制取五个九的高纯铊,国外使用沉淀法、多级电解法、汞齐电解法、乙醚或异丙醚的萃取法。为了保证达到纯度的要求,有时在水溶液电解或汞齐电解之后,还要进行区域熔炼。国内沈阳冶炼厂早在1966年对汞齐电解法和乙醚萃取法做过研究,他们考虑到汞齐电解法有流程长、成本高、质量不 Preparation of five nine high purity thallium, the use of precipitation abroad, multi-stage electrolysis, amalgamation, ether or isopropyl ether extraction. In order to ensure the purity requirements, sometimes in the aqueous solution electrolysis or amalgam electrolysis, but also for regional melting. As early as 1966, the Shenyang Smelter in China conducted research on amalgamation electrolysis and ether extraction. They considered that amalgamation has the advantages of long process, high cost, and poor quality