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Vertical Roller Mill in Cement Industry

Vertical Roller Mill in Cement Industry

How does the Vertical Roller Mill work?

The cement material flow through the separator, the effect of the guide vanes and the rotor, the coarse material from the hopper to the cone disc, together with the grinding of the cement material powder- gas flow, collecting apparatus of the system and collect the product, the cement material during contact with the gas to be dried to the required moisture products, by adjusting the angle of guide vanes and the rotor speed separators, can be different fineness of products.

Main Structure of Vertical Roller Mill in Cement Industry

  • Vertical Roller Mill in Cement Industry mainly consisted of the separator, roller, disc, pressure device, reduce, motor, shell and other components.
  • Roller compacted cement material for grinding is the main components . Vertical Roller Mill in Cement Industry built with two pairs of rollers, each roller mounted on the same shaft to rotate at different speeds.
  • Disc fixed to the gearbox output shaft , disc upper material bed, the bed material with an annular groove.
  • A splitter is an important component determines the fineness of which the variable speed transmission device, the rotor, guide blades, the housing , meal blanking cone hopper, the outlet and other components.
  • Pressure device is called grinding pressure parts provided by the high-pressure oil stations, hydraulic cylinders, rod, accumulators, etc., to be able to exert enough pressure on the roller so that the cement material crushed.

Technical Advantages of Vertical Roller Mill in Cement Industry

  • High grinding efficiency, Vertical Roller Mill in Cement Industry using the principle of cement material bed grinding materials, low energy consumption, grinding system power consumption 20-30% lower than the milling system, but with the increase in raw water, energy-saving effect is more significant.
  • Drying capacity, Cement Industry’s Vertical Roller Mill using air transportation of materials, materials in grinding large water inlet temperature can be controlled so that products reach the final moisture in the vertical Roller Mill can be drying up water 12-15 % of the material, even though the dry milling, drying only 3-4% moisture of the cement material.
  • Large particle size material into the mill, roller diameter of up to about 5%, typically 40-100 mm, therefore, medium and large Vertical Roller Mill can save second breaking in Cement Industry.
  • Chemical composition and stability, particle size distribution are homogeneous, because the material in the vertical mill residence time is only 2-3 minutes, while the ball is 15-20 minutes, so the use of vertical mill, the chemical composition can be quickly measurement, calibration, product chemical composition of small fluctuations, is conducive to homogenization, in addition, vertical role mill qualified products separated in time, to avoid over-grinding, the product fineness can quickly change the separator rotor speed, granularity are Sarkozy, is conducive to calcination.

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