化工矿物与加工2024，Vol.53Issue(1)：28-34,7.DOI:10.16283/j.cnki.hgkwyjg.2024.01.005
钢渣粉对提钛渣胶凝材料中氯离子固化效果的影响机理研究
Mechanism study on the effect of steel slag powder on the chlorine ion curing effect in titanium extraction slag cementitious materials
摘要
Abstract
The use of steel slag powder(SSP)as an admixture can promote the strength growth of cementitious materials,but the mechanism of its influence on the Cl-curing effect in cementitious materials is not yet clear.Based on this,finely ground steel slag powder is added to titanium extraction slag(TETS)to prepare CaO-SSP-TETS cementitious material solidified body,and the influence mechanism of steel slag powder on the Cl-solidification effect in the solidified body is explored.Keeping the CaO content and liquid-solid ratio constant,different mass ratios of steel slag powder to titanium extraction slag,the solidification amount of Cl-in the solidified body at different curing ages,and the growth rate of solidification amount were investigated.The Cl-concentration,hydration reaction products,microstructure,and microstructure of the solidified body leachate were characterized using a chloride ion rapid analy-zer,XRD,SEM,and EDS,The results show that the amount of Cl-solidified is proportional to the amount of titani-um slag,and the increase multiple of Cl-solidified increases first and then decreases with the increase of steel slag content.When the mass ratio of steel slag powder to titanium extraction slag is 1∶1,the increase multiple of Cl-solidified is the highest.The newly formed phases in the solidified body are mainly gibbsite,calcite and hydrated calcium silicate.The solidification of Cl-by the solidified body is mainly chemical solidification of Cl-by gibbsite and physical adsorption of Cl-by hydrated calcium silicate.关键词
提钛渣/钢渣粉/固化体/氯离子固化/化学固化/物理吸附Key words
titanium extraction slag/steel slag powder/solidified body/chlorine ion curing/chemical curing/physi-cal adsorption分类
化学化工引用本文复制引用
万紫妍,唐颂,罗利明,彭耀,谢宇航,杨越,梁雨..钢渣粉对提钛渣胶凝材料中氯离子固化效果的影响机理研究[J].化工矿物与加工,2024,53(1):28-34,7.基金项目
四川省高校高价值专利育成中心培育项目(2022-ZS-00031) （2022-ZS-00031）
四川省省级大学生创新创业训练计划项目(S202110619113). （S202110619113）
