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C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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Chemical Kinetics & Catalysis
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Electrochemistry
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Materials Engineering
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Metallurgy
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Organic Chemistry
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Electrolytic Production Of Metals
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Abstract
Electrolyte for electrolytic copper refinning has a total arsenic content of at least 3 g/l, pref. 9-20 g/l, and such a quantity of sulphur dioxide that at least 1 g/l. pref. 2-5 g/l of the arsenic is present as. As (III) during continuous operation. Prevents the formation of floating sludge during the Cu refining, so that higher current yields are obtained, and contamination of the copper is avoided.
NL7009815A1970-07-021970-07-02Electrolytic copper - using electrolyte contg arsenic, partly trivalent and sulphur dioxide
NL7009815A
(en)
Procedure for the precipitation and separation of the arsenic of solutions that contain copper (Machine-translation by Google Translate, not legally binding)