The invention relates to the technical field of recycling of waste
tungsten alloy, and provides a method for recycling
tungsten carbide and metallic
cobalt through waste
tungsten-
cobalt cemented carbide. The technological process comprises the steps that waste tungsten-
cobalt cemented carbide is cleaned and dried, vacuum cobalt extraction is conducted in a
graphite crucible,
tungsten carbide with a loose and porous structure is obtained in the
crucible, loose and porous
tungsten carbide is subjected to crushing and
grinding to obtain
tungsten carbide power, cooling
crystallization is conducted in a cobalt crystallizer, and metallic cobalt
powder is obtained. According to the method for recycling tungsten
carbide and metallic cobalt through waste tungsten-cobalt
cemented carbide, the cobalt extraction process is conducted in a high vacuum closed environment, smudging does not exist, impurities are removed through volatilization, a product is subjected to purification, and high-quality tungsten
carbide can be obtained; the purity of cobalt
powder extracted through a vacuum method is high, the condition of extracting cobalt is adjusted, and the cobalt
powder with different particle sizes can be obtained. The method for recycling tungsten carbide and metallic cobalt through waste tungsten-cobalt cemented carbide is wide in applicability, simple in equipment, low in
energy consumption, not prone to smudge, free of
pollution, high in
recovery rate, low in cost and flexible in scale, and a new way for recycling waste tungsten-cobalt cemented carbide in an efficient and green mode is opened up.