Mineralogical and Technological Assessment of Tin–Sulfide Mining Waste Dressability

Yusupov, T. S.; Кондратьев, С. А.; Халимова, С. Р.; Novikova, S. A.

doi:10.1134/s106273911804435

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…The enrichment technology should be built taking into account the specific state of the mature material that has passed the primary stage of processing. The search for effective ways to process technogenic tailings remains one of the most difficult scientific, technical, economic and environmental problems [2,3].…”

Section: Materials and Research Methodsmentioning

confidence: 99%

Evaluation of the influence of the dispersion-sludge characteristics of the pulp on the beneficiation indicators of technogenic fluorite-containing tailings

Kienko

Воронова

2020

E3S Web Conf.

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The article provides an assessment of the technological features of mature tailings from the processing of finely disseminated fluoritecontaining raw materials of the Yaroslavkaya Mining Company. The prospects for their secondary processing are considered. It has been established that the waste stored in various sectors of the enterprise’s tailings contain from 13 to 23% fluorite, 12-14% calcite. The characteristic is given to the technological features of raw materials. The fluorite grains present in the technogenic tailings are characterized by the presence of thin inclusions and veins of silicate minerals. An obstacle to the selective separation of minerals by the flotation method is the shielding coatings of the surface zone of mineral particles, formed from contact with reagents at the stage of primary ore processing and in the process of interaction with the water-air environment in the tailing dump. The ways of increasing the contrast of the adsorption properties of minerals are proposed. Important factors influencing the process of mineral selection, allowing to influence the quality characteristics of flotation of refractory secondary raw materials is fine grinding of the material in combination with a high degree of dilution of the pulp. The possibility of extracting concentrates with a CaF2 content of 95.2-95.6% with the recovery of fluorite in them of 57-60.7% is shown. The introduction of inter-cycle regrind of foam products into the operation scheme allows to reduce the content of silicone dioxide in concentrates to 0.98%, which meets the requirements of consumers.

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Section: Materials and Research Methodsmentioning

confidence: 99%

Evaluation of the influence of the dispersion-sludge characteristics of the pulp on the beneficiation indicators of technogenic fluorite-containing tailings

Kienko

Воронова

2020

E3S Web Conf.

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“…An important tin containing mineral of industrial importance is cassiterite. This mineral with respect to natural properties is heavy, hard, and extremely brittle, and is normally associated with lighter vein materials [4] that makes it possible to use various methods effectively for enrichment of ore [4] and industrial waste [5] in order to separate cassiterite concentrate.…”

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confidence: 99%

Metallothermic Reduction of Natural Cassiterite

et al. 2021

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The process of phase formation during metallothermic reduction of tin and associated metals from natural cassiterite containing 74.4% SnO 2 , 16.3% SiO 2 , and 9.3% FeCO 3 is studied by methods of combined thermogravimetry and differential thermal analysis (or differential scanning calorimetry), as well as Xray diffraction. Aluminum, calcium and calciumaluminum master alloy (69.4 wt.% Ca) are tested as reducing agents. The possibility is demonstrated of extracting tin from cassiterite in the form of a metal and an alloy in agreement with predicted results of thermodynamic modeling with reducing agent stoichiometric consumption. It is found that reduction of cassiterite with aluminum proceeds actively in the range 1000-1150°C, and an increase in its consumption in excess of the stoichiometric requirement hardly affects the process temperature. When using a calciumaluminum master alloy, tin from dioxide passes into the metal phase in two stages through formation of tin monoxide. Addition of aluminum to the calciumaluminum master alloy or its replacement with a mixture of metallic calcium and aluminum slightly reduces the efficiency of the reduction process.

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