Combustion process applicable to the manufacture of cement

US6375456B1 · kind B1 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Jacques Dugue · Paris, FR
• Ovidiu Marin · Paris, FR
• Thierry Borissoff · Paris, FR
• Dora Sophia Alves · Paris, FR
• Michel Viardot · Paris, FR

Key dates

• Filing date: Jun 22, 2000
• Grant date: Apr 23, 2002
• Expiry date: Jun 22, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27B7/36
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Combustion process especially applicable to cement works, in which process it is desired to use fuels which are difficult to ignite. To do so, a flame comprising a primary zone and a secondary zone is created. The hot primary zone is created using an oxy-fuel flame, which makes it possible to preheat the fuel which is difficult to ignite so as to raise it to the suitable temperature in the secondary zone where it burns, with air, in order to create the main flame. Applications: cement, metallurgy, glass, etc.