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7) Preheater
Preheater - cyclone preheaters enable the raw material of cement production to be preheated before entry into the kiln. This increases the energy efficiency of the kiln as the material is 20-40% calcined at the point of entry into the kiln.
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8) Kiln
Kiln - the kiln is designed to maximize the efficiency of heat transfer from fuel burning to the raw material.##_In the preheater tower the raw materials are heated rapidly to a temperature of about 1000°C, where the limestone forms burnt lime. In the rotating kiln, the temperature reaches up to 2000°C. At this high temperature, minerals fuse together to form predominantly calcium silicate crystals - cement clinker
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9) Cooler
Cooler - the molten cement clinker is then cooled as rapidly as possible. The ambient air used to cool the clinker is then fed into the kiln as combustion air - ensuring high utilization of the heat produced.
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Related information |
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| Cement Production (7-9)
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