含铜难处理金矿选择性浸出试验研究  

Experimental study on selective leaching of refractory gold ores

作　　者：袁喜振 李绍英[1] 赵留成[1] 康金星[1] 孙春宝[1] 李根壮[1] 张炜[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国科技论文》2014年第3期351-354,共4页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20100006110003)

摘　　要：针对某含铜难处理金矿进行了碘化法和石硫合剂(lime sulfur synthetic solution,LSSS)法的选择性浸金的研究。结果表明,在碘单质质量浓度为8g/L,浸出时间为2h的条件下,碘化法浸出金的浸出率为88.1%,而且铜的浸出率不足1%。在石硫合剂质量分数为25%,浸出时间为6h的条件下,LSSS法浸出金的浸出率仅为73.5%。对比碘化浸出和石硫合剂浸出效果可知,碘化法对该含铜难处理金矿不仅浸出速度快、浸出率高而且铜几乎不被浸出,具有很强的选择性浸金作用。A research of selective gold leaching was carried out on a copper-bearing refractory gold ore with iodine-iodide leaching and LSSS （lime-sulfur-synthetic-solution） leaching methods. The results showed that under the conditions of initial iodine mass concentration of 8 g/L and leaching time of 2 h, the gold leaching rate can reach 88.1~, while the leaching rate of copper is less than 10~ with the iodine-iodide leaching method. Whereas the gold leaching rate is 73.50/oo with LSSS leaching method under the conditions of an initial mass fraction of LSSS 250/oo and the leaching time of 6 h. Compared with L^SS leaching method, the io- dine-iodide method can not only obtain a high leaching rate of gold, but also achieve the purpose of little copper leaching with a good selectivity.

关 键 词：含铜难处理金矿 碘化法 LSSS法 选择性浸出 

分 类 号：TF831[冶金工程—有色金属冶金]