Abstract
The plasma-chemical synthesis of tungsten carbides from multicomponent oxide-containing concentrates is studied. The existing technologies for a high-temperature action of plasma flows on mineral raw materials are analyzed. The processes of extractive metallurgy in the processing of mineral ores are investigated. The experimental dependences of the synthesized amount of tungsten carbides on the plasma flow temperature Tp, action time τ, the charge particle size, the degree of mechanical activation, the amount of introduced graphite, and the type of concentrate are considered. The dependences of the amount of tungsten carbides synthesized from a scheelite concentrate and calcium tungstate on the fraction of tungsten trioxide WO3 contained in them under the same synthesis conditions are compared. The results of spectral and scanning electron microscopy of the plasma-chemical synthesis products and a nanocrystalline tungsten carbide powder are considered. The prospects of plasma-chemical synthesis of tungsten carbides from multicomponent oxide-containing concentrates are considered.
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Translated by K. Shakhlevich
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Balakhonov, D.I., Makarov, I.A. Plasma-Chemical Synthesis of Tungsten Carbides from Multicomponent Oxide-Containing Concentrates. Russ. Metall. 2020, 870–876 (2020). https://doi.org/10.1134/S0036029520080029
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DOI: https://doi.org/10.1134/S0036029520080029