A hydrometallurgical process for the separation and recovery of antimony
2014
Abstract This study aimed to introduce a comprehensive process for separating and recovering antimony from a complex stibnite concentrate. Antimony is first leached through a chlorination–oxidation procedure to obtain SbCl 3 solution. Antimony is then recovered in the forms of cubic crystal Sb 2 O 3 (99.9%), high-purity cathode antimony (99.98%), crude cathode antimony (99.7%), high-purity SbOCl (99.9%), and crude antimony (> 99%) through the following processes: hydrolysis, membrane electrowinning, hydrolysis–low temperature smelting, and hydrolysis–washing.
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