从无铁渣湿法炼锌流程还原补锰液中萃取铟

Extracting Indium From Reduced Solution With Adding Manganese in the Hydrometallurgy of Zinc Without Producing Iron Residue

考察了P204对Fe2+,Mn2+,Zn2+及In3+的硫酸盐模拟溶液中各种金属离子的萃取性能,然后对真实溶液无铁渣湿法炼锌流程中高酸浸出液的还原补锰液中的铟进行萃取分离.确定了萃取分离铟的最佳条件为:(ⅰ)有机相组成分为30%P204+70%磺化煤油;(ⅱ)温度20℃±;(ⅲ)级数3级;(ⅳ)相比O/A=3∶1;(ⅴ)时间5min,在最佳条件下,铟的萃取率≥99.4%,P204对In3+,Zn2+,Mn2+3种金属的萃取饱和容量分别为54.0g·L-1,22.0g·L-1和2.0g·L-1,全流程铟的直收率达到77.58%,总回收率≥95.0%,比传统提取铟流程回收率提高20%以上.

The extraction of the cations such as Fe^(2+),Mn^(2+),Zn^(2+)and In^(3+) in the simulated sulfate solution by P_(204) has been examined from a technology solution-reduction solution with adding manganese,that was obtained by reduction of the high leached solution in the hydrometallurgy of zinc without iron residue.The optimum separation conditions have been determined as:(1) component of the organic phase being 30% kerosene+ 70% sulfidized kerosene,(2) extraction temperature being 20 ℃,(3)progressions being 3,(4) ratio of O/A being 3∶1,and(5) extration time being 5 min.Under the optimum extraction conditions,the extration rate of indium is not less than 99.4%.the saturated capacities of P_(204) on In^(3+),Zn^(2+) and Mn^(2+)were measured for 54.0 mg·mL^(-1),22.0 mg·mL^(-1) and 2.0 mg·mL^(-1)respectively.The direct recovery rate of indium for the whole flow sheet arrived at 77.58% and the total recovery rate reached 95.0%,In comparision with the traditional flow sheet the total recovery rate of indium was higher than 20%.