综合回收含镉铟高氯氧化锌的试验研究

Experiment Study on Comprehensive Recovery of Zinc Oxide Containing Cadmium,Indium and High Chloride

以含镉铟高氯的氧化锌为原料,开展了有效脱除氧化锌中有害元素氟、氯和铊,并综合回收有价金属锌、镉、铟研究。结果表明,经两段洗涤,氟、氯和铊的脱除率分别在89.6%以上、90%以上和80%左右,洗液经硫化钠沉铊得到回收;两段浸出,锌的浸出回收率可高达98%;中浸液经锌粉置换沉镉,所得海绵镉含镉87%以上,镉直收率可高达95%以上;铟的总回收率可达90%。

Using zinc oxide containing cadmium, indium, high chlorine as raw material, it carried out effective removal of harmful fluorine, chlorine and thallium from the zinc oxide, at the same time, comprehensively recoveried valuable metals zinc, cadmium and indium. The results show that the zinc oxide by the two washing, fluorine, and chlorine and thallium removal rate is above 89.6%, above 90% and about 80% respectively, the lotion of thallium by sodium sulfide sink thallium is recovered;Zinc leaching rate more than is 98% by the two leaching;Sponge cadmium in cadmium is more than 87% by zinc powder sink cadmium from the neutral leaching solution, and cadmium direct recovery rate can above 95% ;The total recovery rate of indium is up to 90%.