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Letteratura scientifica selezionata sul tema "Mineral Processing"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 7 settembre 2023

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Articoli di riviste sul tema "Mineral Processing"

Chanturiya, Valentine A., e Igor Zh Bunin. "Advances in Pulsed Power Mineral Processing Technologies". Minerals 12, n. 9 (19 settembre 2022): 1177. http://dx.doi.org/10.3390/min12091177.

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In Russia and globally, pulsed power technologies have been proposed based on the conversion of energy into a short-pulsed form and exposing geomaterials (minerals, rocks, and ores) to strictly dosed high-power pulsed electric and magnetic fields, beams of charged particles, microwave radiation, neutrons and X-ray quanta, and low-temperature plasma flows. Such pulsed energy impacts are promising methods for the pretreatment of refractory mineral feeds (refractory ores and concentration products) to increase the disintegration, softening, and liberation performance of finely disseminated mineral complexes, as well as the contrast between the physicochemical and process properties of mineral components. In this paper, we briefly review the scientific foundations of the effect of both high-power nanosecond electromagnetic pulses (HPEMP) and dielectric barrier discharge (DBD) in air on semiconductor ore minerals (sulfides, rare metals minerals) and rock-forming dielectric minerals. The underlying mechanisms of mineral intergrowth disintegration and changes in the structural and chemical states of the mineral surface when exposed to HPEMP and DBD irradiation are discussed. The high performance and potential limitations of pulsed energy impact and low-temperature plasma produced by DBD treatment of geomaterials are discussed in terms of the directional change in the process properties of the minerals to improve the concentration performance of refractory minerals and ores.

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Adorjan, L. A. "Mineral Processing Innovations". Canadian Metallurgical Quarterly 24, n. 1 (gennaio 1985): 15–25. http://dx.doi.org/10.1179/cmq.1985.24.1.15.

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Apling, Alan. "Mineral processing technology". Corrosion Science 36, n. 4 (aprile 1994): 743–44. http://dx.doi.org/10.1016/0010-938x(94)90078-7.

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Mikhlin, Yuri. "X-ray Photoelectron Spectroscopy in Mineral Processing Studies". Applied Sciences 10, n. 15 (26 luglio 2020): 5138. http://dx.doi.org/10.3390/app10155138.

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Surface phenomena play the crucial role in the behavior of sulfide minerals in mineral processing of base and precious metal ores, including flotation, leaching, and environmental concerns. X-ray photoelectron spectroscopy (XPS) is the main experimental technique for surface characterization at present. However, there exist a number of problems related with complex composition of natural mineral systems, and instability of surface species and mineral/aqueous phase interfaces in the spectrometer vacuum. This overview describes contemporary XPS methods in terms of categorization and quantitative analysis of oxidation products, adsorbates and non-stoichiometric layers of sulfide phases, depth and lateral spatial resolution for minerals and ores under conditions related to mineral processing and hydrometallurgy. Specific practices allowing to preserve volatile species, e.g., elemental sulfur, polysulfide anions and flotation collectors, as well as solid/liquid interfaces are surveyed; in particular, the prospects of ambient pressure XPS and cryo-XPS of fast-frozen wet mineral pastes are discussed. It is also emphasized that further insights into the surface characteristics of individual minerals in technological slurries need new protocols of sample preparation in conjunction with high spatial resolution photoelectron spectroscopy that is still unavailable or unutilized in practice.

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Yvon, Jacques, Philippe Marion, Laurent Michot, Frédéric Villieras, Friedrich Ernst Wagner e Jοspeh Friedl. "Development of mineralogy applications in mineral processing". European Journal of Mineralogy 3, n. 4 (27 agosto 1991): 667–76. http://dx.doi.org/10.1127/ejm/3/4/0667.

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Han, Xiu Li, Chang Cun Li e Li Na Liu. "Study on Processing Mineralogy of Xuanhua Iron Ore". Applied Mechanics and Materials 50-51 (febbraio 2011): 751–55. http://dx.doi.org/10.4028/www.scientific.net/amm.50-51.751.

