【摘要】 用非氰试剂——碘从矿石中浸出黄金,目的是研究碘化浸金取代剧毒氰化物提金的可行性;采用了热力学方法对碘-碘化物溶金的可能性进行了简单分析,用碘-碘化物溶液对含炭难处理金矿石进行了浸出工艺条件实验及与氰化浸出的对比实验,取得了较理想的实验结果:浸出4h金浸出率达到95％,氰化法直接浸出12h金浸出率80％;碘化法浸金速度快,金浸出率高。更多还原

【Abstract】 Gold leaching from refractory Au ores using iodine and iodides was investigated. Thermodynamic analysis showed that the process is feasible. The technological parameters of iodine leaching were optimized. Comparing to the cyanidation process, iodine leaching gives better metallurgical performance, shorter leaching time and higher Au recovery. The Au recovery reached 95% after iodine leaching for 4 h, whereas the cyanidation process of 12 h gave a Au recovery of 80%.更多还原