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本文介绍了使用叠盘喷嘴式离心机系统进行工业粉矿(如方解石和高岭土)温式分级的试验结果。说明了这种离心机能有效地对固体含量为40%的微细物料(约60%<2μm)进行分级。除去给料中不希望要的较粗颗粒后,产品粒度的分布变得较细且较陡。而且应用统计方法对G力、盘的形状、喷嘴尺寸、分流率(溢流量与给料量的体积比)和给料量等参数进行了分析和评估。另外,建立了试验结果和影响离心机颗粒分级的关键参数之间的关系。
This paper presents the results of a temperature grading experiment on industrial ores (such as calcite and kaolin) using the stacked disk nozzle centrifuge system. This centrifuge is shown to effectively fractionate fine materials (about 60% <2 [mu] m) with solid content of 40%. After removing the undesired coarse particles in the feedstock, the product particle size distribution becomes finer and steeper. And the parameters such as G force, disk shape, nozzle size, flow rate (the volume ratio of overflow to feed volume) and feed amount were also analyzed and evaluated by statistical methods. In addition, the relationship between the test results and the key parameters influencing the centrifuge particle fractionation was established.