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The chemical component, mineral composition and dissemination characteristics of Xuanhua iron ore are researched systematically. The result shows that: the iron ore mainly is oolitic structure and colloform, xenomorphic granular texture, the mineral composition is complex, the primary metallic minerals is hematite, and the rocky minerals mainly is quartz, followed by carbonate, epidote, chlorite, and amphibole. The diffraction size of hematite and rocky minerals is fine. It is difficult to liberate between hematite and rocky minerals and easy to be mud. The iron ore is very hard to separate, and it can be used in the process of stage grinding and concentration.

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Pham, Luan Van. "Challenges and opportunities for development of the Vietnam mineral processing in the XXI century". Journal of Mining and Earth Sciences 62, n. 3b (20 luglio 2021): 1–8. http://dx.doi.org/10.46326/jmes.2021.62(3b).01.

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Mineral mining and processing Industry of Vietnam is facing a number of huge challenges at present, but there are also great opportunities for its growth in the future. Mineral processing plants need to make breakthrough improvements in the process designing, technology and equipment utilisation in order to meet requirements of the new era. These challenges force our miners and mineral processing operators to constantly make efforts in researches and to bring best solutions to improve plant operations to ensure the requirements of safety, market demands, product quality, sustainable development and environmental friendliness. Specifically, the issues that need to be addressed urgently are capacity and quality of the workforce, tailings treatment, fine particle processing, ores of low washability, recovery rate increase and maximisation of recoverable valuable minerals, environmental issues and workplace safety monitoring and control, maximasation of production efficiency and reduction of operating costs. This report presents the current key challenges of the mining and mineral processing industry in order to help professionals and policy makers in the field of mineral mining and processing to bring rational directions for action initiate appropriate studies and improve management methods; to help mineral processing plants in improving the production efficiency and recovery of valuable minerals; to reduce operating costs and to become environmentally friendly and to develop sustainably.

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Herbst, John A., e Donghong Gao. "Mining and mineral processing". International Journal of Computational Fluid Dynamics 23, n. 2 (febbraio 2009): 79–80. http://dx.doi.org/10.1080/10618560902811450.

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Attia, Y. A. "Challenges in mineral processing". International Journal of Mineral Processing 31, n. 1-2 (aprile 1991): 146–47. http://dx.doi.org/10.1016/0301-7516(91)90012-8.

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Wills, B. A. "Challenges in mineral processing". Minerals Engineering 2, n. 3 (gennaio 1989): 431–34. http://dx.doi.org/10.1016/0892-6875(89)90012-5.

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Tesi sul tema "Mineral Processing"

Al-Bassam, Ahmed Z. Mohamed Hussein. "Mineral processing using deep eutectic solvents". Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42876.

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Processing sulfur containing minerals is one of the biggest sources of acute anthropogenic pollution particularly in the form of acid mine drainage. Sulfur-based minerals are generally roasted to convert them to the oxide, producing SO2 or leached in acid producing H2S. This study attempts to show an innovative method for processing sulfide-based minerals using a deep eutectic solvent (DES), Ethaline, which is a mixture of choline chloride and ethylene glycol. It is shown that pyrite can be solubilised by both electrochemical oxidation and reduction in a DES. A novel method is demonstrated to investigate the redox properties of minerals using a paste made from the mineral powder in a DES. The first bulk electrochemical dissolution of pyrite is shown without the formation of H2S or SO2. The solubilised species are investigated using cyclic voltammetry UV-vis spectroscopy and EXAFS. In all cases for the iron minerals studied, it was found that the electrochemistry of the counter ion and not the metal, controlled the ease of dissolution. It is also shown that the soluble species, including elements such as arsenic, can be recovered electrochemically which could potentially decrease acid mine drainage. The electrochemical properties of other iron–sulfur and iron–arsenic minerals are also presented and compared to those of pyrite. The final part of this study uses different cell designs in an endeavour to optimise the space-time-yield of the electrochemically assisted digestion of jarosite. It was found that the electrochemical digestion of material was up to 20 faster than the chemical dissolution. It was, however found that formation of insoluble precipitates, particularly of lead and zinc sulfates affected the performance of the separator membranes and this could decrease the yield of digested metal. The presence of high concentrations of iron salts led to passivating films on the zinc surface during cementation.

