采用P204对冶炼厂低品位锌烟尘的浸出液进行萃取试验。结果表明,采用P204三级逆流萃取,锌萃取率为53.7%,反萃率大于99%;中浸液中的杂质砷、锑、镉、镍、氟、氯留在萃余液中,降低了杂质的处理成本。
Extraction with P204 from leaching solution of low grade zinc oxide dust was investigated.The results show that zinc extraction rate of three-stage countercurrent extraction is 53.7% and back extraction rate is 99% above.Impurities of arsenic,antimony,cadmium,nickel,fluorine,and chlorine in neutral leaching solution are blocked in extraction raffinate.As a result,treatment cost of purification is reduced compared with traditional process.