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随着银的价格的大幅度提高,对低品位含银矿物引起极大的兴趣。美国矿山局对这类矿石曾做过试验,一般用氰化法处理难选矿石中的银,其回收率约60%。但据报导,用氯化介质浸出,银回收率可达95%以上。样品在瓷制球磨机中湿磨至75%-95微米,滤去矿浆,对滤饼进行干燥。处理后的样品用氯化钠溶液进行短时间的浸出,经固液分离,银呈金属沉淀,溶液返回
With the substantial increase in the price of silver, a great deal of interest has been placed on low-grade silver-bearing minerals. The US Bureau of Mines has conducted tests on this type of ore. Generally, cyanidation is used to treat silver in the refractory ore and the recovery rate is about 60%. However, it has been reported that leaching with chlorinated media can achieve silver recoveries of over 95%. Samples were wet milled to 75-95 microns in a porcelain ball mill, the slurry was filtered off and the filter cake was dried. Treated samples with sodium chloride solution for a short period of leaching, the solid-liquid separation, silver was a metal precipitate, the solution returned