Introduction to the performance of cement grinding aids The so-called cement grinding aid is an admixture that aids in grinding in the cement grinding process to improve cement grinding and improve production efficiency without compromising cement performance. In order to improve the water resistance of the cement series, improve the early strength and the processability of the cement, the powder mixture of mineral oil, animal oil and petroleum cracking residue is tested and used, and combined with hydrochloric acid or calcium chloride, lime or calcium-containing substance. Minerals with inert and adsorptive properties are used as carriers. These admixtures greatly improve the water resistance and processability of the cement series.