Method and apparatus for producing cement clinker

Details Method and apparatus for producing cement clinker Method and apparatus for producing cement clinker

C - Chemistry, Metallurgy

04

B

C04B 7/47 (2006.01) C04B 7/02 (2006.01) C04B 7/44 (2006.01) F27B 7/38 (2006.01) F27B 15/02 (2006.01) F27D 15/02 (2006.01)

Patent

CA 2227470

The invention is related to a method and an apparatus for producing cement clinker, in which the cement clinker is first of all burnt in a burning zone and then cooled in a cooling zone, wherein the cooling takes place at least partially by the delivery of fuel and steam, characterised in that in a first cooling phase the delivered fuel is mixed with the cement clinker and initially pyrolysed and the resulting pyrolysis products have a strong endothermic reaction with the steam, so that the cement clinker is quenched in such a way that at least 95 %, preferably all, of the liquid phase contained therein is transformed into glass.

L'invention se rapporte à un procédé et à un appareil de production de clinker de ciment. Le clinker de ciment est d'abord totalement brûlé dans une zone de combustion, puis refroidi dans une zone de refroidissement. Le refroidissement se fait au moins partiellement par l'amenée de combustible et de vapeur, et se caractérise en ce que, dans une première phase, le combustible introduit est mélangé avec le clinker de ciment et initialement pyrolysé. Les produits de pyrolyse obtenus ont une forte réaction endothermique avec la vapeur de sorte que le clinker de ciment subit un refroidissement tel que 95 % au moins, de préférence la totalité, de la phase liquide qu'il renferme se transforme en verre.

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