F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 15/12 (2006.01) F27B 7/02 (2006.01) F27B 7/20 (2006.01) F27B 15/14 (2006.01) F27D 17/00 (2006.01)
Patent
CA 2388027
A method of disposing of undesirable chemical compounds in waste dust (90) generated in a first kiln (84) in the manufacture of cement clinker by using the dust and slag (96) as the feedstock material to a second kiln (94), heating the feedstock material in an oxidizing atmosphere, and raising the heat sufficient to diffuse the waste dust and the slag to form a hydraulic product such as cement clinker and lime but insufficient to volatilize previously precipitated chemical compounds in the feedstock material.
L'invention concerne un procédé permettant d'éliminer des composés chimiques indésirables dans des poussières de déchets (90) générées dans un premier four (84) lors de la fabrication de clinker de ciment. Ce procédé consiste à alimenter un second four avec lesdites poussières et scories (96) utilisées comme matériau de charge d'alimentation; à chauffer ce matériau de charge dans une atmosphère oxydante; et à élever suffisamment la chaleur pour diffuser les poussières de déchets et les scories, afin de former un produit hydraulique tel que du clinker de ciment et de la chaux, ces poussières et scories étant insuffisamment chauffées pour que les composés chimiques antérieurement précipités deviennent volatils dans le matériau de charge.
Ridout & Maybee Llp
Texas Industries Inc.
LandOfFree
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