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。
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%.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2003年第6期501-503,523,共4页
Journal of University of Science and Technology Beijing
基金
国务院外国专家局资助项目(No.T000360062)
关键词
难处理金矿
碘化物
浸出率
氰化物
热力学
lean gold ore with charcoal
iodine
iodide, leaching
leaching ratio
