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| Research on Process Mineralogy of Refractory and Mixed Copper Ore in Zambia, Africa |
| Received:March 17, 2020 Revised:March 29, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1671-9492.2021.03.003 |
| KeyWord:mixed copper ore; combined copper; process mineralogy; beneficiation–metallurgy combination; recycling |
| Author | Institution |
| Bai Xu |
Kunming University of Science and Technology ,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization |
| Lin Yilin |
Kunming University of Science and Technology,Faculty of Land Resource Engineering |
| Wen Shuming |
Kunming University of Science and Technology ,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization |
| Liu Jian |
Kunming University of Science and Technology ,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization |
| Fang Jian |
Kunming University of Science and Technology ,State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization |
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| Abstract: |
| The copper grade of the Muliashi mixed copper ore in Zambia is 1.46%, and the oxidation rate of copper mineral is 76.92%. Among them, the proportion of refractory copper oxide combined is higher, which is 39.16%, which makes the ore recovery difficult. Process mineralogy research was carried out by microscopic observation and mineral parameter automatic quantitative analysis system (MLA). According to the study of process mineralogy, wrapping of copper oxide in iron mineral and iron-impregnated copper were found. The chrysocolla and malachite are wrapped with limonite and biotite and the disseminated grain size is fine, which makes the ore recovery difficult. According to the study results of process mineralogy, the suitable selection process was determined. The flotation closed circuit adopts a rough concentration, a concentration and a sweeping process. The copper concentrate grade was 29.89%, and the recovery efficiency was 30.56%. The flotation tailings adopts the warm acid leaching method, and the copper leaching efficiency was 82.19%. The copper resources in the refractory and mixed copper ore are efficiently recovered. |
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