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| Study on Selective Precipitation of Nickel and Cobalt from Sulfate Medium with Active Magnesium Oxide |
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Received:February 21, 2013
Revised:February 22, 2013
Accepted:February 22, 2013
Published Online:August 22, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.09.001 |
| KeyWord:active magnesium oxide; precipitation; nickeliferous laterite; copper & cobalt oxide ore; nickel and cobalt selective precipitation |
| Author | Institution |
| RUAN Shu-feng |
北京矿冶研究总院 |
| JU Zhong-jun |
北京矿冶研究总院 |
| LI Qiang |
北京矿冶研究总院 |
| WANG Zhen-wen |
北京矿冶研究总院 |
| WANG Cheng-yan |
北京矿冶研究总院 |
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| Abstract: |
| Nickel and cobalt were selectively precipitated and enriched from Mn, Mg containing sulfate medium with active magnesium oxide. The results show that the optimum precipitation conditions include twice of theoretical dosage of active magnesium oxide, reaction time of 6 h, and precipitation temperature of 25 ℃. The precipitation rate of nickel and cobalt is 97.96% and 96.43% respectively. The content of nickel, cobalt, manganese and magnesium oxide in precipitate is 8.51%, 13.05%, 2.29%, and 4.97% respectively. The average static-state free settling velocity of slurry is 180 mm/min with the dosage of flocculant AN905 of 0.2 g/m3. |
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