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Precipitation of Cu as the sulphide from Sulphate solution containing Cu, Ni and Co  

Park Kyung-Ho (Korea Institute of Geoscience Mineral Resources, Minerals and Materials Processing Division)
Jung Sun-Hee (Korea Institute of Geoscience Mineral Resources, Minerals and Materials Processing Division)
Park Jin-Tae (Korea Institute of Geoscience Mineral Resources, Minerals and Materials Processing Division)
Nam Chul-Woo (Korea Institute of Geoscience Mineral Resources, Minerals and Materials Processing Division)
Kim Hong-In (Korea Institute of Geoscience Mineral Resources, Minerals and Materials Processing Division)
Publication Information
Resources Recycling / v.14, no.6, 2005 , pp. 16-20 More about this Journal
Abstract
The selective sulphide precipitation of copper from sulphate solution containing nickel and cobalt was studied with adding $Na_{2}S$ solution. Precipitation efficiency of copper increased with raising pH of solution and increasing the amount of $Na_{2}S$ added and lowing its concentration. The increase in reaction time and temperature also improved the precipitation of copper. However, attempts to selectively precipitate copper met with limited success because of co-precipitation of nickel and cobalt. With adding $20\%$ $Na_{2}S$, 3 times equivalent of Cu, at pH 1.0 of solution, $25^{\circ}C$ and 30 minutes of reaction time, precipitation efficiencies of copper, nickel and cobalt were $94.1\%$, $4.3\%$ and $4.5\%$ respectively.
Keywords
copper; mixed solution; copper sulphide; precipitation; separation;
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Times Cited By KSCI : 1  (Citation Analysis)
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