Desulphuration of metals

US4209325A · kind A · utility

Assignee

• Foseco International Limited · GB

Inventors

• Stephen M. Cooper · Pittsfield, US
• Thomas H. Webster
• Helmut Jaunich · Raesfeld, DE

Key dates

• Filing date: Dec 15, 1978
• Grant date: Jun 24, 1980
• Expiry date: Dec 15, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21C7/0645
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Injectable composition for desulphurizing molten ferrous metals, especially iron, comprises alkaline earth metal, preferably magnesium, and sintered mixture of lime and at least one fluxing agent. Magnesium is preferably 8 to 60% of composition and lime preferably is 45 to 95% of the sintered mixture. Fluxing agent is preferably alumina and fluoride. Composition enables rapid and efficient desulphurization and does not give large amounts of slag.