磷石膏基材料在磷矿充填中的应用  

Application of phosphogypsum-based material to tailings backfill of phosphorite mine

作　　者：刘芳[1] 

机构地区：[1]重庆大学材料学院,重庆400045

出　　处：《化工学报》2009年第12期3171-3177,共7页CIESC Journal

基　　金：国家科技支撑计划项目(2007BAB08B07)

摘　　要：利用磷石膏和磷渣可配制出性能优良的矿山充填料,提高矿山资源的综合利用率,防止山体崩塌开裂,同时综合利用了工业废渣,减轻环境污染。充填料浆体的浓度对工作性和强度有显著影响,适当的料浆浓度既能保证浆体具有足够的自流性能,同时其强度发展也较为理想;磷渣在激发剂的作用下逐步水化硬化,与磷石膏构成一个结晶结构体,其强度随着磷渣掺量的增加而提高。浆体的自流性能可简化充填工艺,降低充填成本。The high-grade mine tailings backfill multipurpose utilization of mineral resources, made up from phosphogypsum and phosphor slag enhances prevents collapse and cracking of mountain massif, and alleviates environmental pollution by utilization of industrial waste. The concentration of the tailings backfill slurry has a remarkable influence on its workability and strength. With an appropriate concentration, tailings backfill slurry can not only guarantee the self-flowing capability but also ensure its desirable strength development. Phosphor slag gradually hydrates and hardens under the effect of activator. Together with phosphogypsum, phosphor slag develops into a crystal composition whose strength increases with increasing addition of phosphor slag. Slurry＇s self-flowing capability can achieve simplification of tailings backfill and reduction of its cost.

关 键 词：充填料 磷石膏 磷渣 强度 

分 类 号：TQ177.378[化学工程—硅酸盐工业] TD853.343[矿业工程—金属矿开采]