• Cement Raw Mill
  • Cement Raw Mill
  • Cement Raw Mill
  • Cement Raw Mill
  • Cement Raw Mill
  • Cement Raw Mill

Cement Raw Mill

Grinding Plate Dia.: 1400-2700(mm)

Output(t/h): 50-250

Applied material: quartz, feldspar, calcite, limestone

Application: Cement Plant

cement vertical raw mill is also called raw meal vertical roller mill, and it is the core equipment applied for cement raw meal grinding.

Our Advantage

1

    High grinding efficiency and low power consumption. This kind of machine consumes 20-30% lower power. And with the growing of moisture content, its energy-saving effect will be more obvious.

2

    Strong dry ability. Air is used to send materials, and the temperature of the air can be controlled according to the moisture content of materials.

3

   Large feeding size. The feeding size can be as large as 5% of the diameter of the grinding diameter, that is, 40 to 100mm. Therefore, secondary grinding is unnecessary for large-scale and medium vertical mill.

4

    Stable chemical composition and even particle size products.

5

    Simple process flow and small in size. There is a segregator in the cement vertical raw mill, which makes powder separator and elevator unnecessary. Grinded dusty air can directly enter into the environmental protection equipment.

6

    Low noises, few dust, and environment friendly. There is no direct contact between the grinding rollers and grinding disc, so there is no impact sound caused by the colliding between the steel balls or between the steel ball and lining plate.

    Raw mill is mainly used for grinding raw materials in cement plant and is also suitable for grinding mineral ore and other materials in metallurgy, chemical, power plant. It can work in open circuit or closed circuit with separator. Raw mill has features of various materials application, continuous running, big grinding rate, easy control of product fineness. 
     
    Raw mill produced by ZK Corp has two types: Ball Mill for Raw Meal Grinding and Vertical Mill for Raw Meal Grinding. 
    1. Ball Mill for Raw Meal Grinding:Raw meal ball mill has features of various materials application, continuous running, big grinding rate, easy control of product fineness.
    2. Vertical Mill for Raw Meal Grinding:In the process of Dry Type Cement Production Line, Vertical Mill is mainly used for raw meal preparation. Compared with Ball Mill, it has the advantages like energy saving.
     
     
    Production Process (Vertical Mill for Raw Meal Grinding)
    The raw material from dosing station after weighing, is transported into inlet of vertical mill by belt  conveyor,  then fed into rotary air lock valve of vertical mill together with outer recycle materials, after grinding, drying, and separating, the coarse material comes back to grinding disc for grinding again. The qualified product will be brought into cyclone filter through separator. The product collected by cyclone filter and powder from bag filter at the kiln inlet comes into raw meal homogenizing silo by chute, bucket elevator and so on.
     
    A part of exhaust gas from cyclone filter comes back into air inlet of vertical mill and the other will be discharged into atmosphere through bag filter bag filter, fan and chimney at kiln inlet. The drying heat resource of raw meal vertical mill is from exhaust gas
    of preheater by high temperature fan.
     

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