粉煤灰中未燃炭回收的试验研究  

Experimental Study on the Recovery of Unburned Carbon from Coal Fly Ash

作　　者：黄川[1] 曹亦俊 刘长青[1] 冉进财 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]国家煤加工与洁净化工程技术研究中心,江苏徐州221116

出　　处：《矿产综合利用》2017年第3期90-94,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金面上项目(51274198);高等学校博士学科点专项科研基金项目(20120095110021)资助

摘　　要：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400 g/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.

关 键 词：粉煤灰 未燃炭 浮选柱 

分 类 号：TD942[矿业工程—选矿]