Grate Cooler

GRATE COOLER

Achieve efficient cooling

The aim of any cooling system is to cool the clinker as quickly as possible, to set and maximize C3S content. Simultaneously, it is important to capture and re-use the heat liberated by this process. In the grate cooler, the clinker enters at a temperature of around 1,200°C, rapidly spreading its heat into the grate and surrounding refractories. High refractoriness, high abrasion resistance and resistance to thermal shock are necessary, especially at the clinker downfall and bull nose.

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The cooler is effectively divided into two zones – the ‘hot’ zone and the ‘cold’ zone.

In the ‘hot’ zone, from the clinker downfall to the bypass duct and partition wall, the goal is to rapidly liberate heat and route it back to the preheater via the tertiary duct.

In the ‘cold’ zone, when clinker temperature has dropped below 800°C, it is most important to achieve a uniform temperature decline throughout the clinker body. Abrasion is the worst problem here.

Our refractory solutions are listed on the table below:

Area / Temperature (°C)Processing ConditionsMonolithic solutionsBrick solutions
Energy Saving brick solutions
Hot Zone
900- 1200°C

Bull nose

Straight Walls

Roof and Clinker Bed
Mechanical stress
Abrasion
Medium chemical attack
Borgcast/Borgflow 85/Borg gel NC 85( Super abrasion resistance)
HÖGANÄS LC S30 ( Alkali+ Abrasion)
HÖGANÄS CAST LC 75 AR ( Alkali+ Abrasion)
HÖGANÄS GUN CC S101 ( For roof gunning)
HÖGANÄS GUN LC S30 ( For other areas)
Insulation

HÖGANÄS INSUL CC 1,5L
Silox60
Alsic 500
Alex
Victor 80RK
Insulation

HÖGANÄS INSUL M E/brick
HIPOR 450/brick
Super 1100E
Porosil 23
Silox60
Alsic 500
Victor 80RK
Insulation

HÖGANÄS INSUL M E/brick
HÖGANÄS INSUL 450/brick
Super 1100E
Porosil 23
Cold Zone
200- 600°C

Clinker Bed
AbrasionBorgcast/Borgflow 85 ( Super abrasion resistance)
HÖGANÄS GUN LC S30
HÖGANÄS CAST 75 AR ( Alkali+ Abrasion)
Viking 330
Alex
HÖGANÄS INSUL M E/brick
HIPOR 450/brick
Super 1100E
Porosil 23
Viking 330
Insulation

HÖGANÄS INSUL M E/brick
HÖGANÄS INSUL 450/brick
Super 1100E/slab
Porosil 23/brick
Cold Zone
200- 600°C

Straight Walls and Roof
AbrasionHÖGANÄS CAST /GUN LC 50 AR
Viking 330
Alex
Insulation

HÖGANÄS INSUL M E/brick
HIPOR 450/brick
Super 1100E
Viking 330
Insulation

HÖGANÄS INSUL M E/brick
HÖGANÄS INSUL 450/brick
Super 1100E/slab
Porosil 23/brick