Comprehensive Recovery of a Low-Grade Silver-Lead ore in Henan Province
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摘要: 针对河南某低品位含铅银矿生产中存在银回收率低、精矿铅品位低的问题进行了选矿综合回收试验研究。在工艺矿物学研究的基础上,试验采用硫化浮选+氰化浸出工艺综合回收银和铅,最终获得的分选指标为:浮选精矿Ag品位7024 g/t,Ag回收率76.00%;Pb品位13.03%,Pb回收率55.63%,铅可以计价回收。浮选尾矿进行氰化浸出后可回收16.71%的Ag,最终Ag的总回收率为92.71%。Abstract: In order to resolve the problems of low Ag recovery and low Pb grade, existing in the production of a low-grade silver-lead ore in Henan Province, the process of “sulphidizing flota-tion-cyanidation leaching”, based on the mineralogical characteristics, was adopted.The flotation concentrates with the grade of 7 024 g/t Ag and 13.03%Pb were obtained, in which the Ag recov-ery was 76%and the Pb recovery was 55.63%.Other 16.71%Ag was further recovered from tail-ings leaching, and then the total Ag recovery reached 92.71%.
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