BURNING1.RAW GRINDING: The raw materials are very finely ground in order to produce the raw mix. 2.BURNING: The raw mix is preheated before it goes into the kiln, which is heated by a flame that can be as hot as 2000 °C. The raw mixburnsat 1500 °C producing clinker which, when it leaves the kiln, is rapidly cooled with air fans.
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