考察了高岭土、绿泥石、白云石和褐铁矿4种常见易泥化矿物对氰化浸出过程的影响,发现褐铁矿和白云石在细磨时形成的次生矿泥比原生矿泥具有更强的吸附已溶金能力,使浸出率降低.研究了原矿经粗磨-磁选后易泥化矿物的分布,对云南某金铁氧化矿采用"粗磨-分类磁选-分组氰化浸出"的新工艺,有效减少了次生矿泥的生成,与"细磨-氰化浸出-磁选"的传统工艺相比,金浸出率由85.26%提高到93.05%,铁精矿回收率由41.20%提高到70.86%.
The influence of four common clay minerals, kaoline, chlorite, dolomite and limonite, on gold cyanidation were investigated. The results indicated that the adsorption contributed to the total loss of gold for the over-grinded limonite and dolomite clays. The distribution of the clay minerals after coarse grinding and magnetic separating process was tested. A novel combination process involving coarse grinding, classifying by magnetic separation, leaching, was proposed to eliminate the adverse effects of secondary slimes. Compared with the traditional process of fine grinding-cyanidation-magnetic separation, this new technique increased the gold extraction rate from 85.26% to 93.05% and the iron recovery rate from 41.20% to 70.86%.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%