Combined burner and lance apparatus for electric arc furnaces

US8333819B2 · kind B2 · utility

Assignee

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

Inventors

• Michael G. K. Grant · Chicago, US
• Fabien Januard · Vierzon, FR
• Youssef Joumani · Crespières, FR
• Bernard Labegorre · Paris, FR
• Jacky Laurent · Saint-Cyr-l'École, FR

Key dates

• Filing date: Jan 6, 2009
• Grant date: Dec 18, 2012
• Expiry date: Jan 9, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

Process and apparatus for melting raw material in an electric arc furnace using a flame of variable direction, the apparatus comprising a burner and a lance whereby the lance outlet opening and the burner outlet opening are not concentric and are located at a distance from one another, and whereby the lance axis forms an angle with the burner axis in the range from 10° to 40.