从贫化炉水淬渣中氨浸提铜试验研究

摘要

研究了用氨水从贫化炉水淬渣中浸出铜。结果表明：水淬渣经振动研磨至粒度小于－0．147mm，在70℃下浸出4．0h，控制氨水质量浓度60g／L，液固体积质量比10mL∶1g，搅拌速度500r／min，碳酸铵添加量4g／10g铜渣，结果铜浸出率为45％，氨浸液中铜的硫化钠沉淀率为89％。方法简单易行，铜回收率较高。%Recovery of copper from water quenched pyrometallurgical cleaning slag by ammonia leaching was studied .The results show that the maximum leaching rate of copper is 45% and precipitation rate of copper is 89% at the optimum conditions of 70 ℃ ,leaching time of 4 hours , ammonia concentration of 60 g/L ,liquid‐to‐solid ratio of 10 mL∶1 g ,stirring speed of 500 r/min and ammonium carbonate addition of 40% to the slag .Copper is recoveried by leaching and followed precipitation .T he process is simple ,copper recovery efficiency is better .