The process
The grate cooler takes clinker at over a thousand degrees and quenches it with air blown up through the grate by a row of compartment fans, each at its own pressure. The hot air not needed for combustion is exhausted by the cooler vent or cooler ID fan through an ESP or bag filter.
The gas
Surplus cooler air carrying clinker dust, hot and abrasive. Temperature swings with kiln operation, so the fan is selected across the band rather than at one point.
Selection for this process
| Type | Guillotine for isolation, multi louver or butterfly for control, diverter where the gas is switched between two paths |
| Material | Mild steel |
| Sealing | Seal air arrangement where tight shut-off is needed on hot or dusty gas |
Types, construction and performance of the dampers.
Industries
Fans in clinker grate coolers
Dampers in other processes
Waste Heat Recovery BoilersCement Preheater KilnsVertical Roller Raw MillsRotary Lime KilnsSponge Iron Rotary KilnsBlast Furnace Hot Blast StovesSinter PlantsElectric Arc Furnace SteelmakingLadle Furnaces and Secondary MetallurgySteel Reheating FurnacesFerro Alloy Submerged Arc FurnacesCopper and Zinc SmeltingGlass Melting FurnacesCeramic Tunnel and Roller KilnsWaste IncineratorsRefinery Fired HeatersNuclear Facility VentilationBOF Steel ConvertersIron Ore Pellet Plants
Information needed to select or quote
- Gas volume and temperature. Actual flow at the inlet, normal and upset temperature, moisture.
- Dust or pollutant. Inlet loading, particle size distribution, whether it is abrasive, sticky, hygroscopic or combustible; for gases, the species and concentration.
- Required outlet. The emission limit or clean gas concentration the unit must meet.
- Site. Available space and height, material of construction preferences, and how the collected material is to be discharged.