摘要
用氯化法处理罗定铅阳极泥,先经酸浸选择性地浸出贱金属,银留在浸渣中,将浸渣通氨,银以Ag(NH3)_2^(+)转入溶液,然后用水合肼还原,获得99.8％银粉,银的直收率97％.
The lead anode slime in Luoding can be processed by chlorination. First, when the lead anode slime is leached with acid, cheap metals in it can be choicely leached out and silver in it stays in the solid part. Then the solid part is leached with NH3 in order that silver in it enter liquid phase in the form of Ag(NH3)_2^(+). Finally Ag from Ag(NH3)_2^(+) is reduced with N2H4, and the silver powder containing 99. 8% Ag can be obtained. The direct recovery of silver is 97%.
出处
《广东有色金属学报》
2002年第2期85-89,共5页
Journal of Guangdong Non-Ferrous Metals
