含砷氰化尾矿回填利用污染控制技术试验研究  

Experimental research on pollution control technology of arsenic-containing cyanide tailings backfilling and utilization

作　　者：叶锦娟 崔崇龙 张微 朱军章 翟菊斌 李家玮 Ye Jinjuan;Cui Chonglong;Zhang Wei;Zhu Junzhang;Zhai Jubin;Li Jiawei(Changchun Gold Research Institute Co.,Ltd.)

机构地区：[1]长春黄金研究院有限公司

出　　处：《黄金》2022年第4期87-90,共4页Gold

基　　金：吉林省科技发展计划资助项目(20190303027SF)。

摘　　要：针对某黄金生产企业含砷氰化尾矿污染特征,开展了搅拌洗涤法、臭氧氧化法、酸化溶砷法、铁盐固砷法等多种无害化方法联合处理试验研究,旨在将该含砷氰化尾矿处理至满足氰渣规范回填利用污染控制要求。结果表明:该含砷氰化尾矿回填利用污染控制技术工艺为压滤调浆搅拌洗涤+臭氧氧化+酸化溶砷+铁盐固砷,最佳参数为原矿浆压滤后加水调浆,矿浆浓度40%,臭氧投加量0.66 g/L,酸化溶砷pH值3、曝气量0.1 m^(3)/h、反应时间2 h,铁盐固砷七水合硫酸亚铁投加量20.0 g/L、反应时间1 h。研究结果为该黄金生产企业含砷氰化尾矿回填利用提供了技术支撑。According to the pollution characteristics of arsenic-containing cyanide tailings in a gold production enterprise,a variety of detoxification treatment tests were carried out jointly,such as stirring washing method,ozone oxidation method,acidified arsenic dissolution method,arsenic solidification by iron salt,in order that the treatment of arsenic-containing cyanide tailings meets the requirements for backfilling and utilization according to the"Technical specification for pollution control of cyanide leaching residue in gold industry".The results show that the process for the pollution control technology of backfilling and utilizating arsenic-containing cyanide tailings is stirring washing+ozone oxidation+acidified arsenic dissolution+arsenic solidification by iron salt.The optimal parameters were as follows:after the original ore slurry was filtered by filtration,water was added to adjust the slurry concentration to 40%,the dosage of ozone was 0.66 g/L,the pH value of acidified arsenic dissolution was 3,aeration amount was 0.1 m^(3)/h the reaction time was 2 h,the ferrous sulfate heptahydrate for arsenic solidification by iron salt was 20.0 g/L,the reaction time was 1 h.The results can provide technical support for backfilling and utilizing arsenic-containing cyanide tailings in the gold production enterprise.

关 键 词：含砷氰化尾矿 洗涤法 臭氧氧化法 铁盐固砷 回填利用 

分 类 号：TD926.4[矿业工程—选矿]