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| Separation of Zinc and Cobalt from Dilute Sulfate Solution by Oxidation Precipitation |
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Received:June 27, 2013
Revised:June 27, 2013
Accepted:June 27, 2013
Published Online:August 22, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.09.006 |
| KeyWord:separation of zinc and cobalt; sodium persulfate; oxidative precipitation; enrichment |
| Author | Institution |
| Xu Xiao-hui |
北京矿冶研究总院 |
| Chang Yao-chao |
北京矿冶研究总院 |
| Wang Yun |
北京矿冶研究总院 |
| Jin Ran-gong |
北京矿冶研究总院 |
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| Abstract: |
| A new process of oxidation precipitation was developed to separate cobalt from dilute zinc-bearing deironing solution with sodium persulfate as oxidant. The effects of parameters on oxidative precipitation rate of metals were investigated. The results show that after acid washing cobalt content in residue is 15.6% which is nearly 9 times to that in existing residue under the optimum conditions including dosage of sodium persulfate of 4 times of theoretical cobalt consumptions, temperature of 80 ℃, pH of 4.8~5.0, and oxidation time of 3 h. Post-precipitation solution containing exclusively zinc can be neutralized by sodium carbonate to precipitate basic zinc carbonate product with zinc content of 51.78%. |
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