C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 7/44 (2006.01) F27B 7/42 (2006.01)
Patent
CA 2731483
In the method according to the invention for operating a cement plant, the raw meal is preheated in a preheating zone, the preheated material is precalcined in a calcining zone and the precalcined material is finally sintered in a sintering zone. The cement plant is operated in such a manner that the precalcined material which is supplied to the sintering zone has an SO3 concentration of at least 5.5% by mass and a CaSO4 proportion of at least 75%, preferably 90%, of the total salt content.
Dans le procédé selon l'invention de fonctionnement d'une cimenterie, la farine crue est préchauffée dans une zone de préchauffage, le matériau préchauffé est précalciné dans une zone de calcination et le matériau précalciné est enfin fritté dans une zone de frittage. La cimenterie fonctionne de manière que le matériau précalciné alimentant la zone de frittage présente une concentration de SO3 d'au moins 5,5 % en masse et une proportion de CaSO4 d'au moins 75 % en masse, de préférence 90 % en masse sur la teneur totale en sels du matériau précalciné.
Kupper Detlev
Schulz Dietmar
Polysius Ag
Ridout & Maybee Llp
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