Method and device for installing and replacing a gas permeable insert in the wall of a vessel and for the introduction of gas therethrough

US4331471A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Wilhelm Langenfeld · Düsseldorf, DE
• Jacques Brihay · Mettet, BE

Key dates

• Filing date: Jan 30, 1981
• Grant date: May 25, 1982
• Expiry date: Jan 30, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4973
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A vessel, such as a ladle or converter has a wall having extending therethrough a bore. A tube is fixed in a gas tight manner within the bore. The tube has therethrough a cylindrical passage. At least one gas permeable insert is fitted in a gas tight manner within the passage. The insert may be a pre-shaped insert or may be a mass tamped and packed into the passage. The insert may be replaced by drilling the insert from the passage of the tube and fitting a new insert within the passage. A gas connection is connected to the outer end of the tube to supply gas into the tube and through the insert into the interior of the vessel.