Hydraulic-binder rotary-furnace operation

US10480858B2 · kind B2 · utility

Assignee

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

Inventors

• Alex Grassi · Milano, IT
• Dirk Hoelscher · Düsseldorf, DE
• Bertrand Leroux · Breuillet, FR
• Jacques Mulon · Massy, FR
• Xavier Paubel · Montigny-le-Bretonneux, FR
• Remi Tsiava · Corbeil-Essonnes, FR

Key dates

• Filing date: Feb 26, 2015
• Grant date: Nov 19, 2019
• Expiry date: Feb 26, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27B2007/005
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Method of operating a rotary furnace for the production of hydraulic binder so as to reduce ring formation therein, whereby the longitudinal temperature profile in the furnace is varied during furnace operation by injecting at least one fluid other than the main fuel(s), the primary oxidizer and hot air from the material cooler with at least one continuously or discontinuously varying injection parameter.