Composite output increasing type grinding aid and preparation method thereof

Abstract

The invention discloses a composite output increasing grinding aid, which is especially designed for assisting the grinding of common silicate cement, and belongs to the field of grinding assistance in cement production. The grinding aid is composed of the following raw materials: triethanolamine, triisopropanolamine, diethanolisopropanolamine, propylene glycol, glacial acetic acid, and water. The preparation method of the grinding aid comprises the following steps: washing a stirring boiler with water before the production, adding water into the stirring boiler, adding diethanolisopropanolamine, stirring until the diethanolisopropanolamine is totally dissolved; adding glacial acetic acid, stirring until the glacial acetic acid is totally dissolved; then orderly adding triethanolamine, propylene glycol, and triisopropanolamine; and finally stirring for 30 to 40 minutes so as to obtain the grinding aid. The grinding aid can improve the endurance and corrosion resistance of cement concrete products, which have the advantages of more stable volume, lower hydration heat, and better construction property. After the grinding aid is mixed into cement, the average particle size of the cement is prominently reduced, the content of fine particles is prominently increased, the particle shape is basically not changed, the roundness of the particles is increased, the repose angle is prominently reduced, and the fluidity is enhanced.

Description

technical field [0001] The invention relates to a composite production-increasing grinding aid and a preparation method thereof, belonging to the field of cement production grinding aids, and is a composite cement grinding aid specially designed for ordinary Portland cement grinding aids. Background technique [0002] In the cement production process, when the cement particles are ground to an average particle size of 14 μm or less, they will agglomerate due to molecular force and electrostatic force generated by the breaking of Si-O and Ca-O bonds during the crushing process, adhering to the steel ball and lining. On the plate, the phenomenon of wrapping balls and forging appears, which reduces the grinding efficiency of the mill. In order to overcome the unfavorable factors in the cement grinding process, cement grinding aids are usually added to the cement grinding process to improve production efficiency. At present, the early strength of cement is enhanced by adding to...

AI Technical Summary

Problems solved by technology

This kind of grinding aid can improve the early strength of cement, but it has brought potential harm to the durability of cement such as sulfate corrosion resistance, steel corrosion resistance, and alkali-aggregate reaction resistance, and this type of grinding aid does not improve cement grinding. Function of Efficiency and Cement Fluidity