The concentrator of a company mainly selects the copper smelting slag from the upstream copper smelter,mainly recy-cling the copper from the copper slag.Through analysis,the main useful metal element in the copper slag is Cu,containing small amounts of Au and Ag,with contents of 2.03%,0.39 g/t,and 25.39 g/t,respectively.The gangue mainly contains Fe2O3and SiO2.The best grinding fineness,flotation concentration,collector type and dosage are determined by experiment to ensure the best flotation conditions.Using T-338 and xanthate ascollector,the 2#oil as the foaming agent in the final closed-circuit test,the test ob-tained the grade of copper concentrate of 25.32%,and the grade of tailings was reduced to 0.27%,and the copper recovery rate was 87.56%.
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