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Recovery of tungsten and cobalt from waste hard-alloy by phosphoric acid process

Yuan Shuyu (Department of Chemistry, Tsinghua University, 100084)  
The leaching process of cobalt from waste hard-alloy by use of phosphoric acid and ozogen is introduced. The leaching-rate of cobalt can reach as high as 99. 7% by using phosphoric acid and ozogen as leaching solution under the conditions of normal temperature and vibration.
【CateGory Index】: X758.05
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