含碳金矿氧化焙烧—氰化法提金工艺研究  

Study on Gold Extraction from Carbon Bearing Ore by Oxidizing Roasting and Cyanidation Process

作　　者：董晓伟[1,2] 陈永明[1] 杨声海[1] 周晓源 DONG Xiao-wei CHEN Yong-ming YANG Sheng-hai ZHOU Xiao-yuan(School of Metallurgy and Environment, Central South University, Changsha 410083, China Changsha Engineering ~ Research Institute Ltd. of Nonferrous Metallurgy, Changsha 410083, China)

机构地区：[1]中南大学冶金与环境学院,长沙410083 [2]长沙有色金属设计研究院有限公司,长沙410083

出　　处：《有色金属（冶炼部分）》2016年第10期44-47,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金："十二五"国家科技支撑计划项目(2012BAC12B02)

摘　　要：采用氧化焙烧+氰化浸出工艺处理陕西某含碳金矿。优化的焙烧条件为680℃焙烧2h,氧化焙砂氰化浸出的最佳条件为:氰化钠浓度1 000g/t、浸出时间24h、物料粒度-0.074mm占90%以上,在此条件下金浸出率达86.91%,活性炭吸附金效率高,浸出过程是整个过程的限制环节。Oxidizing roasting and cyanidation leaching process were adopted to treat carbonaceous bearing gold ore from Shaanxi province. The optimum roasting condition is 680℃ for 2 h. The optimum cyanidation leaching conditions include concentration of NaCN of 1 000 g/t, leaching time of 24 h, and particle of roasted product of -0. 074 mm 90%. Under those conditions, leaching rate of gold is 86.91%, adsorption rate of gold is high and the limited step is leaching by CIP （Carbon in Pulp） method.

关 键 词：含碳金矿 回转窑 氰化浸出 炭浆法 

分 类 号：TF831[冶金工程—有色金属冶金]