In Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. ПЕРМСКИЙ ГОСУДАРСТВЕННЫЙ НАЦИОНАЛЬНЫЙ ИССЛЕДОВАТЕЛЬСКИЙ УНИВЕРСИТЕТ, 2022. http://dx.doi.org/10.17072/chirvinsky.2022.27.

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Since the depletion of reserves of magnetite ores, profitable for mining, the role of titanomagnetite ores increases. In addition, the presence of V2O5 in the ores significantly increases their value, which is why the deposits are used only for the ex-traction of vanadium, and titanium and vanadium go to the waste of metallurgical pro-duction. If the titanium cannot be removed to the proper extent, then the ores are not mined. However, for the successful application of modern technologies for processing the ores of these deposits, it is necessary to take into account a number of mineralog-ical and genetic factors, and as a result, to conduct technological research at the early stages of geological study of ore objects. Even in the process of assessing a deposit, it is necessary to consider not only the enrichment technologies, but also the metallur-gical processing, as well as to carry out geological and technological mapping, which will effectively manage the quality of products at all stages of the production process.
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Ponariadov, A. V. "IMPROVEMENT OF METHODOLOGICAL APPROACHES OF MINERALOGICAL SUPPORT OF TITANIUM ORES COMPLEX EVALUATION." In Annual Meeting of the Russian Mineralogical Society combined with the Fedorov Session 2023. LEMA, 2023. http://dx.doi.org/10.30695/zrmo/2023.091.

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Miller, Catherine, Jensen Delawder, Christopher R. Emproto, David Gold, Adam C. Simon, and Ryan Mathur. "TITANIUM ISOTOPE VARIATIONS IN MAGNETITE FROM ROCKS AND ORES IN THE BUSHVELD COMPLEX." In Northeastern Section - 57th Annual Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022ne-373474.

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Figura, L., and M. Kovalchuk. "The Ore-Bearing of the Weathering Crust, the Productive Layer and the Overburden of the Osynova Area of the Mezhyrichne Deposit Titanium Ores." In 17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment. European Association of Geoscientists & Engineers, 2023. http://dx.doi.org/10.3997/2214-4609.2023520030.

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Rudko, Georgii, and Maksym Ozerko. "ASSESSMENT OF ENVIRONMENTAL CHANGES DURING MINING OF FELDSPAR DEPOSITS IN UKRAINE." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b1/v3/29.

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"Possible negative impacts on the environment during mining of feldspar deposits with open-pit and underground mine are defined. The main changes have been identified, which are as follows: air pollution, soil destructions, change of relief, a local decrease in groundwater level, pollution by sewage and waste. Destructions of the soil cover are fixed under the dumps of the quarry and in the path of the movement of quarry equipment. Through the development of a pit and dumps, the primary relief acquires significant changes and the action of forces caused primarily by gravity is activated, aimed at smoothing out negative and positive relief forms. An increase in the height difference from the dump ridge to the bottom of the quarry and the formation of a significant, pronounced depression of the relief redirects the surface runoff, increases its speed, and reduces infiltration into the soil. Mining development caused drainage of groundwater due to its release to the surface and evaporation. Air pollution has a bigger scale than other components of negative impacts. The main impact of mining activities is due to emissions of pollutants into the atmosphere as a result of blowing dust from the surface of dumps and emissions from quarry transport and their deposition on the soil and storage of industrial waste. The main pollutants are inorganic dust with content of SiO2 - 65-82% and Al2O3 - 11-21%. Separately, the article discusses the impact on the environment during multi-components deposits` exploitation, where feldspar concentrates are produced as by-products. Several deposits in Ukraine belong to the group: Bakhtyn (fluorite ores), Nosachivske (titanium-ilmenite ores), Perzhanske deposits of rare metals, Mazurivske (tantalum and niobium ores). Most of them are planned to be mined underground, which saves more land resources in comparison with open workings. The placement of mine shafts and industrial sites for their maintenance requires an area of about 30 hectares. All of them have a complex ore processing with the separation of several concentrates, which necessitates the use of flotation and other reagents. The development of such deposits involves the organization of tailings and circulating water supply of the processing plant."
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Bunin, I., and N. Anashkina. "High-power nanosecond electromagnetic pulses and dielectric barrier discharge in air consequences on structural and structure sensitive properties of ilmenite surface." In 8th International Congress on Energy Fluxes and Radiation Effects. Crossref, 2022. http://dx.doi.org/10.56761/efre2022.c3-p-004001.

