菱铁矿尾矿处理硫化砷渣与含砷污酸方法与机理研究  

Study on the methodology and mechanisms of siderite tailings for treatment of arsenic sulfide slag with arsenic waste acid

作　　者：苏欣荣 苏瑞 王翼巽 陈佳 马旭 史美玲 SU Xinrong;SU Rui;WANG Yixun;CHEN Jia;MA Xu;SHI Meiling(College of Civil Engineering and Architecture,Liaoning University of Technology,Jinzhou 121001,China;Department of Environmental Science and Technology,Dalian Minzu University,Dalian 116600,China;Liaoning Ecological Environment Protection Science and Technology Center,Shenyang 110015,China)

机构地区：[1]辽宁工业大学土木建筑工程学院,辽宁锦州121001 [2]大连民族大学环境与资源学院,辽宁大连116600 [3]辽宁省生态环境保护科技中心,辽宁沈阳110015

出　　处：《应用化工》2024年第6期1280-1283,1289,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(42207258);辽宁省自然科学基金项目(2022-BS-312);辽宁工业大学博士科研启动基金项目(XB2021013)。

摘　　要：以菱铁矿尾矿为铁源,以含砷污酸为中和试剂,开展了菱铁矿尾矿处理硫化砷渣与含砷污酸研究。结果表明,在污酸投加量V(硫化砷渣)/V(污酸)为1∶2,Fe/As摩尔比为3,水热温度140℃下反应14 h,As的去除率可达99.59%,TCLP浸出As浓度仅为0.10 mg/L。A study on the siderite tailings for treatment of arsenic sulfide slag with arsenic waste acid by utilizing siderite tailings as an iron source and arsenic-containing acidic waste acid as a neutralizing agent.The results showed that the removal efficiency of As reached up 99.59%,and the TCLP leached concentration of arsenic was only 0.10 mg/L with arsenic waste acid dosage V(ASS)/V(WSA)of 1∶2,Fe/As molar ratio of 3,and hydrothermal temperature of 140℃for 14 h.

关 键 词：菱铁矿尾矿 臭葱石 硫化砷渣 含砷污酸 

分 类 号：TQ13[化学工程—无机化工] X756[环境科学与工程—环境工程] X52