砷酸钙渣水泥固化的实验研究  

Experimental Study on Cement Solidification of Calcium Arsenate Slag

作　　者：庞博 李瑞冰 马雁鸿 张启旭 杨大锦 卢文鹏 于三三[1] PANG Bo;LI Ruibing;MA Yanhong;ZHANG Qixu;YANG Dajin;LU Wenpeng;YU Sansan(Shenyang University of Chemical Technology,Shenyang 110142,China;Yunnan Chihong Zn&Ge Co.,Ltd,Yunnan 655011,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142 [2]云南驰宏锌锗股份有限公司,云南曲靖655011

出　　处：《沈阳化工大学学报》2023年第5期421-424,共4页Journal of Shenyang University of Chemical Technology

摘　　要：未经处理的砷酸钙渣暴露在自然环境中,与酸发生反应并释放出不同价态的砷酸根离子进入土壤或河流,对环境造成污染.本研究采用水泥固化法对云南某企业的砷酸钙渣进行固化处理,对水泥与砷酸钙渣不同质量比的固化效果进行了研究.通过对固化体进行毒性浸出测试和抗压检测发现:固化体毒性浸出值不大于1 mg/L,小于国家标准要求1.2 mg/L;固化体抗压强度均大于10 MPa,符合国家对于含砷废渣的安全填埋或堆积的要求.When untreated calcium arsenate slag is exposed to the natural environment,it can reacts with carbon dioxide and releases arsenate ions with different valence into the soil or river,and causes environmental pollution.In this study,cement solidification was used to solidify the calcium arsenate slag which provided by an enterprise in Yunnan.The cement solidification effect of calcium arsenate slag with different mass ratio was studied.By the compression test and toxicity leaching test,it is found that the toxicity leaching value of the solidified body is not more than 1 mg/L,which is lower than the national standard requirment of 1.2 mg/L.The compressive strength of the solidified body is more than 10 MPa,which meets the national requirements for safe landfill or accumulation of arsenic containing waste residue.

关 键 词：砷酸钙渣 水泥固化 浸出质量浓度 

分 类 号：TQ126.41[化学工程—无机化工]