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| Study on a novel process to extract the nickel, cobalt and iron from the laterites ore |
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Received:February 16, 2012
Revised:July 10, 2012
Accepted:February 29, 2012
Published Online:July 30, 2012
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| DOI： |
| KeyWord:reduction, grinding and separation, oxygen pressure leaching; laterites |
| Author | Institution |
| Fan Xing-xiang[sub_s][sub_e][sub_s] |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| [sub_e] Wang Yun-hua[sub_s][sub_e] |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| Dong Hai-gang |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| Wu Yue-dong |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| Li Bai-yu |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| Zhao Jia-chun |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
| Li Bo-jie |
Kunming Institute of Precious Metals,State key Laboratory of Advanced Technologies of Comprehensive Utilization of Platinum Metals,Yunnan Kunming;China |
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| Abstract: |
| direct at the mineral composition for the laterite ore from Yuanjiang laterite from Yunnan province and reviewing the progress in processing technology of the laterites ore at home and abroad, a novel process route to extract the nickel, cobalt and iron from the this ore by the reduction-grinding, separation and oxygen pressure leaching has been put forward in this paper. The results show that more than 80% of the gangue from laterite ore was discarded while the nickel, cobalt and iron of laterite ore was concentrated by the reduction-grinding, separation; nickel and cobalt can be separated from iron and iron red products obtained by oxygen pressure leaching. Through the experiments, the technical index were obtained as fellows: direct recovery of nickel, cobalt and iron being greater than 75%, 70% and 80%, respectively, from ore to nickel hydroxide (cobalt) products and nickel and cobalt grade of nickel hydroxide (cobalt) products being greater than 31%, 0.70%, respectively, the iron content of iron red being 62%, which met the requirement for the iron ore concentrate and can be sold as iron ore concentrate. The comprehensive recovery of nickel, cobalt and iron was achieved when adopted this process to treat laterite ore. This process has some advantages as fellows: high resource utilization efficient, environment-friendly, which can provide a process route of comprehensive recovering nickel, cobalt and iron from the laterite ore. |
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