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目前,国内外生产高纯锡的方法,多采用“Na_2SO_4-H_2SO_4-SnSO_4”重复电解后,经“区域熔炼”或“真空熔炼”的流程,以制取五个“九”的高纯锡,也有用“化学-物理”方法制取“五九”锡的。但
At present, the methods of producing high-purity tin both at home and abroad adopt the process of “Na_2SO_4-H_2SO_4-SnSO_4” repeated electrolysis by “zone melting” or “vacuum melting” to prepare five “nine” high purity tin, - “physical” method to make “five nine” tin. but