用粒度分析、X射线衍射和X荧光分析等手段对山西某电厂的粉煤灰的物理化学性质进行分析.对试验样进行了浮选机探索试验和浮选柱工艺优化试验.研究结果表明,优化工艺条件为柴油捕收剂用量400g/t,起泡剂用量400 g/t,矿浆浓度15％,循环压力0.10 MPa,泡沫层高度3 cm,可得到产率为75.99％的尾灰,烧失量为1.17％,精煤产率为24.01％,烧失量为52.47％.在尾灰烧失量达到一级粉煤灰的指标要求下,柱式浮选的产率要高于浮选机的产率.%The sample for the fly ash was characterized by size analysis,X-ray diffraction and X-ray fluorescence.This test has carried on the flotation machine to test sample exploring experiment and process optimization.Within the range studied,the collecting agent is 400 g/t,the optimum frother dosage is 400 g/t,concentration of pulp is 15％,froth thickness is about 3cm and circulating pressure is 0.10 MPa.Get the productivity of tailing is 75.99％,a cleaning ash with 1.17％;and the productivity of clean coal is 24.01％,a cleaning ash with 52.47％.Column flotation yield is higher than the yield of the flotation machine at the end of the indicator reached levels ash loss on ignition of fly ash.
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