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通过对混合电位模型的研究 ,提出了铊离子对金氰化溶解只有在辅以阴极强化的条件下才具有显著强化作用的观点。以某硫化物金精矿为对象进行的强化氰化浸出试验表明 ,不加入辅助氧化剂时 ,铊离子对氰化浸金的强化作用并不显著 ;加入H2 O2作为辅助氧化剂时 ,取得了显著提高金浸出率的效果。对于常规氰化浸出 48h只有 5 4.89%金浸出率的金精矿 ,采用铊离子和H2 O2 协同强化时 ,经过一段 4h、二段 12h总共 16h的两段浸出 ,即可达到 92 %以上的金浸出率
Based on the study of the mixed potential model, it is proposed that thallium ions have a significant strengthening effect on gold cyanide dissolution only under cathodic strengthening. The intensified cyanidation leaching experiments conducted on a sulfide gold concentrate show that the strengthening effect of thallium ion on cyanide leaching of gold is not significant when the secondary oxidant is not added; when H2O2 is added as a secondary oxidizer, a significant increase is obtained Effect of gold leaching rate. For conventional gold leaching 48h only gold leaching rate of 4.89% gold, using thallium ions and H2O2 synergistic, after a period of 4h, 12h 12h total 16h two leaching, you can reach more than 92% of the gold Leaching rate