Achieve efficient cooling and heat regeneration

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.

Recycling heat from the clinker is important to economical, environmentally friendly cement production. In grate cooler kiln systems, the tertiary air duct helps to recover valuable energy.