铝土矿浮选尾矿对水泥砂浆性能的影响  

Effect of bauxite flotation tailings on the properties of cement mortar

作　　者：勾密峰[1] 王思军[1] 郝中晶 种雪颖 谢四林 

机构地区：[1]河南理工大学材料科学与工程学院,环境友好型无机材料河南省高校重点实验室培育基地,焦作454003

出　　处：《环境工程学报》2016年第9期5185-5190,共6页Chinese Journal of Environmental Engineering

基　　金：河南省教育厅科学技术重点研究项目(14B430025);河南理工大学博士基金项目(B2014-007);河南省高等学校矿业工程材料重点学科开放实验室开放基金资助项目(MEM14-7);河南省重点科技攻关项目(152102210310)

摘　　要：以铝土矿浮选尾矿为研究对象,探讨了烘干尾矿、尾矿浆用作水泥基材料掺和料的可行性,测定了其对砂浆基本性能的影响。结果表明,尾矿作为混合材料能显著缩短水泥的凝结硬化时间;尾矿作为掺和料能够增加砂浆的保水性,提高砂浆的吸水率,降低砂浆的稠度;掺入10%的尾矿对砂浆的密度和力学性能具有较好的改善作用。因此,尾矿作为掺和料是可行的,有利于消耗废渣,改善生态环境。Based on the investigation of bauxite flotation tailings, the feasibility of using drying tailings and tailings slurry as cement mineral admixtures was discussed, and their effect on the basic performance of mortar was simultaneously assessed. The results show that the bauxite flotation railings can shorten the cement setting and hardening time significantly, increase the water retention of mortar, improve the water absorption of mortar, and reduce the consistency of mortar. The density and mechanical properties of mortar greatly improved with the addition of 10% railings. Therefore, the use of railings as an admixture is feasible and beneficial for waste con- sumption with a positive environmental impact.

关 键 词：铝土矿 烘干尾矿 尾矿浆 砂浆 掺和料 

分 类 号：X705[环境科学与工程—环境工程]