硫化氢在湿法炼锌铟萃余液净化除砷的应用研究  

Research on the Application of Hydrogen Sulfide in Purification and Arsenic Removal of Wet Zinc Smelting Indium Extract

作　　者：方永水[1] FANG Yong-shui

机构地区：[1]金川集团股份有限公司镍冶炼厂,甘肃金昌737100

出　　处：《有色设备》2023年第3期31-35,共5页Nonferrous Metallurgical Equipment

摘　　要：甘肃省某锌冶炼厂铟回收的萃余液含砷浓度高,采用中和沉淀法脱除砷容易造成有价金属大量锌的损失。本文结合了硫化氢在有色行业内废酸治理去除高浓度砷的应用优势,开展了硫化氢硫化法工艺脱除该企业铟萃余液中高浓度砷的试验研究,结果表明:硫化氢硫化工艺可以实现铟萃余液中砷的可控脱除,硫化氢通入量越多,砷去除效率越高,硫化氢通入量为理论用量1.15倍时,二段硫化出水砷浓度可控制低于0.05 g/L,砷去除率高达99.63%,同时可以减少企业生产过程的锌的损失的问题,且可以产生一定的经济效益,因此具有一定应用前景。The concentration of arsenic in the indium extractant residue recovered from a zinc smelter in Gansu province is high,and the removal of arsenic by neutralization precipitation method will easily lead to the loss of a large amount of valuable metal zinc.In this paper,the application advantages of H2 S in the treatment of waste acid in nonferrous industry to remove high concentration arsenic are discussed,The results show that the controlled removal of arsenic from indium residue can be realized by H2 S curing process,the higher the hydrogen sulfide flux,the higher the arsenic removal efficiency,When the influent of hydrogen sulfide is 1.15 times of the theoretical dosage,the arsenic concentration in the secondary sul-phide effluent can be controlled below 0.05 g/L,and the arsenic removal rate is up to 99.63%,At the same time,it can reduce the loss of zinc in the process of production,and can produce certain economic benefits,so it has a certain application prospect.

关 键 词：硫化氢 气液硫化 湿法炼锌 铟萃余液 净化除砷 锌损失 

分 类 号：TF812[冶金工程—有色金属冶金]