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The paper presents the results of experimental studies on the influence of two types of nonequilibrium electrical discharges (high-power nanosecond electromagnetic pulse (HPEMP) and dielectric barrier discharges (DBD) in air at atmospheric pressure) have on the surface morphology, microhardness, and physicochemical properties of natural ilmenite (Juina deposit of Brazil). Scanning electron microscopy (SEM-EDX), Fourier-transform infrared spectroscopy (FTIR), microhardness testing, contact angles of surface wetting, and streaming potentials are used to examine the morphology, defects, chemical composition of ilmenite surfaces, and its structure sensitive properties. Using FTIR, we established, the following possible mechanisms of the nonthermal effect of HPEMP and DBD low temperature plasma irradiation, which modify the structural state of ilmenite surfaces: (i) the transformation (destruction) of the mineral’s crystalline structure; (ii) the electrical disintegration and removal of fine films of iron oxides (hydroxides) from the ilmenite surfaces, and (iii) the subsequent hydroxylation and/or oxidation of Fe2+ to Fe3+ iron ions on the surfaces, due to the effect of the products of microdischarge plasmas. Advantages of using brief energy treatments (ttreat = 10–30 s) to modify the structural-chemical state of ilmenite surfaces and the physicochemical properties of mineral in order to improve the efficiency of processing complex titanium ores are shown. Keywords: ilmenite, high-power nanosecond electromagnetic pulses, dielectric barrier discharge, surface, microscopy, spectroscopy, microhardness, electrokinetic potential, contact angle.
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Mihalchenko, I., A. Andreev, and V. Zagorodniy. "Niobium and titanium in the thorium-uranium albitites of the Novooleksiivka ore occurrence (Ukrainian shield)." In Geoinformatics: Theoretical and Applied Aspects 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.2020geo054.

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S. Zejgelman, M., T. L. Mikheeva, and N. V. Panchenko. "To interpretation of magnetic anomalies above deposits phosphate - titanic ore of the Korosten pluton (Ukrainian Shield)." In 9th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects. Netherlands: EAGE Publications BV, 2010. http://dx.doi.org/10.3997/2214-4609.201402871.

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Surracco, Marco, and Maria Caterina Tilocca. "BENEFICIATION OF A WOLLASTONITE MINERAL." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/1.1/s04.053.

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In the paper are reported the results of the first stage of tests performed to verify the possibility of beneficiation of a wollastonite mineral (calcium metasilicate, CaSiO3). The studied ore comes from a mineralized body located in the southern part of Sardinia (Italy), in the area named "Gutturu Is Abis". The mineralized body is composed of wollastonite associated with limestone, garnets and silica. The approach to the problem has consisted of grinding tests followed by flotation tests to separate the wollastonite from the gangue minerals, mainly calcite. The effectiveness of the various steps of testing was verified by comparing the results obtained with the specifications required by the wollastonite market, which impose minimum quantities of contaminants, such as iron, titanium and magnesium, while being less severe regarding SiO2 and CaO contents. In consideration of the rather high content of calcite present in the feed material and of its better floatability compared to wollastonite, we first proceeded to its direct flotation, using as collector an industrial olein in aqueous emulsion. Sodium silicate in aqueous solution was used as a depressant. The best flotation results were obtained at basic pH values. A Denver laboratory flotation cell was utilized to perform the tests. Starting from an alimentation with a wollastonite content of 73.65%, the flotation process employed resulted in a product with 81.31% wollastonite.
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Reports on the topic "Titanium ores"

1

Pistorius, Chris, Farzin Fatollahi-Fard, and Nehal Gajjar. Advanced Electrowinning of Titanium using Alternative Ores. Office of Scientific and Technical Information (OSTI), July 2014. http://dx.doi.org/10.2172/1605562.

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