大掺量粉煤灰充填料的激活试验研究  

Activation Experiment Study on High Volume Fly Ash Filling Material

作　　者：王炳文[1] 张磊[2] 赵军[1] 王东波[1] 刘中华[1] 张国军[1] 张涛[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]鄂尔多斯职业学院矿业系,内蒙古鄂尔多斯017200

出　　处：《煤炭工程》2014年第10期192-195,共4页Coal Engineering

基　　金：内蒙古自治区科技厅应用技术研究与开发资金项目(20111401);中国矿业大学(北京)大学生创新训练项目(J121102)

摘　　要：根据粉煤灰物理化学性质及其活性激发原理,以铁矿尾砂为骨料,以粉煤灰和普通硅酸盐水泥熟料为胶凝材料,以不同龄期的单轴抗压强度为指标,研究尾砂胶结充填中粉煤灰活性激发方式,确定物理激发和化学激发相结合的复合激发方式。并试验验证了物理激发和化学激发相结合的复合激发方式可增长强度40%左右。明确了粉煤灰最佳的复合激发方式为粉磨20min,外掺激发剂的比例为烧石膏:Na2SO4∶CaCl2∶Na2CO3=2∶0.1∶0.2∶0.2。According to the physical and chemical properties of fly ash and its active principle, the paper studied activation method of fly ash in cemented tailings backfill, to determine the composite activation method of physical and chemical activation, using iron ore tailings as aggregate, fly ash and ordinary portland cement clinker as cementitious materials, with indicators of uniaxial compressive strength of different ages. The results show that, composite activation methods can increase the material intensity by 40%, and the optimal method is grinding 20 minutes, and using activator with ratio of calcined gypsum 2： Na2SO4 0. 1：CaCl2 0. 2： Na2CO3 0. 2.

关 键 词：粉煤灰充填料 活性激发方式 单轴抗压强度 

分 类 号：TD223[矿业工程—矿井建设]