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Basnayaka, Lahiru Rasanga. "Influence of Clay on Mineral Processing Techniques". Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/74929.

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This PhD thesis investigated the influence of kaolin and bentonite clays in the ore on flotation, filtration and centrifugal concentration. The results showed that the presence of particularly bentonite in the ore had a detrimental effect on flotation and filtration. The information generated from this work will advance our knowledge as well as provide important information for plant metallurgists. The project, therefore, is essential for the mineral industry that process clay-containing ores.

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Agbolosoo, Emmanuel Kwami. "Mineral processing in a less developed country: Bauxite processing in Ghana". Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185546.

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The purpose of this dissertation is to evaluate the feasiblity of alumina production in Ghana to replace imported alumina for the production of aluminum. It spells out the conditions which led to the existing bauxite-alumina-aluminum trade in the country. The structure of the economy of Ghana is examined to show the contributions of the important sectors to the total income of the country, and its dependence on a few export commodities for revenue. The plan to build a dam for the generation of hydroelectric power was linked to the establishment of an integrated aluminum industry based on the exploitation of domestic bauxite reserves. As the country could not finance the project alone, foreign assistance was sought. VALCO, a subsidiary of Kaiser and Reynolds, was formed to undertake the project. The agreement reached with VALCO was that a smelter would be built to use imported alumina for ten years, during which time a refinery would be built to feed the smelter from domestic sources. However, after ten years this could not be achieved, and the smelter continues to use imported alumina. A model of the world aluminum economy is used for analyzing the sensitivity of price to production and consumption expansion. The results show that industry demand is sensitive to the level of industrial activities in the developed countries, and less sensitive to the own price and cross price variables of aluminum in both the short and long run. On the other hand, supply is inelastic to the own price and the rate of capacity utilization in the short run, but elastic to both variables in the long run. An appraisal of opening a bauxite mine and an alumina refinery at Kibi is undertaken. The results show the levels of bauxite and alumina prices and the costs of construction at which the project is feasible. The shadow values and weights used are permittd to vary with changes in the economy's foreign trade and the balance of payments.

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Gwamba, John. "Pearl millet : influence of mineral biofortification and simple processing technologies on minerals and antinutrients". Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60808.

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Pearl millet is an important staple food in rural Africa. However, the mineral bioavailability of pearl millet is low due to its high content of antinutrients, particularly phytate. This research investigated the effects of mineral biofortification, steeping/lactic acid fermentation and parboiling alone and in combination with abrasive decortication of pearl millet grain on its mineral and antinutrient contents. Six normal varieties and two mineral biofortified hybrids were investigated. There was considerable variability in mineral content among the varieties. Iron content ranged from 3.0 to 9.6 mg /100 g and zinc from 3.0 to 4.8 mg /100 g. The mineral biofortified hybrids Dhanashakti and ICMH 1201 had substantially higher iron (21-68%) and zinc (15-39%) contents compared to the normal varieties. Phytate content differed substantially, with levels from 830 to 1360 mg /100 g. There was no definite trend between the phytate content of normal and mineral biofortified types. Decortication did not cause significant losses in zinc, but resulted considerable iron losses (mean 31%) across the varieties. There were minimal effects of steeping/lactic acid fermentation and parboiling on iron and zinc contents. Mineral biofortified hybrids were associated with high iron and zinc content after all processing treatments. Decortication of raw grain substantially reduced phytate (mean 24%) and by a further 12 percentage points when applied after steeping/lactic acid fermentation. Parboiling plus decortication was less effective in reducing phytate content. The critical phytate: iron molar ratio of <1, above which iron absorption is seriously impaired, was not achieved with any of the processes. However, steeping/lactic acid fermentation plus decortication and parboiling plus decortication reduced the phytate: zinc molar ratio to below the critical level of <15 in some varieties. Generally, the mineral biofortified hybrids had improved phytate: mineral molar ratios than the normal varieties for both raw and processed grains. Decortication greatly reduced total phenolic content (mean 24%) across the varieties and by an additional 14 percentage points after steeping/lactic fermentation and parboiling. Abrasive decortication in combination with steeping/lactic acid fermentation is an effective way of reducing phytate content in pearl millet grain, and hence somewhat improving estimated iron and zinc availability. It is recommended that the process is utilised to a greater extent in pearl millet food processing. Parboiling is also effective in phytate reduction, and can be adopted. Because mineral biofortified pearl millet hybrids have much higher iron and zinc contents, their breeding and cultivation should be promoted in rural Africa.
Dissertation (MSc)--University of Pretoria, 2016.
Food Science
MSc
Unrestricted

