难浸金精矿低温成型焙烧-氰化浸出新工艺试验研究

通过热应力和热力学破坏,利用包裹金矿粒内部缺陷,诱发裂纹裂隙生成,或利用沿晶间和相界的腐蚀氧化而产生浸出剂作用通道,在低温低氧势和低硫氧化率下,达到获得高的金氰化浸出率的预处理目的。

Experimental study on low temperature extrusive roast pretreatment of refractory gold concentrate followed by cyanide leaching

Through breakdown by thermal stress and thermodynamics and making use the inherent defects in the grains of inclusion gold,the fissure and crackle are induced to take place.Moreover,it can use the corrosion nd oxidation along crystal and phase boundary to produce diffusing passage of leaching agent.Thus,under the condition of low sulphide oxidized rate,the gold are fully"exposed" and can be well recovered by cyanide leaching.