四川环境2023，Vol.42Issue(6)：95-103,9.DOI:10.14034/j.cnki.schj.2023.06.014
水泥固化技术处理有害冶金废渣的研究
Research on the Treatment of Hazardous Metallurgical Slag by Cement Curing Technology
摘要
Abstract
Metallurgical production usually generates hazardous solid wastes,and the discharge and disposal of these wastes seriously threaten the ecological environment and human health,so it needs to be treated harmfully.In order to solve the harm caused by the presence of these waste piles in the environment,this study takes the lead-arsenic waste residue produced in a metallurgical base in Hunan as an example,and using cement,mineral admixtures,glass fibers and other materials for curing treatment.The effects of different mineral admixtures(fly ash,zeolite and attapulgite),glass fiber doping and water-cement ratio on the pore structure of the cured bodies were investigated based on X-ray CT scanning technology,and then the relationship between porosity and leaching toxicity was explored.The results showed that the porosity and leaching toxicity of the cured body showed a trend of decreasing and then increasing with the increase of glass fiber doping and water-cement ratio.When the admixture was gravel,the glass fiber doping was 2％and the water-cement ratio was 0.5,the stability was the best,and the curing blockage rate of Cd,Pb,As and Zn was higher than 99％.The leaching toxicity of the cured body had a certain positive relationship with the porosity.In order to improve the stability of metallurgical slag in the cement curing body.Therefore,in order to improve the stability of metallurgical waste slag in cement cured body and reduce the ecological pollution after leaching of harmful heavy metals,appropriate w/c ratio and other condition parameters should be designed.关键词
生态环境/冶金废渣/水泥固化技术/稳定性/环境污染Key words
Ecological environment/metallurgical slag/cement curing technology/stability/environmental pollution分类
资源环境引用本文复制引用
李佩珂,邹浩,张永德,雷浩,马兰..水泥固化技术处理有害冶金废渣的研究[J].四川环境,2023,42(6):95-103,9.基金项目
国家重点研发计划项目(2018YFC1903304). （2018YFC1903304）
