固废基胶凝材料固化稳定化某铜矿重金属尾矿试验  

Test of Solidification and Stabilization of Heavy Metal Tailings from a Copper Mine with Solid Waste Based Cementitious Materials

作　　者：刘龙 华绍广[1,2,3] 杨晓军 李书钦[1,2,3] LIU long;HUA Shaoguang;YANG Xiaojun;LI Shuqin(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mine;Huawei National Engineering Research Center of High Efficiency Cyclic Uti-lization of Metal Mineral Resources Co.,Ltd.)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,安徽省马鞍山市243000 [2]金属矿山安全与健康国家重点实验室 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司

出　　处：《现代矿业》2022年第9期9-12,共4页Modern Mining

基　　金：十三五国家重点研发计划项目(编号:2018YFC1801702-03);安徽省科技重大专项项目(编号:201903a07020010)。

摘　　要：为了实现铜矿重金属尾矿的固化稳定化,针对云南某铜尾矿重金属无害化处置要求,利用研制的固废基胶凝材料胶结固化该铜矿全尾砂,检测固化体各龄期无侧限抗压强度、28 d重金属浸出毒性,以考察胶凝材料的胶结充填性能和重金属固化稳定化性能。试验结果表明:固废基胶凝材料抗压强度高,满足矿山充填采矿工艺技术要求,28 d固化体重金属浸出浓度低于GB3838—2002中Ⅳ类水体限值,可消除尾矿中重金属对环境的危害隐患。该固废基胶凝材料以矿渣、钢渣、脱硫石膏等工业固废为主材,成本低、性能高、应用范围广,实现了固废资源化利用,工业化推广前景广阔。In order to realize the solidification and stabilization of heavy metal tailings in copper mine,according to the requirements of harmless disposal of heavy metals in a copper mine tailings in Yun⁃nan,the whole tailings of copper mine were cemented and solidified by using the developed solid waste-based cementitious material.The unconfined compressive strength of the solidified body at each age and the leaching toxicity of heavy metals at 28 d were tested to investigate the cemented filling performance of the cementitious material and the solidification and stabilization performance of heavy metals.The test results show that the compressive strength of solid waste-based cementitious materials is high,which meets the technical requirements of mine filling mining technology.The leaching concentration of 28 d solidified weight metal is lower than the Class IV water limit in GB3838—2002,which can eliminate the hidden dan⁃ger of heavy metals in tailings to the environment.The solid waste-based cementitious material is mainly composed of industrial solid waste such as slag,steel slag and desulfurization gypsum.It has low cost,high performance and wide application range.It realizes the resource utilization of solid waste and has broad prospects for industrial promotion.

关 键 词：固废 胶凝材料 尾矿 重金属 固化稳定化 

分 类 号：TD926.4[矿业工程—选矿]