Cement grinding aid

Abstract

The invention discloses a cement grinding aid. The cement grinding aid is prepared from, by weight, 20-30 parts of triethanolamine, 20-30 parts of calcium formate, 20-30 parts of maleic anhydride, 10-15 parts of sodium lignin sulfonate, 1-8 parts of sodium pyrophosphate, 1-10 parts of wood calcium, 1-5 parts of hydrochloric ether and 5-10 parts of carboxymethylcellulose. According to the cement grinding aid, as the carboxymethylcellulose is added into the cement grinding aid formula, the birdnesting phenomenon of powder is obviously solved, the gradation of particles is improved, the micro-powder particle content is increased, the mobility of cement powder is accelerated, the powder is fully subjected to powder grinding, and the fineness and the strength of cement can be improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement grinding aid. Background technique [0002] Cement grinding aid is an additive that is added to the mill during the cement grinding process to help the grinding without damaging the performance of cement. It can change the dispersion of materials inside the mill and the flow rate of cement, improve the conveying efficiency of cement, and effectively eliminate the phenomenon of electrostatic adsorption of cement fine particles and ball paste grinding, and can increase the output of the mill by about 20%. , while effectively reducing over-grinding, optimizing cement particle gradation, and reducing cement sieve residue. The composite grinding aid also contains an activator that stimulates the potential activity of cement admixtures such as fly ash and slag powder, so as to increase the strength of cement, increase the amount of admixtures in cement production, ...

AI Technical Summary

Problems solved by technology

Due to the unreasonable formula of the existing cement grinding aids, the performance of cement is affected