Process for desulphurizing hot metal

US4586955A · kind A · utility

Assignee

• Thyssen Stahl AG · DE

Inventors

• Rudolf HAMMER · Dinslaken, DE
• Walter Meichsner · Krefeld, DE
• Karl-Heinz Peters · Duisburg, DE

Key dates

• Filing date: Jun 12, 1985
• Grant date: May 6, 1986
• Expiry date: Jun 12, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21C1/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for desulphurizing hot metal in a ladle, in particular in a torpedo ladle, wherein first aluminum and then, by means of a carrier gas, lime (CaO) are blown into the hot metal. The characterizing feature of the invention is that at a rate of 2-20 liters (S.T.P.) of carrier gas/kg of desulphurizing agent, a solid which evolves a gas in the hot metal is blown in together with the lime.