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http://dx.doi.org/10.7844/kirr.2011.20.6.063

Chemical Leaching of Co, Cu, Ni, Al, Fe by Organic acid from Cobalt Concentrate  

Ahn, Jae-Woo (Dept. of Advanced Materials & Science. Daejin University)
Ahn, Hyo-Jin (Dept. of Advanced Materials & Science. Daejin University)
Kim, Meong-Woon (Dept. of Enviromental Eng., Daejin University)
Publication Information
Resources Recycling / v.20, no.6, 2011 , pp. 63-70 More about this Journal
Abstract
Enviromental friendly leaching process for the recovery of cobalt and copper from the cobalt concentrate was investigated by organic acids as a leaching reagent. The experimental parameters, such as organic acid type, concentrations of leachant, time and temperature of the reaction as well as the solid to liquid ratio were tested to obtain the optinum conditions for the leaching of cobalt and copper. The results showed that citric acid was the most effective leaching reagent among the organic acids used in this experiment. About 99% of cobalt, 95% of copper and 70% of nickel was dissolved by 2.0 M of citric acid. Addition of 3.0 vol.% of hydrogen perioxide was effective to enhance the leaching efficiency and the optinum temperature was found to be about $70^{\circ}C$.
Keywords
cobalt; copper; organic acid; leaching; citric acid;
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Times Cited By KSCI : 1  (Citation Analysis)
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