Method for Electrolytic Refining of Copper

1,157,686. Electrolytic refining of copper. MEDODOBIVEN KOMBINAT "GEORGI DAMIANOV". July 13, 1966, No.31533/66. Heading C7B. In electrolytic refining of copper by cathodic deposition, the electrolyte is maintained at 66 to 80‹C. and a periodically reversed current is employed in which the...

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Hauptverfasser:	YANAKI DIMITROV POPOV, DIMITAR ANDREEV PETROV, LUBOMIR TONTCHEV LATCHEV
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
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Zusammenfassung:	1,157,686. Electrolytic refining of copper. MEDODOBIVEN KOMBINAT "GEORGI DAMIANOV". July 13, 1966, No.31533/66. Heading C7B. In electrolytic refining of copper by cathodic deposition, the electrolyte is maintained at 66 to 80‹C. and a periodically reversed current is employed in which the ratio of the charge passed in the negative to positive directions is in the range of 10 to 40:1. Preferably the current density is in the range 2 to 7 amps/sq. dm. A typical bath comprises copper sulphate and free sulphuric acid with a total chloride ion content of 40 to 150mg/l and 0À01 to 2g/1 of colloidal additive such as bone glue.