有色冶金含砷废渣与乙炔电石渣共处理方法与机理研究  

Study on method and mechanism of co-treatment of arsenic-bearing metallurgical waste residue and calcium carbide residue

作　　者：徐淼 苏瑞 郝代龙 马誉银 马旭 李剑 XU Miao;SU Rui;HAO Dai-long;MA Yu-yin;MA Xu;LI Jian(School of Civil and Architectural Engineering,Liaoning University of Technology,Jinzhou 121001,China;College of Environment and Resources,Dalian Minzu University,Dalian 116600,China;Jinzhou Water(Group)Company Limited,Jinzhou 121000,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]锦州水务(集团)有限公司,辽宁锦州121000

出　　处：《现代化工》2025年第4期110-115,123,共7页Modern Chemical Industry

基　　金：国家自然科学基金项目(42207258);辽宁省教育厅高校基本科研项目(JYTMS20230857);2022年辽宁省研究生联合培养示范基地项目(YJD202204)。

摘　　要：以铁砷渣为铁源、电石渣为中和剂,建立了一种臭葱石沉淀与氢氧化物中和沉淀的协同处理技术,用于同时处理有色冶金废渣(砷钙渣和铁砷渣)与乙炔电石渣。结果表明,控制pH为0.6、Fe/As摩尔比为1.2、反应温度为140℃、反应时间为10 h条件下,通过臭葱石沉淀法可实现As的高效去除;利用电石渣中和至pH 9.0,在实现高效去除重金属离子的同时进一步提高了As的去除率,最终As、Cd、Cu、Pb和Zn的去除率均超过99%,固相产物的环境稳定性也满足国家监管限值要求。A co-treatment technology combining scorodite precipitation and hydroxide neutralization precipitation is proposed,using iron-arsenic residue as the iron source and calcium carbide residue as the neutralizing agent.This method is developed to simultaneously treat with arsenic-calcium residue and iron-arsenic residue from nonferrous metallurgy,along with calcium carbide residue.Experimental results show that arsenic can be efficiently removed via scorodite precipitation method under the optimized conditions such as a pH of 0.6,a Fe/As molar ratio of 1.2,a reaction temperature of 140℃,and a reaction time of 10 hours.The remained metallurgical residue is neutralized with calcium carbide slag to pH=9.0,which achieves efficient removal of heavy metal ions and further enhances the removal rate of arsenic.Ultimately,the removal rates of As,Cd,Cu,Pb,and Zn all exceed 99%,and the environmental stability of the solid-phase products also meets China.s national regulatory limit.

关 键 词：砷钙渣 铁砷渣 电石渣 臭葱石 中和沉淀 

分 类 号：X75[环境科学与工程—环境工程] X52