摘要
以金川矿区废石与尾砂作为骨料,通过级配分析选用最优配合比制备了高浓度料浆。采用法国Rheo CAD500型流变仪进行了流变实验,获取了流变曲线。对曲线的变化过程及现有的流变模型进行分析,结果表明,料浆的流变特性是多种模型复合的综合体现,现有的流变模型不能直接用于废石-尾砂高浓度料浆流变参数的回归。故进一步对流变曲线的变化机理及过程进行分析,确定了废石-尾砂高浓度料浆流变曲线的分析方法及流变模型,最终获取相应的流变参数。研究结果可为矿山应用废石-尾砂高浓度料浆提供可靠依据。
With the waste rock and sand tailings in Jinchuan Mine as aggregate,a kind of slurry with high concentration was prepared with optimal mix proportioning based on grading analysis. The rheological experiment was performed by using RheoCAD500 Rheometer,from which rheological curves were obtained. An analysis of variation of curves and the existing rheological model showed that the rheological properties of such slurry comprehensively represented several kinds of model,and the existing rheological model can't be directly used for the regression of rheological parameters of such high-concentrated slurry with waste rock and sand tailings. Thus,the variation mechanism and process of rheological curves were furtherly analyzed,so as to choose an analysis method for the rheological curves and rheological model.Finally,the corresponding rheological parameters were obtained. This research can provide some reference for the application of such kind of slurry backfill consisting of waste rock and sand tailings.
引文
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