Coal is relatively brittle and its hardness is relatively low. A few years ago, we may choose general milling equipment to complete this work, such as Raymond Mill, which can grind materials to 80-325 mesh. The coal processing milling machine production line, with an annual production of 800000 tons of milling equipment, needs suitable models and types. In recent years, with the improvement of pulverizer technology, LM vertical mill is more favored by customers.
At present, large-scale thermal power plants are still dominated by pulverized coal boilers. In recent years, with the increasing lack of coal resources in China, the processing and utilization of coal is also developing in the direction of refinement. In addition, new technologies such as coal chemical industry, coal to gas, coal to oil and pulverized coal boilers are becoming more and more mature. In addition, coal slime water slurry with medium and high ash content and medium and low concentration can be prepared from coal slime and flotation tail coal, which can be used for heating and combustion in gangue power generation boilers, so as to turn waste into treasure.
What are the advantages of vertical mills for coal processing? We summarize the following three points:
1. Short supply cycle, easy to use and maintain, reliable operation.
2. Safe, with explosion-proof measures, high safety factor.
3. The operation cost is low, and the energy consumption is saved by 30% - 40% compared with the ball milling system.
How can LM vertical mill achieve an annual output of 800000 tons? Let's take a look at the specific parameters of this equipment. The output of the coal mill is 7 - 128t / h. It is easy and reliable to operate. There is a device to prevent the direct contact between the roll sleeve and the lining plate of the grinding plate, so as to avoid crushing and violent vibration, and the product quality is stable; The efficiency of coal processing and milling is high. The vertical coal mill uses grinding rollers and material beds to grind materials, which has low energy consumption, and the power consumption of the milling system is 40-50% lower than that of the ball milling system.
