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METHOD FOR PRODUCING STANNOUS OXIDE, STANNOUS OXIDE, METHOD FOR PRODUCING Sn PLATING SOLUTION, AND METHOD FOR REMOVING IMPURITIES FROM SN PLATING SOLUTION
METHOD FOR PRODUCING STANNOUS OXIDE, STANNOUS OXIDE, METHOD FOR PRODUCING Sn PLATING SOLUTION, AND METHOD FOR REMOVING IMPURITIES FROM SN PLATING SOLUTION
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机译:生产氧化锡的方法,氧化锡,生产镀锡溶液的方法以及从镀锡溶液中去除杂质的方法
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摘要
The method of producing stannous oxide includes: a Sn ion-containing acid solution forming step (S01); a first neutralizing step (S02), which is a step of forming Sn precipitates by adding one or more of alkaline solutions of ammonium carbonate, ammonium bicarbonate, and aqueous ammonia to the Sn ion-containing acid solution to retain pH at 3-6 therein; a Sn precipitate separating step (S03); a Sn precipitate dispersing step (S04), which is a step of dispersing the separated Sn precipitates in a solvent liquid to obtain a dispersion liquid; and a second neutralizing step (S06), which is a step of forming SnO by adding an alkaline solution to the dispersion liquid of the Sn precipitates and then by heating, wherein Na, K, Pb, Fe, Ni, Cu, Zn, Al, Mg, Ca, Cr, Mn, Co, In, and Cd reside in the Sn ion-containing acid solution in the first neutralizing step (S02).
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