尾砂特性及充填工艺参数对金属尾砂胶结充填体性能的影响  

Influence of tailings characteristics and backfilling process parameters on the properties of cemented tailings backfill

作　　者：张玉露 梁志鹏 曲效成 高永涛[2] 张克含 ZHANG Yulu;LIANG Zhipeng;QU Xiaocheng;GAO Yongtao;ZHANG Kehan(Beijing Anke Xingye Technology Co,Ltd,Beijing 102299,China;School of Civil Engineering and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京安科兴业科技股份有限公司,北京102299 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《有色金属(矿山部分)》2025年第2期123-131,137,共10页NONFERROUS METALS(Mining Section)

基　　金：国家重点研发计划项目(2023YFC3707803)。

摘　　要：尾砂胶结充填是解决尾砂原位资源化利用和建设绿色矿山的有效方案,为优化尾砂胶结充填材料性能及充填工艺参数,本研究基于响应面法实验分析了充填浓度(A)、灰砂比(B)、尾砂级配(C)等因素对充填浆体流变性能及抗压强度的影响规律。结果显示,相较于灰砂比和尾砂颗粒级配参数,质量浓度的变化对流变性能影响最显著;充填体的抗压强度随浓度和灰砂比的增大而增加,但抗压强度的增长率随浓度和灰砂比的增加逐渐降低;抗压强度响应单因素显著性次序为B>A>C,浆体的最佳配比参数为尾砂浓度69%,灰砂比1∶8,尾砂级配Ⅰ类。本研究结果可有效促进尾砂胶结充填技术的发展,为实际应用提供依据。Cemented tailings backfill is recognized as a vital strategy for the in-situ resource utilization of tailings and the advancement of sustainable mining practices.The aim of this study is to enhance the performance of cemented tailings backfill materials and to refine the parameters of the backfilling process.Employing response surface methodology,the influence of filling concentration(A),cement-to-sand ratio(B),and tailings gradation(C)on rheological properties and compressive strength of the backfill slurry was systematically investigated.The study revealed that the variations of mass concentration exerted a more pronounced effect on the rheological properties than the cement-to-sand ratio and the gradation of tailings particles.The compressive strength of the backfill was positively correlated with increased concentrations and cement-to-sand ratios,albeit with a diminishing growth rate of strength as these parameters escalated.The significance of the single-factor impact on compressive strength was hierarchically ordered as B>A>C.The optimal mixture parameters for the slurry were identified as a tailings concentration of 69%,a cement-to-sand ratio of 1∶8,and a TypeⅠtailings gradation.The insights garnered from this research are instrumental in propelling the evolution of tailings cemented backfill technology and serve as a foundation for its practical implementation,contributing to the broader goals of environmental sustainability and resource efficiency in the mining industry.

关 键 词：尾砂充填 灰砂比 尾砂级配 抗压强度 响应面法 

分 类 号：TD853[矿业工程—金属矿开采]