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| Pre-classification and flotation experiment of a low grade copper mine |
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Received:March 06, 2021
Revised:March 10, 2021
Accepted:March 15, 2021
Published Online:May 13, 2021
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| DOI： |
| KeyWord:Low grade copper ore; Flotation; Overgrinding; Pre-classification |
| Author | Institution |
| HE Mei-li |
Zijin Mining Group Co. Ltd. |
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| Abstract: |
| Overgrinding of copper minerals is one of the causes of copper loss during flotation. The process of pre-classifying - coarse-grained grinding-combined reflotation can reduce the generation of -10μm refractory slime in the grinding process to a certain extent,and reduce the copper loss of -10μm in flotation,so as to improve the recovery of copper.In this paper, a comparative experiment was carried out between the mine mill direct grinding flotation of a low grade copper feed and the mill feed pre-classified-coarse-grained grinding-combined re-flotation. Closed circuit experiment results show that the control of the copper grade of copper concentrate is quite, mill feed directly grinding flotation of copper recovery rate was 89.87%, the mill feed graded in advance - grade coarse grinding - merger and flotation of copper recovery rate was 91.19%, which is 1.32% higher. |
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