从镀锌废水、火法炼锌炉渣、有色冶金中的硫化锌废渣中回收锌,是由沉淀—转化—浸出—净化—锌产品制取等工序组成的。 (一) 沉淀 鉴于镀锌行业分布广、方法多、水量大、浓度低的特点,故采用硫化物沉淀法。将镀锌废水贮集于水池内,调整pH=3.0后,加入硫 Recovery of zinc from zinciferous wastewater, pyrolyzite slag, and zinc sulphide waste in nonferrous metallurgy is made up of processes such as precipitation-conversion-leaching-purification-zinc production. (A) precipitation In view of the zinc industry is widely distributed, multi-method, large amount of water, low concentration characteristics, so the use of sulfide precipitation method. The galvanized wastewater storage in the pool, adjust the pH = 3.0, adding sulfur