Resource-saving methods for recycling waste tungsten carbide-cobalt cermets and extraction of tungsten from tungsten concentrates

  • V. V. Malyshev
  • A. I. Gab


A range of potentials in which the cobalt-tungsten alloy phase is selectively dissolved in the solutions of phosphoric acid to form soluble compounds of these metals while the tungsten carbide phase remains in the precipitate is determined. It is shown that tungsten ores and concentrates are decomposed at temperatures of 1050 to 1100°C in sodium chloride-sodium metasilicate melts to form two immiscible phases: halide-tungstate, which contains 96 to 99%, and silicate, which contains 90% of the ore components.


Tungsten Tungsten Carbide Hard Alloy Anodic Dissolution Scheelite 
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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  1. 1.“Kiev Polytechnic Institute” National Technical University of UrkaineKievUkraine

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