全尾砂膏体料浆的流变特性研究  

Study on Rheological Properties of the Unclassified-tailings Paste

作　　者：翟永刚[1] 吴爱祥[1] 王洪江[1] 陈琴瑞[1] 李航空[1] 严佳龙[1] 

机构地区：[1]北京科技大学

出　　处：《金属矿山》2010年第12期30-32,57,共4页Metal Mine

基　　金："十一五"国家科技支撑计划项目(编号:2006BAB02A01)

摘　　要：以某矿全尾砂充填膏体为试验料浆,采用正交设计法设计试验方案,利用R/S+SST型流变仪对全尾砂膏体进行流变测试试验,研究质量浓度、灰砂比和淬尾比(水淬渣/全尾砂)三因素对流变参数的影响规律。试验结果利用极差分析、方差分析和多元回归分析方法分析。结果表明:膏体的屈服应力与浓度呈单调递增函数关系。膏体具有料浆的触变性和剪切变稀等流变特征。在质量百分比浓度、灰砂比和淬尾比3个影响因素中,影响顺序为质量浓度>淬尾比>灰砂比;三因素中质量浓度对流变参数的影响比较显著。Taking unclassified-tailings paste as the experimental slurry,the orthogonal design method is adopted to design the experimental scheme.And R/S＋ SST rheometer is used to test the rheological characteristic of paste and investigate the effect rule of three factors on rheological parameters,which are weight concentration,cement-tailings ratio and slag-cement ratio.With the aid of the range analysis,the variance analysis and the multiple regression analysis methods,the experimental results showed that the relationship of between yield stress and weight concentration was appeared as an exponential increase function.The paste has the rheological characteristics of slurry,such as thixotropism and shear thinning.Among three factors of weight concentration,cement-tailings ratio and slag-cement ratio,their influence level is weight concentrationslag-cement ratiocement-tailings ratio.There,weight concentration has a relatively significant effect on the rheological parameters.

关 键 词：桨式流变仪 正交设计法 全尾膏体 流变参数 

分 类 号：TD853.342[矿业工程—金属矿开采]