摘要
全尾砂固结排放能减少地表尾矿库引发的地质灾害与环境污染.固结剂配制与脱水工艺是其关键技术.基于多因素正交试验,选择满足西石门全尾砂固排所需的固结剂组分,在微观上采用XRD、SEM对所选固结剂的水化机理与胶结性能进行分析,研究对水泥的可替代性.对不同浓度全尾砂浆运用不同脱水设备进行三阶段工业试验,得到各自产能规律,其中圆盘真空过滤机产能高且对砂浆浓度不敏感,适用于该铁矿浓密机底流40％～45％的浓度区间;对于滤后试块成型率低,基于压汞试验得到滤饼孔隙率等微观结构参数,间接测得强度0.78MPa,大于0.50 MPa.
Tailings consolidation emission can reduce geological hazard and environmental contamination induced by tailings dam. Preparation of consolidation agent and dehydrating process selection are the key technologies. Based on multi-factors orthogonal test, reasonable component of consolidation agent applied in Xishimen iron ore is selected; armed with XRD, SEM, cementing performance and hydration products are researched to determine the substitutability to cement. Conducted with three-phase industrial test, capacity of law about dehydration equipment is obtained. Disc vacuum filter which is adapted to 40;45% underflow of thickener has a high production and is not insensitive to concentration. Conducted with mercury injection test, micro-structure parameters, like the porosity and aperture, are measured to obtain the strength of test block indirectly. The value of strength is 0.78 MPa which exceed the needed 0.50 MPa.
出处
《有色金属（矿山部分）》
2015年第3期57-61,共5页
NONFERROUS METALS(Mining Section）
基金
"十二五"国家科技支撑计划项目(2013BAB02B04)
关键词
固结剂
胶结性能
孔结构
陶瓷过滤机
衰减特性
consolidation agent
cementing performance
micro-structure parameter
ceramic filter
attenuation characteristics
