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TUNGSTEN RAW MATERIALS FOR THE HARD ALLOYS PRODUCTION

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Background. One of the purposes of tungsten is the production of hard alloys, where tungsten concentrates (TC) of the Ingichke deposit and the products of processing of tungsten-containing manmade wastes are used as raw materials - cakes of the sludge field NPO PRMiTS JSC Almalyk MMC Purpose: assessment of the technological capabilities and prospects for processing VC from the Ingichke deposit and cakes for leaching VC from the sludge fields of the plant for the production of hard alloys WC-Co, WC-Ni. Methodology The concentration of W(VI), Cu(II), Fe(III), Mo(VI), Re(VII) ions was determined photocolorimetrically (KFK-2) and spectrometrically (AAS Perkin-Elmer 3030B, ICP-Aligent 7500 IСP MS). Sample microscopy –via SEM-EDS: EVO-MA (Carl Zeiss, Germany, Oxford Instrum, UK). We used laboratory and industrial hydrometallurgical installations at JSC Almalyk MMC. Originality. It was found that as a raw material for the production of hard alloys based on tungsten carbide with cobalt and nickel binder, W-containing cakes of sludge fields of JSC Almalyk MMC are acceptable. It is shown that in order to involve another potential resource in processing, the TC of the Ingechke deposit, it is necessary to develop a technology for its purification from impurities. Findings.The technology of auto-soda leaching of tungsten-containing cakes from VC processing has been successfully developed and implemented, which ensures the production of ammonium paratungstate that meets the requirements for the production of hard alloys. Highlights: - autoclave-soda leaching of tungsten raw materials; - technology for processing tungsten-containing cakes; - the final product of cake processing is ammonium paratungstate.

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# карбид вольфрама# твердые сплавы# кеки# шламовое поле# вольфрамовый ангидрид# вольфрам карбиди# қаттиқ қотишмалар# кеклар# шлам даласи# вольфрам ангидриди# tungsten carbide# hard alloys# cakes# sludge field# tungsten anhydride

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https://eroi.uz/11.0030/A0422-0012

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