Environment friendly and resource saving methods of tungsten and tungsten carbide production
Journal Title: Екологічні науки - Year 2018, Vol 22, Issue
Abstract
A potential region in which the phase of cobalt-tungsten alloy is selective dissolved in solutions of phosphoric acid with the forming of soluble compounds of these metals and tungsten carbide phase remains in deposit is determined. Obtained results can be used for scrap of hard alloys reworking. It was shown that tungsten ores and concentrates at 1 050–1 100о С decompose in sodium chloride–sodium metasilicate with forming two unmixing phases: halide-tungstate and silicate. The first phase contains 96–99% of tungsten, the second – more than 90% of different composits.
Authors and Affiliations
Т. Ф. Лукашенко, В. В. Малишев, І. О. Безлюда
Keywords
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