Iron oxides with a higher degree of refining

US7186395B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Walsdorff · Ludwigshafen, DE
• Michael Bajer · Mannheim, DE
• Reinhard Korner · Bischofswerda, DE
• Klaus Harth · Altleiningen, DE
• Gerald Vorberg · Ludwigshafen, DE
• Wilhelm Ruppel · Mannheim, DE

Key dates

• Filing date: Apr 3, 2002
• Grant date: Mar 6, 2007
• Expiry date: May 29, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/01
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Iron oxides are upgraded by calcining at from 700 to 1200° C.