Coagulating enhanced cement grinding aid

The invention provides a cement grinding aid comprising the following components: 10-20wt% of organic coagulating materials comprising alcohol amine materials, calcium formate and polyacrylamide, 12-25wt% of inorganic coagulating materials comprising aluminum-containing materials, magnesium-containing materials and layered sodium silicate, and the balance of kieselguhr. The cement grinding aid provided by the invention comprises the organic coagulating materials and the inorganic coagulating materials which interact with each other, so that the obtained cement grinding aid can shorten the cement setting time and improve the strength of cement. In addition, the cement grinding aid provided by the invention can also improve the yield of the cement and reduce the power consumption for grinding, and can reduce the consumption of clinker and improve the consumption of industrial waste slag under the condition that the strength of the cement and the hourly output of a grinding machine are basically not changed.