NOVELTY - A silicon carbide grinding material comprises polyethylene glycol; film-forming agent; dispersant; surface active agent; antifoaming agent; metal corrosion inhibitor; and non-standard silicon carbide grinding material.    USE - Silicon carbide grinding material useful for the manufacture of solar silicon chip cutting mortar.    ADVANTAGE - The grinding material provides mortar having good dispersing ability, high property, and uniformity.    DETAILED DESCRIPTION - A silicon carbide grinding material comprises polyethylene glycol; film-forming agent; dispersant; surface active agent; antifoaming agent; metal corrosion inhibitor; and non-standard silicon carbide grinding material. About 0.3-5 parts film-forming agent and 48-72 parts non-standard silicon carbide grinding material are added to 40-45 parts polyethylene glycol liquid, stirring for 120-180 minutes to obtain wet non-standard initial silicon carbide grinding material mixture. About 0.1-3.5 parts dispersant is added to silicon carbide sand material primary mixture, and stirred for 80 minutes, 12-18 parts non standard silicon carbide sand material is added in the mixture, and stirring for 60 minutes. About 0.05-2 parts surface active agent and 0.03-3 parts defoaming agent are added to the mixture, speed is controlled for 30-60 minutes in dropping, and 0.02-1.5 parts metal corrosion inhibitor is added and stirred for 2 hours at the mixture, the wet nonsurface modifying treatment of the silicon carbide grinding material, and then the formed wet non-standard sand stirring 1 hour after wet non-standard silicon carbide material. Detection is qualified, stopping stirring for 1-3 hours in off the bottom of grain diameter D50 is 10.2-11.8 mu m in mortar grain diameter DO is more than 30 mu m of coarse sand or D50 of 6.1-7.1 mu m mortar in thick sand DO of more than 21 mu m by special sand separator to non-standard sand. Stirring for 4-6 hours is stopped off device in the upper mortar, with sand grain diameter D99 of less than 3 mu m or fine sand D50 of 6.1-7.1 mu m mortar in D99 of less than 2. Then starting to stir for 2 hours, and detecting wet non-standard silicon carbide sand of the density, and detecting after packaging. An INDEPENDENT CLAIM is included for manufacturing a silicon carbide sand material comprising:    (A) dissolving 2.5 parts film-forming agent, and adding 52 parts non-standard silicon carbide grinding material slowly into 4 parts polyethylene glycol liquid, stirring and adding for 180-200 minutes, to obtain wet non-standard initial silicon carbide grinding material mixture;    (B) after dripping 0.8 parts dispersant to the sand material primary mixture, stirring for 80 minutes, adding 15 parts non-standard silicon carbide sand material split, segmented into the mixture, then stirring for 60 minutes, adding 1 part surfactant and 0.5 parts defoaming agent in the mixture, and dropping speed control for 30-60 minutes;    (C) adding 0.2 parts metal corrosion inhibitor into the mixture, stirring for 2 hours to obtain wet silicon carbide grinding material, then sand stirring for 1 hour after sand density and viscosity;    (D) detection is qualified, stopping stirring for 2 extracted in the bottom mortar;    (E) stopping stirring for 2.5 hours when off device in upper part mortar; and    (F) stirring for 2 hours, detecting wet non-standard silicon carbide sand density, after adjusting; and packaging.