摘要
针对青海某高含泥、含砷碳微细浸染型难处理金矿石性质,在原矿工艺矿物学研究的基础上,开展了提金工艺探索试验。结果表明:采用浮选—浮选尾矿再磨预浮碳—CIL联合工艺,可获得较好试验指标,原矿磨矿细度-74μm占75.48%,浮选精矿金品位35.14 g/t、金回收率71.40%;浮选尾矿再磨细度-74μm占92.65%,预浮碳后进行CIL浸出,采用"绿金"环保提金剂,金浸出率50.06%,金综合回收率85.72%,试验指标与氰化钠浸金相当。
On account of the characteristics of one argillaceous,arsenic and carbonaceous microfine-particle disseminated refractory gold ore from Qinghai Province,experimental research to explore suitable gold extraction processes was carried out based on mineralogical study of primary ores. The results show that the combined process of flotation-flotation tailings regrinding and carbon pre-flotation-CIL can obtain good experimental index： grinding fineness of primary ores is 75. 48 %-74 μm,gold grade in flotation concentrates is 35. 14 g/t and gold recovery rate is 71. 40 %; regrinding fineness of flotation tailings is 92. 65 %-74 μm; the product goes to CIL after carbon pre-flotation; the gold leaching rate is 50. 06 % using ＂green gold＂environment-friendly gold leaching agent,and the gross recovery rate of gold is 85. 72 %. The experimental index are similar to sodium cyanide leaching.
出处
《黄金》
CAS
2018年第1期58-61,65,共5页
Gold
基金
青海省2016年创新平台建设专项基金(2016-GX-G02)
青海省科技支撑计划项目(2015-SF-122)
关键词
难处理金矿石
浮选
脱碳
CIL
环保提金剂
refractory gold ore
flotation
carbon removal
CIL
environment-friendly gold leaching agent
