高铜载金炭脱铜技术研究及应用  

Research on copper removal from high copper content gold-loaded carbon and its application

作　　者：陈淑萍[1,2] 王春[1,2] 刘亚建[1] 赖桂华[1] 衷水平[1,2] 伍赠玲[1,2] 王世辉[1] 简伟峰 

机构地区：[1]紫金矿业集团股份有限公司 [2]低品位难处理黄金资源综合利用国家重点试验室

出　　处：《黄金》2015年第12期52-56,共5页Gold

摘　　要：为解决紫金山金铜矿选矿厂产生的高铜载金炭对提金生产造成的不利影响,采用氰化脱铜-堆浸末期降铜工艺进行了除铜试验研究及生产实践。其结果表明:小型氰化脱铜试验铜脱除率可达9l%以上;氰化脱铜-堆浸末期降铜工业生产实践中,为降低生产成本,脱铜率达50%以上即可,此时已满足解吸金的指标要求,其高铜载金炭铜品位由20 g/kg以上降到10 g/kg以下,脱铜载金炭高温高压解吸金的解吸率达到97.5%以上,脱金炭金品位基本降至0.1 g/kg以下;其堆浸末期降铜技术的应用,较好地解决了脱铜液难处理的问题。该工艺具有成本低、投资少、操作简单、效益显著等优点。To deal with the adverse effect high copper content gold-loaded carbon imposes on gold production in the ore-dressing plant of Zijinshan Gold Copper Mine,a process of copper removal by cyanidation and copper reduction in the terminal stage by heap leaching is carried out to perform the experimental research on copper removal and production practice. The results show that bench scale copper removal tests by cyanidation can reach a copper removal rate of more than 91 %; the practice of copper removal by cyanidation and copper reduction in the terminal stage by heap leaching is able to cut production cost once the copper removal rate reaches 50 % which is qualified for gold desorption. The copper grade in high copper content gold-loaded carbon decreases from more than 20 g / kg to less than10 g / kg. The gold desorption rate of treated gold-loaded carbon under high temperature and pressure reaches more than 97. 5 % and the gold grade in the carbon after gold deprivation decreases to lower than 0. 1 g / kg; the technique of copper reduction in the terminal stage by heap leaching solves the problem of copper deprived solution treatment.The process has the advantages of low cost,less investment,easy operation and vast sum of profits.

关 键 词：高铜载金炭 脱铜 堆浸末期降铜 应用 

分 类 号：TD952[矿业工程—选矿]