基于正交实验的废石-磷尾砂充填材料配比优化研究  

Reasearch on Optimum Mix Proportion Waste Rock-tailings Backfill Materials Based on Orthogonal Tests

作　　者：宋俊杰 张卫中[1] 王孟来[2] 何勤理 康钦容[1] Song Junjie;Zhang Weizhong;Wang Menglai;He Qinli;Kang Qinrong(School of Resource&Safety Engineering,Wuhan Institute of Technology,Wuhan,Hubei,China;Yunnan Phosphate Chemical Group Co.,Ltd.,Kunming,Yunnan,China)

机构地区：[1]武汉工程大学资源与安全工程学院,湖北武汉43000 [2]云南磷化集团有限公司,云南昆明65000

出　　处：《矿产综合利用》2022年第6期55-60,共6页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金青年基金项目(51804222);武汉工程大学人才专项经费资助项目(K201727,K201736);湖北省中央引导地方科技发展专项(2017ZYYD007);武汉工程大学第十一届研究生教育创新基金(CX2019095)。

摘　　要：为改善磷矿山固废物的赋存问题,采用正交实验法,开展了废石、磷尾砂充填配比研究。基于SPSS多元非线性回归分析,研究充填体单轴抗压强度、泌水率及坍落度的影响因素,确定较优配比并开展半工业实验进行可靠性分析。实验结果表明:当废石尾砂比为6∶4时,充填性能达到较优;当充填料浆的质量浓度为78%、水泥掺量为280 kg/m^(3)时,充填体泌水率达到较优并满足高流态的泵送要求,符合矿山充填工艺要求。To improve the problem of solid waste in phosphate mines,the research on the optimum mix ratio for cemented filling experiment of waste rock and phosphorus tailings was studied by orthogonal tests.Research on the influencing factors of uniaxial compressive strength,bleeding rate and slump constant for the filling body which was based on SPSS multivariate nonlinear regression analysis.Determining the optimal ratio and carry out semi-industrial tests to verify reliability.Results show that the filling to achieve optimal performance when the waste rock and tailings ratio is 6∶4,mass concentration is 78%and cement ratio is 280 kg/m^(3)for the filling body,the bleeding rate of filling bodyreaches the optimum and meets the pumping requirements of high fluidity,which meets the requirements of the mine filling process.

关 键 词：废石 磷尾砂 充填强度 泌水率 坍落度 

分 类 号：TD95[矿业工程—选矿]