FIELD: hydrometallurgy of non-ferrous metals; production of commercial copper. SUBSTANCE: copper melt is treated by salt of nitric acid, potassium, sodium and calcium nitrates being preferable. Ratio of active oxygen in said salts to copper being 0.03-0.56 %. EFFECT: improved efficiency. 3 cl, 1 tbl
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Authors
Dates
1997-10-27—Published
1995-09-01—Filed