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Goh, Siew Wei Chemistry Faculty of Science UNSW. "Application of surface science to sulfide mineral processing". Awarded by:University of New South Wales. School of Chemistry, 2006. http://handle.unsw.edu.au/1959.4/32912.

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Surface spectroscopic techniques have been applied to facets of the flotation beneficiation and hydrometallurgical extraction of sulfide minerals to enhance the fundamental understanding of these industrially important processes. As a precursor to the determination of surface chemical composition, the sub-surface properties of some sulfide minerals that have not previously been fully characterised were also investigated. The electronic properties of ??-NiS and ??-NiS (millerite), Ni3S2 (heazlewoodite), (Ni,Fe)9S8 (pentlandite), CuFe2S3 (cubanite), CuFeS2 (chalcopyrite), Cu5FeS4 (bornite) and CuS (covellite) were investigated by conventional and synchrotron X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy augmented by ab initio density of state calculations and NEXAFS spectral simulations. Particular aspects studied included the relationship between sulfur coordination number and core electron binding energies, the higher than expected core electron binding energies for the sulfur in the metal-excess nickel sulfides, and the formal oxidation states of the Cu and Fe in Cu-Fe sulfides. It was concluded that the binding energy dependence on coordination number was less than previously believed, that Ni-Ni bonding was the most likely explanation for the unusual properties of the Ni sulfides, and that there was no convincing evidence for Cu(II) in sulfides as had been claimed. Most of the NEXAFS spectra simulated by the FEFF8 and WIEN2k ab initio codes agreed well with experimental spectra, and the calculated densities of states were useful in rationalising the observed properties. XPS, static secondary ion mass spectrometry (SIMS) and NEXAFS spectroscopy were used to investigate thiol flotation collector adsorption on several sulfides in order to determine the way in which the collector chemisorbs to the mineral surface, to differentiate monolayer from multilayer coverage, and to characterise the multilayer species. It was found that static SIMS alone was able to differentiate monolayer from multilayer coverage, and together with angle-resolved NEXAFS spectroscopy, was also able to confirm that 2-mercaptobenzothiazole interacted through both its N and exocyclic S atoms. The altered layers formed on chalcopyrite and heazlewoodite during acid leaching were examined primarily by means of threshold S KLL Auger electron spectroscopy, but no evidence for buried interfacial species was obtained.

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Vorster, Werner. "The effect of microwave radiation on mineral processing". Thesis, University of Birmingham, 2001. http://etheses.bham.ac.uk//id/eprint/309/.

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Between 50% and 70% of the total energy used in the extraction process may be attributed to comminution. Microwave pre-treatment has been suggested as a means to decrease the energy requirements. A variety of mineral ores have been investigated and the effects of microwave radiation quantified in terms of the mineralogy, changes in the Bond Work Index, flotability and magnetic separation. It has been shown that microwave pre-treatment is most effective for coarse grained ores with consistent mineralogy consisting of good microwave absorbers in a transparent gangue (up to a 90% decrease in Bond work index for Palabora copper ore) whereas fine grained ores consisting predominantly of good absorbers are not affected as well (a reduction of only 25% in work index for Mambula ore). Although the mineralogy of minerals are affected by exposure to microwave radiation, flotability and magnetic separation characteristics have been shown not to be adversely affected, unless the microstructure is completely destroyed after prolonged microwave exposure. Computer simulations have shown that significant changes to comminution circuits are possible as a result of microwave induced work index reductions (three mills reduced to one). Purpose-built microwave units may hold the solution for more efficient mineral extraction in the near future.

