Direct production of sodium stannate from Pb-Sn-Sb smelting slag was investigated by alkalinity leaching-purification-crystallization method.This process is simple,less strict to equipment and environment-friendly.Meanwhile,the recovery of tin is more than 90％ and quality of sodium stannate product reaches the national standard.Pb-Sb enriched leach residue and deleading sludge are returned to Pb smelting process.%采用碱性浸出-净化-结晶法用铅锡锑冶炼浮渣直接生产锡酸钠,流程简单,设备要求低,环境友好,锡的回收率大于90％,锡酸钠产品质量达到国家标准.铅锑浸出渣和除铅渣可直接返回铅熔炼系统.
展开▼
