Method for producing cement

Details Method for producing cement Method for producing cement

C - Chemistry, Metallurgy

04

B

C04B 7/42 (2006.01)

Patent

CA 2242380

The invention relates to a method for producing cement, in which the starting materials of the cement are sintered in a furnace. Metal sols or metal compounds are sprayed in or injected preferentially in the last third of a kiln, so as to obtain, in this way, coloured cements, as well as to exclude undesirable oxidation steps of metals (particularly chromates).

L'invention concerne un procédé de production de ciment, selon lequel les matières de départ du ciment sont frittées dans un four. Ce procédé comprend l'injection ou la pulvérisation de sols métalliques ou composés métalliques de préférence dans le dernier tier d'un four afin d'obtenir des ciments colorés tout en excluant les étapes d'oxydation indésirables des métaux (notamment des chromates).

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