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Wanigasekara-Mohotti, Don Kripalath. "Optimisation for the synthesis of mineral processing flowsheets". Thesis, The University of Sydney, 1999. https://hdl.handle.net/2123/27597.

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‘Minerals’ is a heuristic—based computer aided design system that implements an evolutionary design methodology to synthesise mineral beneficiaring flowsheets. It has been under developement at the University of Sydney since the 1970s by various post graduate students under the guidance of Professor R. G. H. Prince. In its previous development phases, the models were improved and new process units added. As a consequence, the optimiser used by ‘Minerals’ was no longer able to function properly and a “make do” optimser was implemented.

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Treloar-Bradford, Stephen Hall. "The application of artificial intelligence to mineral processing control". Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239885.

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Okibe, Naoko. "Moderately thermophilic acidophiles and their use in mineral processing". Thesis, Bangor University, 2002. https://research.bangor.ac.uk/portal/en/theses/moderately-thermophilic-acidophiles-and-their-use-in-mineral-processing(9c8b82ee-27ad-453e-baf6-9afb284c7735).html.

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This research project focused on moderately thermophilic acidophilic microorganisms and their role in the oxidation of pyrite. A major objective of the work was to assess the relative efficiencies of defined combinations of moderate thermophiles in oxidising pyrite under defined conditions. In addition, various aspects of the physiology and phylogeny of moderately thermophilic acidophiles were investigated. Moderately thermophilic acidophiles, including novel acidophiles (a thermotolerant Leptospirillum and a Ferroplasma sp. ), were isolated from a commercial stirred-tank pilot plant. Pyrite oxidation by mixed cultures of different combinations of moderate thermophiles, including the novel isolates, was assessed in preliminary shake flask experiments. Data from these experiments were used to select microbial consortia in later experiments in temperature- and pH-controlled bioreactors. These involved monitoring rates of mineral oxidation, and relative numbers of the different microorganisms included in the original inoculum, using a plating technique in conjunction with a molecular approach (FISH). The results from the pyrite oxidation studies indicated that mixed populations of acidophiles may accentuate or diminish the rates and extent of pyrite oxidation, relative to pure cultures. The thermotolerant Leptospirillum isolate was found to be unable to oxidise a pyrite concentrate when grown in pure culture, though this inhibition was overcome when the iron-oxidiser was grown in mixed cultures with various Grampositive acidophiles. Investigation of the effects of fifteen individual and mixtures of flotation chemicals on moderately thermophilic acidophiles revealed different degrees of toxicities of the different reagents and sensitivities of the microorganisms, with the Leptospirillum isolate generally being the most sensitive of those tested. The phenomenon of pH-related ferric iron toxicity to moderately thermophilic and mesophilic Gram-positive bacteria was also investigated. ARDREA (Amplified Ribosomal DNA Restriction Enzyme Analysis) using the 16S rRNA gene sequences of known acidophilic bacteria, was refined and developed, and applied successfully to identify moderate thermophiles isolated from environmental samples.

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Jirestig, Jan A. "High intensity and high gradient magnetic separation in mineral processing". Doctoral thesis, Luleå tekniska universitet, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25815.

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Natural minerals often lack well defined magnetic susceptibilities. Instead they must be thought of as occurring in a susceptibility range where the bulk susceptibility is affected by present impurities. Inclusions or foreign atoms in solid solution may alter a materials magnetic properties to a large extent. Mixed particles of dia andlor paramagnetic materials display a linear relationship while ferromagnetic inclusions involve a demagnetisation factor. The susceptibility distribution of value minerals in relation to gangue in the ore is the most important factor governing magnetic separation performance. Until recently, high gradient and high intensity separators of matrix type were exclusively used in wet processing. Now, new dry separators are extending the particle range for dry, fine particle separation. The capture characteristics of the matrix has been shown to change with the magnetic field strength. The separation cut is more precise at high fields, at low fields the capture probability graph cants. By superimposing the capture function on the susceptibility distribution of an ore, it is shown that materials containing value minerals at either high or low susceptibility is ideal for HGMS separation. Complex ores carrying value and gangue minerals distributed over a wide susceptibility range are unfavourable. The former situation is common in industrial mineral processing and in the upgrading of flotation concentrates. The latter susceptibility distribution is very common in complex sulphide ore feeds.
Godkänd; 1994; 20070429 (ysko)

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Libri sul tema "Mineral Processing"

Chelgani, Saeed Chehreh, e Ali Asimi Neisiani. Dry Mineral Processing. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93750-8.

