PRODUCTION OF TUNGSTEN AND TUNGSTEN CARBIDE POWDERS

V.V.Malyshev,
 
N.F.Kushchevska
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2019, #03/04
http://www.materials.kiev.ua/article/2823

Abstract

A method has been developed to process waste of tungsten–cobalt solid solution by potentiostatic dissolution in phosphoric acid solutions. A dissolution mechanism depending on the electrode potential has been proposed. A technique for extracting tungsten from tungsten concentrates in chloride-metasilicate melts has been developed. Conditions for distributing tungsten and ore components between immiscible substances have been established.


ANODIC DISSOLUTION, CHLORIDE-METASILICATE MELTS, COBALT, HARD ALLOY, HIGH-TEMPERATURE EXTRACTION, SEPARATION FACTOR, TUNGSTEN CARBIDE, TUNGSTEN ORES AND CONCENTRATES