Introduction: Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It can significantly increase the cement production rate, cement strength at different ages, and improve its fluidity. Cement grinding aids can significantly reduce the phenomenon of electrostatic adsorption and agglomeration formed during the grinding process, and can also reduce the tendency of ultrafine particles formed during the grinding process to agglomerate again. Cement grinding aids can also significantly improve the fluidity of cement, enhance the grinding effect of the mill and the powder selection efficiency of the powder selection machine, thereby reducing the energy consumption of grinding. Cement produced using grinding aids has a lower tendency for compaction and agglomeration, which is beneficial for the loading and unloading of cement and can reduce the phenomenon of wall hanging in cement storage. As a chemical additive, grinding aids can improve the distribution of cement particles and stimulate hydration kinetics, thereby increasing the early and later strength of cement. Principle: The first theory is that the adsorption of grinding aid molecules on particles reduces the surface energy of the particles or causes dislocation migration of crystals near the surface layer, resulting in point or line defects, thereby reducing the strength and hardness of the particles and promoting the generation and propagation of cracks. The second theory is that grinding aids reduce the viscosity of ore by adjusting its rheological properties and the surface electrical properties of particles, promoting particle dispersion, thereby improving the flowability of ore, preventing particle adhesion on the grinding medium and mill liner, and agglomeration between particles.