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Yarar, B., e Z. M. Dogan, a cura di. Mineral Processing Design. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3549-5.

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Baki, Yarar, e Dogan Z. M, a cura di. Mineral processing design. Dordrecht: Nijhoff, 1987.

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Water in mineral processing. Englewood, Colo: Society for Mining, Metallurgy, and Exploration, 2012.

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Turgut, Yalcin, a cura di. Innovations in mineral processing. Sudbury, Ontario: Acme Printers, 1994.

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L, Weiss Norman, Society of Mining Engineers of AIME. e Seeley W. Mudd Memorial Fund., a cura di. SME mineral processing handbook. New York: Society of Mining Engineers of AIME, 1985.

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L, Weiss Norman, e Society of Mining Engineers of AIME., a cura di. SME mineral processing handbook. New York, N.Y: Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1985.

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C, Fuerstenau Maurice, e Han Kenneth N, a cura di. Principles of mineral processing. Littleton, Colo: Society for Mining, Metallurgy, and Exploration, 2003.

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L, Weiss Norman, e Society of Mining Engineers of AIME, a cura di. SME mineral processing handbook. New York, NY: Society of Mining Engineers of AIME, 1985.

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Skuse, David R., a cura di. Speciality Chemicals in Mineral Processing. Cambridge: Royal Society of Chemistry, 2002. http://dx.doi.org/10.1039/9781847551887.

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Capitoli di libri sul tema "Mineral Processing"

Murad, Enver, e John Cashion. "Mineral Processing". In Mössbauer Spectroscopy of Environmental Materials and Their Industrial Utilization, 315–49. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9040-2_12.

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Bustillo Revuelta, Manuel. "Mineral Processing". In Springer Textbooks in Earth Sciences, Geography and Environment, 423–530. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-58760-8_6.

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Chuanyao, Sun, e Xu Kuangdi. "Mineral Processing". In The ECPH Encyclopedia of Mining and Metallurgy, 1–6. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_924-1.

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Adeleke, Abraham Adewale. "Mineral Processing of Beach Sand Minerals". In Mineral Processing Technology, 269–71. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003323433-24.

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Karsa, David R., J. Michael Goode e Peter J. Donnelly. "Mineral Extraction Processing". In Surfactants Applications Directory, 157–63. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3038-7_8.

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Shuai, Wang, e Xu Kuangdi. "Mineral Processing Flocculant". In The ECPH Encyclopedia of Mining and Metallurgy, 1–3. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_889-1.

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Lihuang, Huang, e Xu Kuangdi. "Chemical Mineral Processing". In The ECPH Encyclopedia of Mining and Metallurgy, 1–5. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_642-1.

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Yimin, Zhu, e Xu Kuangdi. "Mineral Processing Defoamer". In The ECPH Encyclopedia of Mining and Metallurgy, 1. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_887-1.

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Xiao’ou, Xia, e Xu Kuangdi. "Mineral Processing Equipment". In The ECPH Encyclopedia of Mining and Metallurgy, 1–3. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_526-1.

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Renhuan, Yu, e Xu Kuangdi. "Mineral Processing Plant". In The ECPH Encyclopedia of Mining and Metallurgy, 1–5. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-0740-1_527-1.

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Atti di convegni sul tema "Mineral Processing"

Yankova, Teodora. "MINERAL PROCESSING WASTE UTILIZATION". In 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020. STEF92 Technology, 2020. http://dx.doi.org/10.5593/sgem2020/1.1/s04.100.

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Nakajima, Yasuharu, Joji Yamamoto, Tomoko Takahashi, Blair Thornton, Yuta Yamabe, Gjergj Dodbiba e Toyohisa Fujita. "Development of Elemental Technologies for Seafloor Mineral Processing of Seafloor Massive Sulfides". In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96040.

