Wind Swept Coal Mill
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  • Wind Swept Coal Mill

  Product Introduction

  The air-swept coal mill is an ideal coal powder processing equipment that can both grind finely and dry. It features energy saving and environmental protection. The fineness of the ground coal powder is over 85% passing through a 200-mesh sieve, and the moisture content is below 2%. It is the ideal equipment for grinding coal powder used in industrial furnaces, rotary kilns, and other applications.

  Application Fields

  Widely used in power, metallurgy, mining, cement and other industries for coal powder grinding and preparation.

  Outstanding Advantages

  1. High grinding efficiency with relatively low energy consumption.

  2. Lower metal consumption per unit product.

  3. Continuous operation with large production capacity.

  4. Fine grinding fineness with uniform particle size.

  Working Principle

  The feeding device sends raw coal into the chute of the feeding device. While the material slides down, hot air at about 300°C enters the mill through the air inlet pipe to dry the raw coal. The raw coal enters the cylinder warehouse through the feeding screw tube, which contains a certain amount of grinding media. Due to the rotation of the cylinder, the liner lifts the grinding media to a certain height, and then the impact and friction energy from the falling grinding media crushes and grinds the raw coal. While the raw coal is being crushed and ground, a dedicated induced draft fan extracts the ground fine powder along with the used hot air from the mill through the discharge device. The mixture of fine powder and hot air passes through a dedicated classifier, which separates unqualified coarse powder and returns it to the mill for regrinding.

  Technical Parameters

Specification (Diameter × Length) (m) Cylinder Speed (r/min) Grinding Media Load (t) Main Motor (KW) Main Reducer Specification (Diameter × Length) (m) Cylinder Speed (r/min) Grinding Media Load (t) Main Motor (KW)
φ1.7×2.5 24.5 7.5 95 ZD40-8 φ1.7×2.5 24.5 7.5 95
φ1.8×(3+1.5) 25 7.8 95 ZD40-10 φ1.8×(3+1.5) 25 7.8 95
φ2.2×3 22 13 180 ZD50-9 φ2.2×3 22 13 180
φ2.2×4.4 22.4 19 240 ZD60-11 φ2.2×4.4 22.4 19 240
φ2.4×(4.5+2) 20.4 20.8 355 ZD70-8 φ2.4×(4.5+2) 20.4 20.8 355
φ2.4×4.75 20.4 22 280 ZD60-8 φ2.4×4.75 20.4 22 280
φ2.6×(5.25+2.25) 19.7 28 400 ZDY400 φ2.6×(5.25+2.25) 19.7 28 400
φ2.8×(5+3) 18.7 32 500 MBY560 φ2.8×(5+3) 18.7 32 500
φ2.8×(5.75+2.25) 18.7 34 500 MBY560 φ2.8×(5.75+2.25) 18.7 34 500
φ3×(6.5+2.5) 18.3 43 630 MBY560 φ3×(6.5+2.5) 18.3 43 630
φ3.2×(6.5+2) 17.08 50 710 MBY630 φ3.2×(6.5+2) 17.08 50 710
φ3.2×(7+2.5) 17.08 55 710 MBY630 φ3.2×(7+2.5) 17.08 55 710
φ3.4×(6+3) 17.47 54 900 MBY800 φ3.4×(6+3) 17.47 54 900
φ3.4×(6.5+2.5) 17.47 54 900 JDX-80 φ3.4×(6.5+2.5) 17.47 54 900

Keywords


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Wind Swept Coal Mill
+
  • Wind Swept Coal Mill

Wind Swept Coal Mill

The air-swept coal mill is a key piece of equipment for coal powder preparation in thermal power plants and industrial boilers. It consists of a feeding device, main bearing, rotating parts, transmission device, discharge device, high-pressure starting device, and lubrication system. Inside the mill, steel balls of various sizes are installed. After the material enters the mill through the feeding port, it is crushed by the impact and grinding action of the steel balls. At the same time, the airflow blown in by the fan lifts the crushed coal powder, which is then screened by a separator. Coal powder that meets the fineness requirements enters the coal powder silo with the airflow, while coarse particles return to the mill for further grinding.

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