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The Professional Manufacturer of Coal Mill
The Professional Coal Mill:
Coal mill, which is also known as coal grinding mill or coal milling machine, is used to pulverize and dry coal before it is blown into the power plant furnace in the coal-fired power plants. As the “black blood of industry”, coal is usually ground into micro size powder, which is usually to be filled into the fine power plant to generate power. Henan Hongxing is a professional manufacturer of coal mill. Combining advanced technology, the new coal mill adopts new technology on the basis of grinding rod mill.
Working Principle of Coal Mill
Raw coal is fed through a central coal inlet at the top of the pulverizer and falls by gravity to the rotating grinding table. Centrifugal action forces the coal outward to the grinding ring where it is pulverized between the ring and three grinding rollers. Grinding load, transmitted from the tension rods through the loading frame to the roller assemblies, holds the rollers in contact with the grinding ring. The rollers adjust vertically as the depth of the coal load increases or decreases.
A nozzle ring on the outside perimeter of the grinding ring feeds primary air to the pulverizer. Pyrites and tramp metal fall through the nozzle ring openings to be scraped into a rejects hopper.
A stream of low-velocity air carries the particles of pulverized coal upward where they enter the classifier inlet vanes. Fine particles travel to the burners in the primary air stream, but the larger, heavier particles are returned to the grinding zone for further pulverization.
Advantages of Coal Mill:
The coal mill is a fine powder crushing mill with excellent energy saving effect and high grinding efficiency in coal industry, especially focused by domestic and foreign counterparts in mineral deep-processing applications, which can get quickly fine products with small energy. The advantages of coal mill:
1.The efficiency of grinding is high.
2.The impact of medium frequency of coal mill is five thousand times of common ball mill.
3.The Energy Utilization is high.
4.The filling rate of coal mill can reach eighty percent to ninety percent, but common ball mill only reaches thirty percent to forty percent in filling.
5.The impurity is less.
6.The lining board adopts ceramics and media which can prevent iron pollution.
Because of excellent features, the coal mill is widely used in metal, chemical industry, metallurgy, electronics, building materials, ceramics and other industries. Hongxing supplies all kinds of coal mills to process coal ores like hard coal, woody lignite and lignite, anthracite coal and petroleum coke.
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