某砒霜厂历史遗留砷渣组成分析及浸出特性  

Composition Analysis and Leaching Characteristic of Arsenic Slag from an Abandoned Arsenic Factory

作　　者：张鸽 杨慧芬[2] 刘宽 林星杰 苗雨 谭海伟 张弛 ZHANG Ge;YANG Huifen;LIU Kuan;LIN Xingjie;MIAO Yu;TAN Haiwei;ZHANG Chi(BGRIMM Technology Group,Beijing 100160,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Zhangjiakou Ecological Environment Monitoring Center,Zhangjiakou 075031,Hebei,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]北京科技大学土木与资源工程学院,北京100083 [3]河北省张家口生态环境监测中心,河北张家口075031

出　　处：《有色金属（冶炼部分）》2023年第12期122-130,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2019YFC1803503)。

摘　　要：对广西某砒霜厂历史遗留砷渣进行组成分析及浸出特性研究。结果表明,供试砷渣为酸性渣,pH为3.36,主要重金属为As、Zn、Pb、Cu、Cd,总量分别为17404、2043、1459、1376、570 mg kg。重金属赋存矿物主要为含砷褐铁矾、臭葱石、砷铅铁矿、水砷铁铜石、锌铁尖晶石和铁闪锌矿等。砷渣中需稳定化处理的重金属为As、Zn、Cu、Cd,其硫酸-硝酸法浸出浓度分别为0.69、85.33、41.62、2.58 mg L,浸出液pH为3.65。砷渣自身具有较强的酸缓冲能力。要实现砷渣As、Zn、Cu、Cd的同步稳定化,需使用强碱性多功能复合稳定化材料。The component and leaching characteristic of arsenic slag from an abandoned arsenic factory sites in Guangxi were explored.The results indicate that the arsenic slag is acidic with pH value of 3.36 and its main pollutants include As,Zn,Pb,Cu and Cd,with the total content of 17404,2043,1459,1376 and 570 mg kg,respectively.The dominant heavy metal carrier minerals are arsenic-bearing jarosite,scorodite,carminite,arthurite,franklinite and marmatite and so on.The heavy metals need to be stabilized are As,Zn,Cu,Cd,with the leaching concentration of 0.69,85.33,41.62 and 2.58 mg L,respectively using sulphuric acid and nitric acid method,and the pH value of leachate is 3.65.The arsenic slag has a strong acid buffer capacity.To realize the synchronous stabilization of As,Zn,Cu and Cd in arsenic slag,it is necessary to use a multifunctional composite stabilization material with strong alkaline.

关 键 词：砷渣 重金属 组成 浸出特性 

分 类 号：X705[环境科学与工程—环境工程]