CAJ | 학술논문

采用焙烧-酸浸-氰化工艺从高硫多金属金精矿中提取金、银、铜。其试验结果表明：在最佳条件下，金、银、铜的平均浸出率分别可达到96．56％、79．12％、91．33％。通过对比金精矿、焙砂、氰化渣中金、银的化学物相可知，硅酸盐包裹金、银不易被氰化浸出，而加入复合添加剂焙烧，硅酸盐包裹的金、银品位大幅度下降，由直接焙烧的2．05 g／t、163．35 g／t分别降到0．81 g／t、25．24 g／t。
채용배소-산침-청화공예종고류다금속금정광중제취금、은、동。기시험결과표명：재최가조건하，금、은、동적평균침출솔분별가체도96．56％、79．12％、91．33％。통과대비금정광、배사、청화사중금、은적화학물상가지，규산염포과금、은불역피청화침출，이가입복합첨가제배소，규산염포과적금、은품위대폭도하강，유직접배소적2．05 g／t、163．35 g／t분별강도0．81 g／t、25．24 g／t。
Gold ,silver and copper are extracted from high-sulfur content and polymetallic gold concentrates by roasting-acid leaching -cyanidation process .It is revealed that under optimal conditions the leaching rates of gold , silver and copper were respectively were 96.56%,79.12%and 91.33%.By comparing the chemical phase of gold and silver in gold concentrates ,calcines and cyanidation slags ,it is known that the gold and silver encapsulated in sili-cates are difficult to leach by cyanide ,but with composite additive in roasting ,the amount of gold and silver encapsula-ted in silicates is greatly reduced obviously ,from 2.05 g/t,163.35 g/t respectively to 0.18 g/t,25.24 g/t.