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本法用湿法流程从铜电解精炼的阳极泥中回收银,阳极泥中除含 Ag 外,还含有 Se,Te,Pb,Sb,Sn,As,Bi,Zn,Cu,Ni,Fe,Au 及铂族金属。方法分为6个工序:工序1.在固液比=1公斤∶1升的条件下,将阳极泥悬浮在盐酸溶液中,强烈搅拌,并通入氯气氯化。由于反应放热,使混合物的温度上升到沸点(100~112℃)。使用回流冷却器,可将 HCl 的浓度提高到8~9N 以上。在氯化过程中,全部银和铅、锑、锡
This method uses a wet process to recover silver from the anode slime of electrolytic copper electrolysis, which contains Se, Te, Pb, Sb, Sn, As, Bi, Zn, Cu, Ni, Fe, Au And platinum group metals. The method is divided into six steps: Step 1. In the solid-liquid ratio = 1 kg: 1 liter conditions, the anode slurry was suspended in hydrochloric acid solution, stirred vigorously, and the introduction of chlorine chloride. As the reaction is exothermic, the temperature of the mixture rises to the boiling point (100-112 ° C). The use of reflux cooler, HCl concentration can be increased to 8 ~ 9N above. In the chlorination process, all silver and lead, antimony, tin