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一、前言澳大利亚有66座选煤厂,每年约出500多万吨以上的尾煤(干基),其中大部分尾煤都先脱掉部分水后,再用泵送至尾煤池,或废弃的露天矿采场,或井下巷道。虽然在脱水系统已使用分级旋流器、脱泥筛及圆锥形沉淀池等作预脱水,但仍有35座选煤厂使用浓缩机作预脱水。在选煤厂中,浓缩机既可用于细粒煤泥的脱水,也可用于尾煤的脱水。由于用来
I. INTRODUCTION There are 66 coal preparation plants in Australia, each year about 5000000 tons of tailings (dry basis), most of which will take off some of the tailings of water, and then pumped to the tail coal pool, or Abandoned open-pit mining stope, or downhole roadway. Although pre-dehydration has been performed in the dewatering system using a cyclone, a desilting screen, a conical sedimentation tank, etc., 35 coal preparation plants still use a concentrator for pre-dehydration. In the coal preparation plant, the thickener can be used for both the dehydration of fine coal slime and the dehydration of tail coal. As used