铅锡锑冶炼浮渣的锡锑分离  

Separation of Tin and Antimony from Pb-Sn-Sb Smelting Slag

作　　者：杨玮娇[1,2] 刘勇[3] 王成彦[4] 赵峰[1] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]昆明理工大学冶金与能源工程学院,昆明650093 [3]湖南黄金集团,长沙410007 [4]北京科技大学冶金与生态工程学院,北京100083

出　　处：《有色金属（冶炼部分）》2016年第1期1-3,33,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划(863计划)项目(2012AA06A110)

摘　　要：采用碱性浸出技术对铅锡锑冶炼浮渣中的锡锑分离进行研究。试验表明,控制初始溶液NaOH浓度120~150g/L、浸出液固比L/S=2∶1、反应温度40℃、氧化剂加入量为物料量的3%~5%、反应时间2h的情况下,锡的浸出率可达到85%以上,而锑基本不浸出。富集了铅锑的浸出渣可直接返回铅锑合金熔炼系统,铅锡浸出液经结晶后得到含锡40.7%的锡酸钠。Separation of tin and antimony from Pb-Sn-Sb smelting slag was investigated by alkalinity leaching method.The results show that tin leaching rate is 85% above and antimony leaching rate is almost zero under the optimum conditions including initial concentration of NaOH of 120~150g/L,ratio of liquid to solid of 2∶1,temperature of 40℃,dosage of oxidizing agent of 3%~5%of raw materials,and leaching duration of 2h.Pb-Sb enriched leaching residue is returned to Pb-Sb alloy smelting process.Sodium stannate with40.7% Sn-containing is recrystallized from Pb-Sb leaching lixivium to realize recovery of tin.

关 键 词：铅锡冶炼浮渣 锡 锑 分离 碱性浸出 

分 类 号：TF812[冶金工程—有色金属冶金] TF814