Iron oxides of reduced chloride content

US6863877B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Walsdorff · Ludwigshafen, DE
• Hermann Petersen · Burghausen, DE
• Klaus Harth · Altleiningen, DE
• Michael Baier · Frankfurt, DE

Key dates

• Filing date: Jul 17, 2001
• Grant date: Mar 8, 2005
• Expiry date: Apr 22, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for removing chloride from chloridic iron oxide comprises mixing said chloridic iron oxide with an acid and subsequently conducting a thermal treatment at from 50 to 1300° C.