▎ 摘　　要

NOVELTY - The utility model claims a sand grinding device for graphene production process, belonging to the technical field of graphene production, wherein the technical solution comprises a working table horizontally arranged; the upper surface of the working table is provided with a grinding cylinder whose axial direction is parallel to the length direction of the working table; the upper side of the grinding cylinder is provided with a feeding port; the lower side of the grinding cylinder is provided with a discharging port; the grinding cylinder is rotatably connected with a main shaft whose two axial directions are parallel to the axial direction of the grinding cylinder; the two main shaft peripheral surfaces are fixedly connected with multiple grinding discs coaxially set with the corresponding main shaft; each grinding disc peripheral surface is fixedly connected with multiple convex balls; two sides of each grinding disc are fixedly connected with multiple hemispherical bumps; the inner side wall of the grinding cylinder is fixedly connected with a convex column corresponding to each convex ball position; one end of each convex column close to each other is semi-spherical. The utility model realizes the effect of improving the fineness of the graphite powder.