The particle size of slack coal is 0 ~25 mm. The slack coal is often used as combustion agent in steel company, thermal power plant, etc. The consumption of coal is quite large in thermal power plants. Take a 1 million kW thermal power plant for example, coal consumption amounts to 11,000- 13000t a day, which takes 60% ~ 80% of the cost for generating electricity. It is advisable to adopt appropriate coal mill for coal grinding. This can not only improve the utilization of coal, but also contribute to energy saving, environmental protection, economic benefits.

According to the market research, vertical coal mill is used most widely. There are also other grinding mils like traditional Raymond mill, roller mill, trapezium mill, etc. can also meet different requirements for grinding coal into different sizes and types. Customers can choose an appropriate coal according to their specific needs.

Pressure roller grinding machine, improved version of Raymond milling machine increases the performance stability and enhances the grinding fineness and efficiency.

Trapezium mill is based on and improved from Raymond milling machine and Pressure roller grinding machine, its performance is more superior. From the roll installation to the pressurization system design, the higher level of technical concept can be seen. Trapezium mill has replaced the traditional Raymond milling machine in the market, and features high capacity, stable operation. It has become the most common types of grinding machine.

Vertical grinding mill produced by precise control can process large quantities of materials and it features precise grinding size, and mass production. It has become the favorite equipment for large enterprises. Because of its large capacity and complex technology, it is not suitable for small and medium-sized enterprises.

The above are the most common grinding mills. With increasingly worsening environment, coal power plants should utilize coal more efficiently. This matters not only the profits of the power plant, but also the social development and environmental protection.