Slag Rotary Dryer
The MD dynamic coal dust separator is high-efficiency classification equipment used in coal dust preparation systems (ventilated coal mills) in the cement, metallurgical and power industries.
The equipment combines the functions of coarse particle separation, dynamic classification and vortex separation, ensuring precise control of the particle size distribution of coal dust.
Main functions:
- regulation of coal dust fineness (R0.08, R0.2)
- improvement of combustion efficiency
- reduction of the system circulation load
- increase in coal mill output
Working principle
The MD separator operates based on the combined effect of: air flow + centrifugal force + gravity.
- Coal dust enters the separator together with the air flow.
- Under the action of guide vanes, a rotating flow is formed.
- The rotor creates a centrifugal field.
- Fine particles pass through the rotor and are discharged into the dust collection system.
- Coarse particles settle and are returned to the mill.
Fineness regulation is carried out by changing the rotor rotation speed (frequency converter) and the air volume.
Design
Main components:
- inlet nozzle and material feed
- inner and outer cones
- guide vanes
- classification rotor (key element)
- housing
- outlet nozzle
- coarse fraction return system
Key components: classification rotor + guide vanes (determine the classification precision).
Advantages
- high classification precision
- wide range of fineness regulation
- low aerodynamic resistance
- high separation efficiency (80–95%)
- reduced energy consumption
- increase in mill output by 10–30%
Areas of application
- cement plants (coal dust preparation)
- thermal power plants
- metallurgical industry (coal injection)
- classification of powder materials
The MD dynamic coal dust separator is key equipment in modern fuel preparation systems. Thanks to its high efficiency, low energy consumption and flexible regulation, it significantly improves the economy and stability of production line operation.
