The blast furnace pulverized coal injection system has a very wide range of uses in the electric power, steel and metallurgical industries. In the whole system, the preparation of pulverized coal is an important link, and the quality of the pulverized coal formed by the processing of raw coal determines the operating efficiency of the entire system. Due to the high requirements of pulverized coal and the large output, traditional coal grinding mill cannot meet its requirements. As a result, more and more customers turn their attention to the new vertical coal mill. HCMilling(Guilin Hongcheng), as the manufacturer of coal injection vertical roller mill, our HLM pulverized coal vertical roller mill has been widely used and recognized in the coal injection powder vertical roller mill production line. The following is an introduction to the technological advantages of pulverized coal vertical roller mill processing pulverized coal:

Coal injection powder vertical roller mill

The complete blast furnace pulverized coal injection process should include the raw coal storage and transportation system, the pulverizing system, the pulverized coal conveying system, the injection system, the gas supply system and the pulverized coal metering system. The computer control center of the coal injection system. The pulverizing system is an important part of the blast furnace pulverized coal injection process, and the vertical roller mill processing pulverized pulverized coal is the main process of the pulverizing system. The preparation of pulverized coal by vertical roller mill processing refers to the processing of raw coal into pulverized coal with particle size and water content that meet the requirements of blast furnace injection through vertical coal mill under permitted economic conditions. The pulverizing system is mainly composed of feeding, drying and grinding, powder collecting and dust removal. In bituminous coal pulverizing, corresponding inerting explosion-proof explosion-suppression and corresponding monitoring and control devices must also be set. The process of vertical roller mill processing pulverized coal: the raw coal is sent to the middle of the turntable by the coal drop pipe, and the centrifugal force generated by the rotation of the turntable makes the coal move continuously to the edge of the turntable, and the coal is crushed when it passes under the rollers. A ring of blocking rings is installed on the edge of the turntable, which can prevent the coal from slipping directly from the turntable. After the drying air is introduced into the air chamber from the air duct, it enters the upper part of the turntable through the annular air duct around the turntable at a speed of more than 35m/s. Due to the entrainment effect of the airflow, the pulverized coal is brought into the coarse powder separator on the coal mill. There is also a circle of blades that rotate with the turntable around the turntable. The function of the blade is to disturb the airflow, so that the qualified coal powder enters the coarse powder separator on the upper part of the coal grinding mill.

What are the technological advantages of vertical roller mill processing pulverized coal? According to the speed of the coal mill, it can be divided into low speed coal grinding mill and medium speed coal mill. The low-speed coal mill is also called steel ball mill or ball mill, and the cylinder speed is 16～25r/min. The vertical coal mill is a medium-speed coal mill with a rotating speed of 50-300 r/min. The vertical roller mill is better than the steel ball mill in processing pulverized coal, and it is the coal mill widely used in the new pulverizing system at present. The process of processing pulverized coal by vertical roller mill has the advantages of compact structure, small floor space, low capital investment, low noise, low water consumption, low metal consumption and low coal grinding power consumption. The power consumption of vertical roller mill processing pulverized coal is obviously reduced during low-load operation, and the power consumption per unit pulverized coal does not increase much. When the rotary coarse powder separator is used, the pulverized coal has good uniformity and high uniformity index.

HCMilling(Guilin Hongcheng), as a manufacturer of pulverized coal grinding mill, has rich customer cases and mature technical experience in the vertical roller mill processing of pulverized coal, which provides strong equipment support for the customers of vertical roller mill processing pulverized coal. If you have pulverized coal vertical roller mill needs, please contact us for details and provide follow information to us:

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