Clinker grate cooler

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This presentation shows the principles of working of clinker coolers and gives some examples for clinker cooler modifications.

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Clinker grate cooler

  1. 1. Specific Surface Specificenergyrequirementof grindabilitytester
  2. 2. Types of Grate Coolers A)Traveling grate cooler
  3. 3. B) Reciprocating grate cooler
  4. 4. Grate line ConfigurationGrate line Configuration Single grate cooler Combi-coolerCombi-stage cooler
  5. 5. Mechanical Features
  6. 6. Grate Plates • Perfect in critical zones (nose and hook • Residual stresses: must be avoided by heat treatment for stress relieving
  7. 7. 1. Chromium (Cr):1. Chromium (Cr): •Melting point 1890o C •It increases the tensile strength of steels by 80-100 N/mm2 per1% Cr •Increases wearresistance •High temperature strength 3-Clinker hardness3-Clinker hardness (500 – 700) Hv 22--Nickel (NiNickel (Ni):): •Melting point 1458oC •High temperature strength
  8. 8. 1mm
  9. 9. Aircompartments &flap valves: Discharge hopper of UnderGrate
  10. 10. Grate cooler operation and controGrate cooler operation and contro
  11. 11. ClinkerTemp. AirTemp. 500500 10001000 15001500 250250 500500 750750 10001000 20-55% 0-40% 0-40% 0-45%
  12. 12. Hammer type breakerHammer type breaker
  13. 13. 11m/sm/s 4040m/sm/s 22m/sm/s Grateplate problems
  14. 14. Air beam technology
  15. 15. DesignDesign features offeatures of modernmodern grategrate coolercooler
  16. 16. Moving FrameMoving Frame 2562 ±2 840 ±1 840 ±1 682 ±1 3452±4 Moving frames Central Beam

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