Cement grinding aid and preparation method thereof

Abstract

The invention discloses a cement grinding aid and a preparation method thereof. Raw materials of the cement grinding aid consists of 10-30 percent of triethanolamine, 12-30 percent of tirisopropanolamine, 5-20 percent of ethylene glycol, 3-10 percent of propanediol, 15-40 percent of water, 1-5 percent of sodium dodecyl benzene sulfonate, 3-10 percent of lignin and 2-5 percent of anhydrous sodium sulfate; water is poured into a reactor and heated to 40-50 DEG C to be reserved; the sodium dodecyl benzene sulfonate is added to be stirred for 15min; the anhydrous sodium sulfate is added and stirred for 10min, then the lignin is added and stirred for 30min; materials in the reactor are filtered by a 150 mesh screen; the ethylene glycol and the propanediol are added and stirred for 20min; the triethanolamine and the tirisopropanolamine are added and stirred for 30min and the grinding aid products are obtained. The cement grinding aid can improve grinding efficiency and early and later strength of cement and reduce cement cost.

Description

technical field [0001] The invention belongs to the technical field of cement additives, in particular to a cement grinding aid and a preparation method thereof. Background technique [0002] At present, in the field of cement industry, cement grinding aids have been widely used in countries all over the world. In the cement production process, the crushing and grinding link consumes the most energy in the entire production link, and also has the lowest energy utilization rate. In the grinding process, full grinding, sticky balls, and wall hanging are easy to occur and affect the grinding efficiency. Adding grinding aids during the grinding process can improve the grinding efficiency of cement, reduce grinding power consumption and grinding costs, increase the fluidity of cement, and improve the quality of cement; while most cement grinding aids currently on the market, Although some can increase cement output, they are not ideal in terms of cement quality and performance. ...

AI Technical Summary

Problems solved by technology

In the cement production process, the crushing and grinding link consumes the most energy in the entire production link, and also has the lowest energy utilization rate. In the grinding process, full grinding, sticky balls, and wall hanging are easy to occur and affect the grinding efficiency. Adding grinding aids during the grinding process can improve the grinding efficiency of cement, reduce grinding power consumption and grinding costs, increase the fluidity of cement, and improve the quality of cement; while most cement grinding aids currently on the market, Although some can increase cement production, they are not ideal in terms of cement quality and performance.