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Abstract Seafloor Massive Sulfides have been expected to be future mineral resources. The grade of valuable metallic elements in ores of Seafloor Massive Sulfides is usually small percentage. If valuable minerals can be extracted from the ores on deep seafloor, the total mining cost can be reduced significantly. The authors proposed Seafloor Mineral Processing, where ores are to be ground into fine particles and separated into concentrates and tailings on seafloor. The Seafloor Mineral Processing system consists of processing units for unit operations such as grinding and separation. To investigate the applicability of flotation, which is a method to separate ore particles by using the difference in wettability of minerals, to the separation unit, measurements of contact angles of sulfide minerals at high pressures were carried out. The results suggested that the contact angles of the minerals would have relationships with pressure in depending on the kind of minerals and solutions. In addition, applying Laser-Induced breakdown Spectroscopy (LIBS), an optical method for elemental analysis, to measurement of metal grade of ore particles handled as slurry in the processing units was also investigated. Signals assigned to copper, zinc, and lead were successfully detected in the spectra obtained from ore particles in slurry flow.

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Nakajima, Yasuharu, Joji Yamamoto, Shigeo Kanada, Sotaro Masanobu, Ichihiko Takahashi, Jun Sadaki, Ryosuke Abe, Katsunori Okaya, Seiji Matsuo e Toyohisa Fujita. "Study on Seafloor Mineral Processing for Mining of Seafloor Massive Sulfides". In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83354.

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Seafloor Massive Sulfides (SMSs), which were formed by deposition of precipitates from hydrothermal fluids vented from seafloor, has been expected as one of unconventional mineral resources on deep seafloors in the oceans. The authors have proposed the concept of seafloor mineral processing for SMS mining, where valuable minerals contained in SMS ores are separated on seafloor while gangue minerals are disposed on seafloor in appropriate ways. To confirm the applicability of column flotation, which is one of conventional mineral processing methods, to seafloor mineral processing, the authors carried out experiments simulating column flotation under the pressure conditions corresponding to the water depths down to 1000m in maximum using ore samples containing copper, iron, zinc and lead. In the experiments, formation of fine bubbles suitable to flotation and overflow of froth layer were observed at high pressures. The contents of copper and zinc in the concentrates recovered in the experiments at 1MPa were higher than those in the feed ores while the contents of silicon and calcium in the concentrates were lower than those in the feed ores. These results suggest that column flotation would be applicable to seafloor mineral processing.

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Konishi, Yasuhiro, Norizoh Saitoh e Takashi Ogi. "A New Biohydrometallurgical Method for Processing of Deep-Sea Mineral Resources". In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79237.

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This paper concentrates on the application of a biohydrometallurgical method for processing deep-sea mineral resources. Bioleaching technologies developed for terrestrial sulfide minerals now can be applied for metal extraction from deep-sea hydrothermal sulfides. However, little attention has been given to the bioleaching of terrestrial oxide minerals. A potentially attractive bioleaching system using the Fe(III)-reducing bacterium has recently been proposed for manganese crusts and nodules. Experimental results obtained from these systems demonstrate that bioleaching is an economical and environmentally friendly processing avenue to recover valuable metals from deep-sea mineral resources.

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Solozhenkin, P., V. Nebera, N. Lyalikova-Medvedeva e V. Larin. "Biomodification of mineral surfaces in mineral processing and hydrometallurgy". In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-110.

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"Coal processing". In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-69.

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Nakajima, Yasuharu, Joji Yamamoto, Shigeo Kanada, Sotaro Masanobu, Ichihiko Takahashi, Katsunori Okaya, Seiji Matsuo, Tomohiko Fukushima e Toyohisa Fujita. "Study on Grinding Technology for Seafloor Mineral Processing". In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10756.

