Most of China's thermal power plants are through the combustion of coal to achieve efficiency to promote power generation equipment for power generation, from the mill can be seen, the power plant using ore milling equipment to the raw ore milling equipment into coal, is conducive to coal in the boiler full Burn to improve overall capacity. According to the working speed of the working parts of the pulverizer, the pulverizer is generally divided into three different types: high speed, medium speed and low speed. The medium speed pulverizer will become one of the more choice of thermal power plant. The working principle of the ore milling equipment is that the raw coal in the coal bucket should first be sent to the pulverizer and then pulverized into the pulverized coal, and then the pulverized coal is blown into the exhaust fan by the hot air and then into the boiler Of the furnace burning. Thermal power plant pulverizer is an important guarantee for the full combustion of pulverized coal in power generation, so the selection of pulverizer drawings is particularly critical. Power plant mill speed is generally 16 ~ 25r / min or so, are low-speed steel ball mill, and the thermal power plant mill volume compared to other machines more bulky, very many components, so the boiler rotating machinery One of the most complex turning machines.