磷矿浮选超细全尾砂胶结充填的试验研究  

Experimental Study on Cemented Filling with Ultra-Fine Flotation Tailings of Phosphate Ore

作　　者：张儒学[1] 王谦源[2] 王孟来[1,3] 王海龙 黄杰[1] ZHANG Ruxue;WANG Qianyuan;WANG Menglai;WANG Hailong;HUANG Jie(Yunnan Phosphate Chemical Group Co.,Ltd.,Kunming,Yunnan 650600,China;Qingdao University of Technology,Qingdao,Shandong 266520,China;National Engineering and Technology Center for Development&Utilization of Phosphorus Resources,Kunming,Yunnan 650600,China)

机构地区：[1]云南磷化集团有限公司,云南昆明650600 [2]青岛理工大学,山东青岛市266520 [3]国家磷资源开发利用工程技术研究中心,云南昆明650600

出　　处：《矿业研究与开发》2022年第9期39-43,共5页Mining Research and Development

摘　　要：磷矿浮选尾砂具有粒级细、含泥量高的特点,使用传统水泥胶凝材料难以固化且强度较低。结合昆明某磷矿地下充填开采实际,试验验证了采用高性能胶固料胶结浮选全尾砂充填的可行性。试验结果表明:采用高性能胶固料可以很好地解决超细浮选尾砂充填的固化强度问题,与添加碎石方案相比,直接充填成本能够降低一半。研究了灰砂比、料浆质量浓度、养护龄期等对充填体强度的影响,发现灰砂比和料浆质量浓度对强度的影响呈线性规律,养护龄期与强度的关系则可用Logistic函数描述。The flotation tailings of phosphate ore have the characteristics of fine grain size and high mud content,so it is difficult to cure with traditional cement cementitious materials and its strength is low.Combined with the practice of underground filling mining of a phosphate ore in Kunming,the feasibility of using high-performance cementitious materials for flotation full tailings filling was verified by experiments.The results show that the use of high-performance cementitious materials can solve the problem of curing strength of ultra-fine flotation tailings filling,and the cost of direct filling can be reduced by half compared with the scheme of adding crushed stones.The influence of cement-sand ratio,slurry mass concentration,curing age and other factors on the strength of filling body was studied.It is found that the influence of cement-sand ratio and slurry mass concentration on the strength is linear,and the relationship between curing age and strength can be described by Logistic function.

关 键 词：胶结充填 磷浮选尾砂 胶凝材料 充填体强度 充填成本 

分 类 号：TD853.34[矿业工程—金属矿开采]