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KMID : 1059519850290040390
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Journal of the Korean Chemical Society
1985 Volume.29 No. 4 p.390 ~ p.396
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Electrodeposition of Manganese from Ferromanganese Slag with Ammonium Sulfate
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Kim Duk-Mook
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Abstract
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The manganese was extracted from ferromanganese slag with 6N ammonium sulfate and purified with ammonium sulfide. The current efficiencies were substantially increased when small amounts of selenious acid is used as an additive. Stainless steel was used as cathodic electrode and lead (+1% Ag) as anodic electrode. The effects of several variables were investigated, and the optimum conditions were found to be; 40g/l Mn in electrolyte at pH 7.0 with 120g/l (NH4)2SO4, Cathode current density 60mA/cm2, Current efficiency 90% and up at the temperature about 25℃. The metal produced has been consistantly of high quality.
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