CAJ | 학술논문

采用一段焙烧-酸浸-氰化工艺处理某复杂银精矿，结果表明：在焙烧温度923 K，焙烧时间2 h，酸浸反应液固比1.5∶1，反应pH值为0.8～1.0，反应温度368 K，反应时间1.5 h，氰化反应液固比2∶1，反应 pH值为10～11，NaCN浓度1.5‰，反应时间48 h条件下，氰化浸出时 Au、Ag的浸出率分别为72.01%、18.41%，尾渣银含量355 g/t.在复杂银精矿与其它矿样按一定比例重新配矿后，采用相同试验条件，氰化时Au、Ag的浸出率分别提高24.89%、15.66%，尾渣中银含量降低了223.35 g/t.
채용일단배소-산침-청화공예처리모복잡은정광，결과표명：재배소온도923 K，배소시간2 h，산침반응액고비1.5∶1，반응pH치위0.8～1.0，반응온도368 K，반응시간1.5 h，청화반응액고비2∶1，반응 pH치위10～11，NaCN농도1.5‰，반응시간48 h조건하，청화침출시 Au、Ag적침출솔분별위72.01%、18.41%，미사은함량355 g/t.재복잡은정광여기타광양안일정비례중신배광후，채용상동시험조건，청화시Au、Ag적침출솔분별제고24.89%、15.66%，미사중은함량강저료223.35 g/t.
Roasting-acid leaching-cyanided process is adopted to treat the complex silver concentrate. The result shows that the cyanide leaching rate of gold and silver are 72.01 % and 18.41 % respectively, with the silver content of 355 g/t in residue, under the condition that roasting temperature is 923 K with roasting time of 2 h, sulfuric acid leaching liquid-solid ratio of 1.5∶1, reaction pH value of 0.8~1.0, acid leaching temperature of 368 K with reaction time of 1.5 h, cyanided liquid-solid ratio of 2∶1with reaction pH value of 10~11, sodium cyanide concentration of 1.5 ‰ with reaction time of 48 h. Under the same conditions, when complex silver concentrate blended with other mineral secondary ore according to certain proportion, the cyanide leaching rate of gold and silver raises by 24.89 % and 15.66 % respectively. The silver content reduces by 223.35 g/t in residue.