The Enrichment of Stale Tailings of Bom-gorhon Tungsten Ore Deposits

Фролова, И. В.; Tikhonov, V.V.; Nalesnik, O.I.; Streltsova, A.A.

doi:10.1016/j.proche.2014.10.061

Cited by 4 publications

(3 citation statements)

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“…Generally, the beneficiation approach for scheelite and wolframite ores consists of preconcentration after crushing and grinding, followed by roughing, cleaning, and final purification stages to produce a concentrate with 65%-75% WO 3 to meet international trading requirements [47,48] . Scheelite is Suárez Sánchez diamagnetic, and therefore, magnetic separation is usually unsuitable for scheelite ores, which also generally display finer liberation sizes [20,49] . Scheelite is readily amenable to gravity concentration since it is very dense (specific gravity of around 6.1), but it is also amenable to flotation.…”

Section: Global Tungsten Tailings Overviewmentioning

confidence: 99%

“…Collectors, depressants, selective flocculants, and dispersants are reagents usually employed during flotation tests. Solution chemistry, mineral surface wettability, surface electrical properties, and surface lattice ion dissolution are primary controlling factors for flotation of tungsten minerals, particularly scheelite [49] . However, scheelite's flotation presents challenges due to the similarity of surface properties exhibited by gangue minerals to those of scheelite [10,16,21] .…”

Section: Reprocessing W Tailingsmentioning

confidence: 99%

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Tungsten tailings issues and reprocessing solutions

Msumange,

Bru

et al. 2023

Miner Miner Mater

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This paper aims to provide an overview of tungsten (W) tailings properties, detrimental impacts of these tailings, approaches to mitigate these impacts, and a presentation of methods to reprocess them to capture their economic value. Since W is widely used in a variety of industries, it has been extensively mined since the 19th century, and the mining continues to generate significant volumes of tailings. Recent data show that global W production stands at 84 kt per year, and more than 100 Mt of W tailings exist containing over 100 kt of WO3. The tailings contain variable amounts of valuable products and deleterious environmental substances. Some of the contained metals are in great demand for the energy transition. However, these tailings usually contain FeS2/Pyrrhotite and FeAsS minerals, which, when exposed to air and water, can produce acid mine drainage. As such, W tailings may pose environmental and human health risks. Globally, the reprocessing of W tailings presents a potential resource that can be regarded as a paradigm of sustainability and circular economy. Flotation, enhanced gravity separation, and wet high-intensity magnetic separation have been reported to be the common approaches to reprocessing W tailings. However, W processing presents particular difficulties owing to complex material properties, such as fine particle size, surface weathering, similarity in surface properties exhibited by gangue materials (fluorite, apatite, calcite), low concentrations of the elements of interest, and poor mineral liberation.

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Section: Global Tungsten Tailings Overviewmentioning

confidence: 99%

Section: Reprocessing W Tailingsmentioning

confidence: 99%

Tungsten tailings issues and reprocessing solutions

Msumange,

Bru

et al. 2023

Miner Miner Mater

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“…При переработке этих концентратов висмут почти полностью попадает в свинец черновой, из которого удаляется при его рафинировании. Около 90-95 % висмута производится при рафинировании свинца [6][7][8][9][10]. При выплавке меди висмут, наряду со свинцом, частично переходит в пыль и возгоны и отправляется потом на рафинировочные заводы для дальнейшего восстановления.…”

Section: Introductionunclassified

Electrolytic Processing of Pb-Bi Alloy

Korolev¹

2021

J. Sib. Fed. Univ. Eng. technol.

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Metal bismuth is mainly produced as a by-product in the production of lead, tungsten, copper, silver, gold, tin and zinc. Approximately 90 % of all extracted bismuth is obtained from lead, copper and other concentrates. The main source of bismuth is lead concentrates obtained during the processing of lead, as well as lead-zinc and other polymetallic ores. During the processing of these concentrates, bismuth almost completely enters the rough lead, from which it is removed during its refining. The most common technologies for the recovery of bismuth from lead ingots are the Kroll-Betterton process and the Betts electrolytic process. During the electrolysis of the Bi-Pb alloy, the separation of three products has been established, they are anode and cathode alloys, as well as salt melt. The complexity of pyroelectrometallurgical processing of a bismuth-poor alloy with the production of rough bismuth in one stage is confirmed, which necessitates the use of two stages of electrolysis. At the first stage of electrolysis, the anode product‑1 (17.3–48.5 % of the initial Pb-Bi alloy) of the composition has been isolated,%: 16.6–48.4 Bi; 51.4–83.2 Pb; operational extraction,%: 92.2–96.6 Bi; 9.8–44.4 Pb; main phases Bi0,3Pb0,7 and Bi0,95Pb0,05. A six-fold bismuth enrichment is achieved in the anode product. At the second stage of electrolysis of the previously isolated anode product of the composition,%: 26.7 Bi; 73.1 Pb; 0.13 Cu; 0.08 Zn, the anode product‑2 (28.1 % of the enriched Pb-Bi alloy) of the composition has been separated,%: 93.6 Bi; 4.1 Pb; 0.086 Ag; 0.0066 As; 0.006 Sb; 0.0013 Cu; 0.001 Sn; 0.0014 Zn; stage extraction,%: 98.6 Bi; 1.6 Pb; main phase Bi0,95Pb0,05. As a result of pyroelectrometallurgical processing of a Pb-Bi alloy (~10 % Bi) with anode polarization in two stages, an anode product (8.7 % of the initial alloy) of the composition has been isolated,%: ≥ 93.6 Bi; 4.1 Pb; extraction from the initial alloy,%: 93.0 Bi; 0.4 Pb has been obtained. The following modes are recommended for pyroelectrometallurgical processing in two stages of Pb-Bi alloy: process temperature 550–600 °C; anode current density: 0.5 A/cm2 at the first stage; 0.2–0.3 A/cm2 at the second stage; cathode current density: 1.5 A/cm2 at the first stage; 1.0 A/cm2 at the second stage; operating voltage on the tub: at the first stage 8–12 V; at the second stage 5–8 V; the composition of the electrolyte at both stages,%: 7 NaCl; 35 KCl; 18 PbCl2; 40 ZnCl2; the amount of electrolyte output for processing: at the first stage – 10 % of the mass of the Pb-Bi alloy after alkaline treatment; at the second stage – 10 % of the mass of the anode product of the first stage

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Comprehensive recovery of the components of ferritungstite base on reductive roasting with mixed sodium salts, water leaching and magnetic separation

Tang

Sun

et al. 2016

Minerals Engineering

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The Enrichment of Stale Tailings of Bom-gorhon Tungsten Ore Deposits

Cited by 4 publications

References 0 publications

Tungsten tailings issues and reprocessing solutions

Tungsten tailings issues and reprocessing solutions

Electrolytic Processing of Pb-Bi Alloy

Comprehensive recovery of the components of ferritungstite base on reductive roasting with mixed sodium salts, water leaching and magnetic separation

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