Large horizontal sand mill

The invention discloses a large horizontal sand mill, and relates to the technical field of sand mills, the large horizontal sand mill comprises a machine base and a treatment cylinder, the treatment cylinder comprises a cylinder body, the cylinder body is fixedly arranged above the machine base, the inner side wall of the cylinder body is of a conical structure, and a discharging cover is fixedly arranged at one end of the cylinder body. The machine base is arranged, the processing barrel is arranged above the base, the material return pipe is arranged in the processing barrel, and materials collide with the grinding medium for multiple times in the processing barrel after being mixed, so that grinding of the materials is achieved; after moving to one end of the processing cylinder, the ground material is separated by the sieve plate and then discharged, and the grinding medium can flow back to the material entering position along the material returning pipe, so that the grinding medium is mixed with subsequ