A method of treating cement clinker

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 7/52 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2284288

A method of treating cement clinker by grinding the clinker in a tubular mill while charging water, gypsum and possibly also a water-reduction agent to the mill at the same time. According to the invention, the water has a pH of about 9-13 and is injected into the mill during grinding of the clinkers. According to one preferred embodiment, part of the microfill agent and/or the water-reduction agent is mixed with said water of high pH-value to form a slurry, which is injected during the grinding process together with microfill agent and/or water-reduction agent in a dry state.

La présente invention concerne un procédé de traitement de clinker de ciment permettant de broyer le clinker dans un broyeur tubulaire tout en chargeant au même moment de l'eau, du gypse et éventuellement, également, un agent de réduction d'eau dans le broyeur. Selon l'invention, l'eau a un pH d'environ 9-13 et est injectée dans le broyeur pendant le broyage des clinkers. Selon un mode de réalisation préféré, une partie de l'agent de microcharge et/ou de l'agent de réduction d'eau est mélangée avec ladite eau à pH élevé, de manière à former une bouillie qui est injectée au cours du processus de broyage conjointement avec un agent de microcharge et/ou un agent de réduction d'eau à l'état anhydre.

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