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Seafloor Massive Sulfides (SMSs), which are formed by precipitates from hydrothermal fluids vented from seafloor, have been expected as one of mineral resources to be developed. The authors have proposed the concept of seafloor mineral processing for SMS mining, where valuable minerals contained in SMS ores are separated on seafloor. To apply a ball mill to the grinding unit for seafloor mineral processing, grinding experiments were carried out using a small-scale ball mill applicable to high-pressure condition. In the experiments, wet grinding and water-filled grinding of size-classified silica sands were carried out at three rotation rates to compare the grinding performance in both cases. In both cases, the silica sands were finely ground. The measurement of particle size of samples from the experiments showed that water-filled grinding had comparable grinding performance to wet grinding while the suitable rotation rate for water-filled grinding shifted to higher than that for wet grinding. This result suggests the possibility of water-filled grinding for seafloor mineral processing. If water-filled grinding can be employed for the grinding unit, the structure of the grinding unit would be simplified in comparison with wet grinding that leads to the saving of grinding costs.

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"Industrial minerals processing". In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-60.

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"Physical enrichment processing". In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-17.

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"Fine particle processing". In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-28.

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Rapporti di organizzazioni sul tema "Mineral Processing"

none,. Mineral Processing Technology Roadmap. Office of Scientific and Technical Information (OSTI), settembre 2000. http://dx.doi.org/10.2172/1218658.

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Холошин, Ігор Віталійович, Наталя Борисівна Пантелєєва, Олександр Миколайович Трунін, Людмила Володимирівна Бурман e Ольга Олександрівна Калініченко. Infrared Spectroscopy as the Method for Evaluating Technological Properties of Minerals and Their Behavior in Technological Processes. E3S Web of Conferences, 2020. http://dx.doi.org/10.31812/123456789/3929.

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Infrared spectroscopy (IR) is a highly effective method for the analysis of minerals, rocks and ores, capable of solving a whole range of problems when choosing innovative solutions for the technological processing of various types of mineral raw materials. The article considers the main directions of using the infrared spectroscopy method in assessing the technological properties of minerals and their behavior in technological processes: evaluation of the grade (quality) of mineral raw materials; analysis of the behavior of minerals in the technological process with prediction of their technological properties; analysis of changes in the structure and properties of minerals in technological processes; operational analysis of mineral substances at various stages of technological processing. The article illustrates all aspects of the use of infrared spectroscopy at various stages of studying the material composition of mineral raw materials in its enrichment assessment by specific examples of solving problems arising from the technological redistribution of various types of ore and non-metallic minerals.

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Gow, W. A., e N. D. Loucks. Index of mineral processing projects 1987. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/305086.

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Loucks, N. D., e D. M. Doyle. Index of mineral processing projects, 1989/1990. Natural Resources Canada/CMSS/Information Management, 1990. http://dx.doi.org/10.4095/328643.

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Cheng, Qiuming. Spatially and geographically weighted multivariate analysis methods for mineral image processing. Cogeo@oeaw-giscience, settembre 2011. http://dx.doi.org/10.5242/iamg.2011.0169.

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Rheault, M. M., R. Simard, P. Keating e M. M. Pelletier. Mineral exploration: digital image processing of LANDSAT, SPOT, magnetic and geochemical data. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/128045.

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Campbell, Sam, e Wiliam Dam. Evaluation of Mineral Deposits Along the Little Wind River, Riverton, WY, Processing Site. Office of Scientific and Technical Information (OSTI), dicembre 2014. http://dx.doi.org/10.2172/1258486.

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VAN DEN BOOGAART, K. Gerald, Christin WEIßFLOG e Jens GUTZMER. The Value of Adaptive Mineral Processing based on spatially varying Ore Fabric Parameters. Cogeo@oeaw-giscience, settembre 2011. http://dx.doi.org/10.5242/iamg.2011.0265.

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Flynn, T., D. T. Trexler e J. L. Hendrix. Geothermal enhancement of mineral processing in Nevada: Final report, April 25, 1985-June 30, 1986. Office of Scientific and Technical Information (OSTI), novembre 1986. http://dx.doi.org/10.2172/7011778.

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Tsikin, Maksim, e Andrey Malyavin. PHOSPHOGYPSUM PROCESSING AS A WAY TO IMPROVE THE ENVIRONMENTAL AND RESOURCE EFFICIENCY OF MINERAL FERTILIZER PRODUCTION. DOI СODE, 2022. http://dx.doi.org/10.18411/vntr2022-167-4.

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