Superfine pulverizer set consists of a material bin, mechanical pulverizer, fan, cyclone, vibrating screen, liquid nitrogen tank, etc., wherein, the cryogenic mill system with liquid nitrogen as the cold source, the crushed material after cooling at low temperatures to achieve embrittlement easily crushed state into the mechanical crusher cavity through the high-speed rotation of the impeller, the material and the blade, fluted disc, material and the material between the repeated impact, collision, shear and friction to the crushing effect. After being crushed material flow screen classifier classification and collection. Did not meet the requirements of the fineness of the material bin returns to smash, most of the cooling air recycling bin returns.