Special efficient grinding machine for preparing superfine light calcium carbonate

The invention relates to a special efficient grinding machine for preparing superfine light calcium carbonate, and belongs to the technical field of grinding equipment. The special efficient grinding machine comprises a rack and a grinding sleeve arranged on the rack, the upper end of the grinding sleeve is provided with a feeding end, the lower side of the grinding sleeve is provided with a discharging end, a grinding shaft is rotationally arranged in the axis direction of the grinding sleeve, a grinding device is arranged between the grinding sleeve and the grinding shaft, the grinding device comprises a primary grinding assembly, a secondary grinding assembly, a tertiary grinding assembly and a final grinding assembly which are sequentially arranged in the length direction of the grinding shaft, the primary grinding assembly is close to the feeding end, and the final grinding assembly is close to the discharging end. By arranging the primary grinding assembly, the secondary grinding assembly, the tertiary