FIELD: extraction of silver from refining intermediate products containing silver chloride. SUBSTANCE: method includes concentration of initial silver product by treatment with used electrolyte. Concentrated product is fused with soda to produce crude silver. Treatment with electrolyte is conducted until full removal of silver ions from solution and discontinued at appearance of ions of chloride in it. Solution produced by treatment with electrolyte and concentrating copper is decoppered. Method allows extraction of silver from material containing 0.5-70% of silver and utilization of slimes of used electrolytes in silver electroplating. EFFECT: higher efficiency. 2 cl
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Authors
Dates
1995-06-27—Published
1993-09-28—Filed