Modern Mining ›› 2024, Vol. 40 ›› Issue (03): 136-139.
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In order to solve the problems that qualified copper concentrate can not be obtained in roughing 1 operation after the abnormal change of smelting slag type in a copper company of Anhui，the copper loss of copper tailings is high，and the copper flotation index is significantly reduced，copper con⁃ centrate with qualified copper grade can be obtained preferentially by adding water glass to suppress sili⁃ cate in roughing 1 operation. The addition of sodium sulfide in the roughing 2 operation of the stage grind⁃ ing stage sorting process can increase the floating rate of subsequent copper minerals and reduce the copper loss of the copper tailings.The test results show that under the condition of second-stage grinding fineness of -0.045 mm98.3%，copper concentrate with copper grade of 20.78% and copper recovery of 85.46% can be obtained by flotation，and the copper tailings contain 0.251% copper. The product meets the require⁃ ments of copper smelting，and the test index is good.
