Preparation of fly ash-granulated blast furnace slag-carbide slag binder and application in total tailings paste backfill

摘要：

　　Based on activation and synergistic effect among various materials,a low-cost mine backfill cementing material,FGC binder,was prepared by using fly ash,granulated blast-furnace slag(GBFS),carbide slag and composite activator.The proper proportioning of FGC binder is obtained by response surface experiment optimization method: fly ash 62%,GBFS 20%,carbide slag 8%and compound activators 10%.Adjusting the material ratio obtains different cementing material which could satisfy requirements of different mined-out areas.With the mass ratio of cementing material and tailings 1︰4~1︰8,the concentration of total solid 70%,the compressive strength values of total tailings filling body at 28 d reaches 1.64~4.14 MPa,and the backfilling cost is 20%lower than using OPC cement.

作者: Chao Li Ya-fei Hao Feng-qing Zhao

作者单位: Department of Chemical Engineering,Hebei University of Science & Technology,Shijiazhuang,050018,Chin Hebei Engineering Research Center of Solid Waste Utilization,Shijiazhuang,050000,China

会议类型: 国际会议

会议名称: 2017 International Symposium on Application of Materials Science and Energy Materials (SAMSE 2017) (2017材料科学应用与能源材料国际研讨会)

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2017-12-28（万方平台首次上网日期，不代表论文的发表时间）