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通过对王集磷矿的尾砂特征、颗粒沉降速度、渗透系数等的测定,认为该矿充填体应处于可塑和软塑的交界线上,即稠度为7,其含水率为23.9％。折合浓度80.7％。而尾砂自然脱水时的极限含水率为31％,折合浓度76.3％。为达到尾矿充填的要求,提出了添加吸水胶凝剂、增设渗流索等降低充填料含水量的措施,并针对王集磷矿具体情况设计了可行的尾矿充填系统。
Through the determination of tailings characteristics, sedimentation velocity and permeability coefficient of Wangji phosphate rock, it is considered that the filling should be on the boundary of plasticity and soft plastic, that is, the consistency is 7 and the water content is 23.9%. The equivalent concentration of 80.7%. The natural dehydration tailings when the ultimate moisture content of 31%, equivalent to a concentration of 76.3%. In order to meet the requirement of tailings filling, the measures of adding water-absorbing gelling agent, adding percolation rope and so on to reduce the water content of filling material are proposed. A feasible tailings filling system is designed according to the specific conditions of Wangji phosphate rock.