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新疆哈图金矿的含金矿石,是一种以低硫化物含金石英为主、毒砂及黄铁矿矿化含金蚀变围岩为次的脉金矿,该矿石先经混汞提取大部分单体金后,予以浮选,可获得一含砷约5—6％的金精矿,该精矿经细磨后直接氰化,金浸率仅62％左右,本文所述工艺,拟将其预先焙烧后再行氰化,这样,金浸率可达92％以上,其氰化残渣含金也由原来的26克/吨降至5—6克/吨,从而大幅度提高了金收率,且通过焙烧,砷也能以白砷(As_2O_3)形态附带回收,达到综合利用资源的目的。
The gold-bearing ore of the Hatu gold deposit in Xinjiang is a vein-gold deposit mainly composed of low sulphide gold-bearing quartz and arsenopyrite and pyrite mineralized altered gold-bearing rocks. The ore is first mixed with amalgam After most of the monomer gold is extracted, flotation is performed to obtain a gold concentrate containing about 5-6% of arsenic. The concentrate is directly cyanidated after fine grinding and the gold impregnation rate is only about 62%. The process described in this article , It is intended to be roasted before cyanization, so that the gold-impregnation rate of up to 92%, the cyanide residue gold from the original 26 grams / ton down to 5-6 g / ton, which greatly increased The gold yield, and through the roasting, arsenic can also be white arsenic (As_2O_3) form incidental recovery, to achieve the purpose of comprehensive utilization of resources.