Research on the grinding effect and mechanism of grinding aid on low grade cement raw materials
CAO Taiyu
ZHOU Yuan
ZHENG Wukui
HE Zewei
LI Hui
Abstract：In response to the problems of poor grindability and unreasonable particle size distribution in low-grade cement raw materials,this experiment investigated the effects of six grinding aids on their grinding efficiency and clinker properties.The experi-mental results showed that the addition of 0.10%TEA had the best grinding effect,with a decrease of 1.62%in 80 μm sieve residue and the most significant decrease in SiO2 homogeneity coefficient,from 0.032 to 0.002.The f-CaO content in the clinker decreased from 1.42%to 0.80%,and the 28 day compressive strength increased by 9.4%.Inorganic grinding aids enhance the dis-persion between particles by increasing the surface potential,and the addition of 0.15%HMP reduces the surface potential by-6.8 mV;In addition,the addition of grinding aids reduces the coarse and angular particles,and the overall appearance tends to be spherical.
Keywords：grinding aidlow grade cementgrinding effectmechanism
Publication Date：2025-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 29-35,57 )