Preparation of Fine Cement Slurries by Wet-Ground Using a Pneumatic Colloid Mill  

作　　者：袁海滨 易伟欣 于弘奕 

机构地区：[1]Institute of Materials Science and Engineering,Henan Polytechnic University [2]Institute of Resources and Environment,Henan Polytechnic University

出　　处：《Journal of Donghua University(English Edition)》2015年第4期594-596,608,共4页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.51272068);Natural Science Foundation of Henan Province,China(No.2010A430010);Foundation of Henan Key Discipline Open Laboratory of Mining Engineering Materials,China(No.M EM12-21)

摘　　要：This study aims to investigate the preparation of fine cement slurries by wet-ground using a pneumatic colloid mill. A pneumatic colloid mill was designed and produced. Furthermore,ordinary Portland cement slurries were ground using the pneumatic colloid mill. Moreover,the fineness of ground cement slurries was studied. The particle sizes of ground cement slurries with various cumulated percent were all better than those of cement slurries before grinding. When water was used as the dispersant,the best average diameter of cement slurries was obtained by grinding for 10,and 15 min for cement slurries with water / cement ratio of 1∶ 1,and0. 9∶ 1,respectively. When ethanol was used as the dispersant,the particle sizes of all cumulated percent decreased gradually with the increasing grinding time,and the particle sizes of cumulated percent of D97 decreased rapidly with the increasing grinding time. The grinding effect of big particle sizes of cement slurries is better than that of small particle sizes.This study aims to investigate the preparation of fine cement slurries by wet-ground using a pneumatic colloid mill. A pneumatic colloid mill was designed and produced. Furthermore,ordinary Portland cement slurries were ground using the pneumatic colloid mill. Moreover,the fineness of ground cement slurries was studied. The particle sizes of ground cement slurries with various cumulated percent were all better than those of cement slurries before grinding. When water was used as the dispersant,the best average diameter of cement slurries was obtained by grinding for 10,and 15 min for cement slurries with water / cement ratio of 1∶ 1,and0. 9∶ 1,respectively. When ethanol was used as the dispersant,the particle sizes of all cumulated percent decreased gradually with the increasing grinding time,and the particle sizes of cumulated percent of D97 decreased rapidly with the increasing grinding time. The grinding effect of big particle sizes of cement slurries is better than that of small particle sizes.

关 键 词：fine cement slurry wet-ground pneumatic colloid mill particle size distribution FINENESS 

分 类 号：TB321[一般工业技术—材料科学与工程]