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3.直接炭浸工艺(CIL)处理Mec-rur的难处理金矿如前所述美国金Mecrur矿是呈细粒浸染金与硫化物矿和有机碳相伴生的难处理矿,含金平均品位5.90克/吨。试样呈暗色至浅灰色,且具有损耗合金溶液的特性。经过一系列工艺流程选样试验表明:直接氰化浸出金提取率在0～100％,说明该矿虽然有难处理矿但并不能全部划为难处理金矿;浮选法金精矿金回收率只有40％,这是因为有大量浸染状有机碳和极细颗粒的硫化物矿所致;予先在500℃焙烧处理金提取率可在90％以上,但金有明显地被重新吸附的趋势且为满足环保要求使焙烧设备
3. Direct carbon leaching process (CIL) Treating Mec-rur refractory gold As mentioned earlier, the United States Gold Mecrur mine is finely grained gold and sulfide minerals and organic carbon associated with refractory ore, the average gold content 5.90 g / t. Specimens are dark to light gray and have the property of depleting the alloy solution. After a series of process sample selection experiments show that: direct cyanide leaching gold extraction rate of 0 ~ 100%, indicating that although the mine is difficult to mine, but not all classified as refractory gold; flotation gold recovery method gold Only 40% due to a large amount of sulphide ore with heavily disseminated organic carbon and very fine particles. The gold extraction rate above 500 ° C can be above 90%, but the tendency of gold to be clearly re-adsorbed And to meet the environmental requirements of roasting equipment