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1Introduction of
Grinding System and Separator
Introduction of
Grinding System and Separator
Plant Engineering
Engineering office
SCG Cement Co.,Ltd.
2 (Size Reduction or Comminution Process)
50-75% 1
3 (Size Reduction or Comminution Process)
Feed Material
1. (Crushing) 1-1.5 m ==> 100 mm
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4 (Size Reduction or Comminution Process)
2. (Raw Material Grinding) Raw Material 25 mm==> Raw Meal 10-20% R90 um Cyclone / Separator
5 (Size Reduction or Comminution Process)
3. (Cement Grinding) Clinker 25 mm ==> 1-5% R90 um Cyclone / Separator
6 (Size Reduction or Comminution Process)
4. (Coal Grinding) Coal 25 mm ==> Cyclone / Separator
7 (Size Reduction or Comminution Process)
1. 1 - 2 kWh/t 2. 5 - 15 kWh/t 3. 2 - 4 kWh/t 4. 30 - 60 kWh/t
90 - 130 kWh/t
8 (Size Reduction or Comminution Process)
1. (Compression force) 2. / (Friction / Shear force) 3. (Interparticle contact force) 4. (Impact force)
// (Compression force)
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9Tube mill - - - Impact + Friction
Roller mill - - - Compression + Friction +
Shear
Roller press - - - Interparticle Contact
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Feed Bin with Weigh Feeder
Tube Mill
Mill Filter : EP or BF
Cement Cooler
Mechanical Air Separators
Static Separatoror
Cyclone10 kWh/t 20 kWh/t
30 kWh/t
1. Tube Mill Closed Circuit ( + Mechanical Air Separator)
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Power consumption
Roller press : Tube mill ~ 50 : 50 %
Total power consumption ~ 27 kWh/t, Blaine 3200 cm2/g
Roller press
Tube Mill
SeparatorFeed Hopper
Hopper
Separator
3 kWh/t
3 kWh/t
8 kWh/t 8-12 kWh/t
1 kWh/t
2. Tube mill Pregrinding Two Stage
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3. Finish Grinding System : Vertical Roller Mill
Vertical Roller Mill
Feed Bin with Weigh Feeder Mill Filter : BF
Auxiliary Furnace
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Loesche Mill Christian Pfeiffer Mill
16
OK. Mill
END Session
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