利用锌渣制备一水硫酸锌

Preparation of Zinc Sulfate with Zinc-contained Fag-end

利用硫酸浸取含锌废渣,通空气氧化除铁、加稍过量锌粉置换除铜镉,制备了主含量≥98%、杂质含量符合要求的饲料级一水硫酸锌。具有浸出时间短、操作方便、生产成本低、杂质去除率高等优点。

Zinc-contained fag-end is immersed by sulfuric acid, and iron is removed by air oxidation, copper and cadmium arereplaced through addition of excessive zinc powder, thus producing feed degree ZnSO4·H2O with main content over 98%and impurity content meeting requirements of feed degress ZnSO4·H2O. It has the advantages of short time immersion, convenient operation, low production cost and high removal of impurity.