Journal of China University of Mining ＆ Technology. 2014, (04) Core

Effect of breakage and cleavage ways on the electrokinetic properties of kaolinite particlesChinese Full Text

LIU Lingyun;MIN Fanfei;ZHANG Mingxu;SONG Shaoxian;LU Fangqin;School of Materials Science and Engineering,Anhui University of Science and Technology;School of Resources and Environmental Engineering,Wuhan University of Technology;

Abstract: In order to study the electrokinetic properties of different sizes kaolinite particles,the zeta potentials in aqueous solutions were determined by the ZetaProbe analyzer.The effects of breakage and cleavage ways on the electrokinetic properties of kaolinite particles were analyzed according to the changes of each surface area caused by different cleavage ways.The results show that the IEP of 0.30,4.65 and 7.95 mm kaolinite particles decreased first and then increased with the increasing of size from 0.30 mm to 7.95 mm.The negative zeta potential increased when 3.00＜pH＜7.40＞ and decreased first and then increased when pH≥7.40.The T-0 cleavage and E-E cleavage will decrease and increase a value（acid-base response coefficient） of kaolinite particles,respectively.The T-0 cleavage plays a dominant role in the breakage and cleavage of large kaolinite particles,and the E-E cleavage plays a more and more dominant role in the breakage and cleavage of smaller kaolinite particles,which is the main cause of electrokinetic characteristics of different sizes kaolinite particles in aqueous solutions.

Keywords：

kaolinite; electrokinetic characteristic; cleavage; particle size; acid-base response coefficient;

DOI：
10.13247/j.cnki.jcumt.000159
Series：
Subject：
Classification Code：
TD985

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Effect of breakage and cleavage ways on the electrokinetic properties of kaolinite particlesChinese Full Text

LIU Lingyun;MIN Fanfei;ZHANG Mingxu;SONG Shaoxian;LU Fangqin;School of Materials Science and Engineering,Anhui University of Science and Technology;School of Resources and Environmental Engineering,Wuhan University of Technology;

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