Sustainable Mining and Metallurgy

By combining with the production practice of copper smelting slag beneficiation of different stages in a certain company, analysis was made of the rationality of different beneficiation process flows for treating electric furnace slag, converter slag and mixed slag. As was shown in the analysis results, it was beneficial to the improvement of slag beneficiation indexes that the two-stage continuous milling and flotation process was adopted for electric furnace slag with low copper grade and fine copper mineral particle size, and the staged milling and flotation process for converter slag and mixed slag with high copper grade and uneven copper mineral particle size. At the same time, the relevant data in the current mixed slag beneficiation was analyzed. In view of the existing analysis of low recovery rate of the second roughing operation, large circulation of middlings, low enrichment ratio and recovery rate of concentrate operation, and suggestions were made on the specific measures such as strengthening on-site fine milling, high concentration flotation, etc.