Cement raw material grinding aid and preparation method thereof

The invention discloses a cement raw material grinding aid which is prepared from sodium carbonate, lignosulfonate, polycarboxylate, hydroxyalkyl sulfamic acid ester, polyhydroxyalkyl tertiary amine, polyether polyol and water. The cement raw material grinding aid can give full play to the dispersion effect of the lignosulfonate, the polycarboxylate and other raw materials on cement raw materials; the cement raw material has strong dispersibility on a calcareous raw material, a clay raw material and an iron oxide raw material in the cement raw material, and the fineness of raw material particles can be greatly reduced; the reaction speed of raw material particles in the clinker firing process can be increased, the reaction completion degree is improved, and the clinker production speed and quality are improved. And the characteristic of low melting point of sodium carbonate can be utilized to adjust the liquid phase amount in the raw material sintering process, so that the sintering reaction speed is increase