As a kind of widely used energy, environmental protection and efficient of coal will make a great contribution to the realization of low carbon targets. The combustion efficiency of pulverized coal is closely related to its fineness, the more appropriate the fineness of pulverized coal, the more quikly it burns, the higher combustion efficiency. So the use of high performance grinding equipment can greatly improve the utilization of coal thermal energy in coal processing.
Vertical mill is also known as roller mill and widely used in coal, cement, chemical industry, electric power industry, the large-scale material grinding and superfine grinding processing. It is the ideal milling industry equipment gathers of crushing, grinding, drying, classification and transportation and being used for pulverized coal preparation can make the products fineness to meet industry and national standards.
In the process of coal production, the main motor drives the grinding disc to rotate through the speed reducer, while the hot air is into the vertical mill body from the inlet. Raw coal falls into the center of mill disc by a feeding tube,
constant speed rotating disc with the centrifugal force disperses the coal outside and paves, which leads to the formation of a certain thickness of bed material, at the same time raw coal is rolled and crushed by a number of coal grinding roller. Under the driving by a continuous centrifugal force raw coal move to the disc edge. When mill powder meet hot gas and increase along with it. Powder get into the separator through the middle shell, in which process the coal powder and the hot gas are fully heat exchange and water is quickly evaporated. Classifier controls the he size of the finished product, particles greater than the specified size were separated and fell back to the mill, pulverized coal satisfied with the requirement of fineness enter into dust collector and the finished product gets into the finished product warehouse after being collected.
Compared with other grinding equipment, pulverized vertical coal mill has the following advantages:
1 High grinding efficiency, power consumption can be reduced by more than 30%.
2 Low metal consumption in unit product.
3 Bed grinding with low noise.
4 Negative pressure and low dust pollution.
5 The technical process is simple and material grinding, drying and separate can be achieved at the same time.
6 Small floor space, compact layout, system equipment with light weight and low investment for civil construction.
Using Pulverized coal vertical mill f has obvious advantages in grinding efficiency, energy consumption, environmental protection and other aspects, and its application in the field of coal grinding will become more and more popular.