Copious cooling pulverizer and working method thereof

The invention relates to a copious cooling pulverizer and a working method thereof. The copious cooling pulverizer comprises a motor, a hopper, a material precooling chamber, a material freezing chamber, a low-temperature mill, an induced draft fan, a cyclone separator, a bag-type dust remover, a liquid nitrogen container and a compressor. According to the copious cooling pulverizer and the working method thereof, liquid nitrogen is utilized to cool and freeze to-be-pulverized material, so that brittleness required by material pulverizing is realized; the resource is rich, colourless, tasteless and nontoxic gas can be conveniently separated, so that pollution to powdered finished product is avoided; in addition, nitrogen is an excellent antioxidant and can prevent powdered finished product from being subjected to oxidative deterioration, so that recycling of nitrogen is realized; and furthermore, the cooling capacity of the powdered finished product is fully utilized, so that energy consumption is reduced, an