Concrete grinding aid and preparation method thereof

The present invention relates to a cement grinding aid and a method for producing the cement grinding aid, which belongs to the production technical field of the cement. The grinding aid comprises theingredients in weight percent as follows: 12 to 14 percent of polyacrylamide, 9 to 11 percent of polyacrylic acid, 5 to 7 percent of trolamine, 9 to 11 percent of triisopropanolamine, 6 to 8 percentof red mud, 12 to 14 percent of sodium sulfate anhydrous, 6 to 8 percent of quicklime, and 34 to 36 percent of water. The cement grinding aid not only has good grinding-assistant effect, but also canenhance the strength of the cement; the preparation method that is scientific, reasonable, simple, convenient and feasible divides the raw materials into two groups, wherein, group A is polyacrylamide, polyacrylic acid, trolamine and triisopropanolamine, and group B is the red mud, the sodium sulfate anhydrous, the quicklime and the water; the raw materials in group A and group B are respectivelymixed uniformly and independ