Cement grinding aid as well as production process and application thereof

The invention relates to the technical field of cement auxiliaries, and particularly discloses a cement grinding aid and a production process and application thereof, and the cement grinding aid is prepared from the following raw materials in parts by weight: 5 to 15 parts of monoethanolamine, 30 to 50 parts of diethanolamine, 40 to 100 parts of epoxypropane, 0.1 to 0.3 part of polymerization inhibitor and 0.03 to 0.05 part of citric acid. The purities of diethanolisopropanolamine and monoethanolisopropanolamine in the cement grinding aid obtained in the invention are 99.8% and 99.6% respectively, and the yields of diethanolisopropanolamine and monoethanolisopropanolamine in the cement grinding aid obtained in the invention are 95.86% and 94.67% respectively; the minimum fineness of the cement doped with the cement grinding aid is 6.5%, the cement grinding aid has a good grinding aid effect on the cement, the cement strengths in 3d, 28d, 90d and 365d are respectively increased by 3.5 MPa, 5.9 MPa, 9.6 MPa and