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| Analysis of Nickel Production Technology and Its Improvement Study |
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Received:March 12, 2013
Revised:March 12, 2013
Accepted:March 13, 2013
Published Online:May 21, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.06.001 |
| KeyWord:high grade nickel matte; pressure leaching; selective leaching; copper-nickel matte; refining |
| Author | Institution |
| 黄振华 |
北京矿冶研究总院 |
| linjiangshun |
北京矿冶研究总院 |
| wangzhong |
北京矿冶研究总院 |
| hedeli |
北京矿冶研究总院 |
| sulifeng |
北京矿冶研究总院 |
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| Abstract: |
| Analysis of nickel production technologies in China was carried out to find out problems and put forward the according improvements. Based on nickel refining technology of insoluble anode electrodeposition, sulfur was selectively precipitated with pressure leaching from atmospheric pressure leaching slag by adding calcining. The copper leaching residue was reduction smelted in electric furnace. The copper-nickel matte was paragraphing leached with recurrent liquid and anode solution from nickel electrowinning and copper electrowinning. In this way, the internal contradiction and defect in the existing process were eliminated. The new process adapts more to composition fluctuation of raw materials. The valuable metals are concentrated by stage and the recovery rates are improved. |
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