Process Study on the Recovery of Copper and Zinc from Acid Leaching High Copper Furnace Slag by Ammonia Leaching Process
This paper uses the acid leaching high copper slag after sulfuric acid leaching as raw material,ammonia-ammonium solution as ammonium leaching agent,and the leaching rate of copper and zinc elements in acid leaching high copper slag as the index. The optimized conditions were:leaching time of 12 h,leaching temperature of 30℃,initial con-centration of ammonia 7.8 mol·L-1,initial concentration of ammonium carbonate 1.31 mol·L-1,stirring rate of 200 r/min,the leaching rate of copper and zinc from acid leaching high copper slag could reach 89.77% and 90.64% under this opti-mized condition.
acid leaching high copper slagammonia leachingammonium carbonatecopperzinc