| abstract |
The invention provides a method for recovering valuable metals in copper slag. The recovery method comprises: roasting copper slag, chlorinating agent and wave absorbing material under microwave conditions to obtain roasting slag and roasting flue gas, wherein during the roasting process, the microwave frequency is 2450MHz and the microwave power is 2-75KW; The roasting flue gas is subjected to a precipitation reaction with a flue gas absorbent and a metal ion precipitation agent to obtain a metal precipitate, wherein the flue gas absorbent is water or an alkaline aqueous solution. By adopting the above method, the iron element and other valuable metal elements in the copper slag can be effectively separated, and then targeted treatment can be carried out to achieve the effect of greatly improving the recovery rate of the valuable metal in the copper slag. In addition, the above recovery method has the advantages of wide adaptability to copper smelting slag, simple process flow and high recovery rate of valuable metals. |