中国粉体技术2017，Vol.23Issue(1)：42-47,6.DOI:10.13732/j.issn.1008-5548.2017.01.010
改性膨润土对煤泥脱水效果的影响
Effect of modified bentonite on slime dehydration
摘要
Abstract
Ca-Bentonite of Fuxin Liaoning was modified by cetyltrimethylammonium bromide (CTAB) to prepare organ-bentonite CTAB-Bt.CaY-Bt,CaJ-Bt and CTAB-Bt were combined with flocculant respectively to discuss its effect on slime dehydration and analysis its mechanism.The results show that CTAB successfully intercalates into the montmorillonite interlayer and increases the interlayer spacing.With the use of CaY-Bt and flocculant,slime dehydration rate is increased by 2.32 mL/s and filter cake moisture is decreased by 1.84％ than without CaY-Bt.With the use of CaJ-Bt and flocculant,slime dehydration rate is increased by 0.62 mL/s and filter cake moisture is decreased by 2.22％.With the use of CTAB-Bt and flocculant,slime dehydration rate is increased by 1.51 mL/s and filter cake moisture is decreased by 4.95％.With comprehensive consideration of dehydration speed and filter cake moisture,the usage of CTAB-Bt and PAM is the cooperatively best scheme.It indicates that the effects modified bentonite on coal surface,increase the hydrophobicity of coal slime and promotes its hydrophobic agglomerate after analysis of XRD,FTIR,laser particle size and contact angle analysis.关键词
改性膨润土/煤泥/脱水速度/滤饼水分/疏水聚团Key words
modified bentonite/slime/dehydration rate/filter cake moisture/hydrophobic agglomeraterotein分类
矿业与冶金引用本文复制引用
马瑾,樊玉萍,董宪姝,冯泽宇..改性膨润土对煤泥脱水效果的影响[J].中国粉体技术,2017,23(1):42-47,6.基金项目
山西省科技攻关项目,编号:20130313001-2 （）
太原理工大学校基金项目,编号:2015QN051. （）
