Blast heating apparatus for blast furnaces

US4508504A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Friedrich Eschmann · Ginsheim-Gustavsburg, DE
• Gunter Gelsdorf · Nordenstadt, DE
• Peter Nold · Bingen, DE
• Gotthard Staats · Beckingen, DE
• Gerhard Subat · Sankt Augustin, DE

Key dates

• Filing date: May 5, 1983
• Grant date: Apr 2, 1985
• Expiry date: May 5, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21B9/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A blast heating apparatus includes an inner metal shell having therein a refractory lining. An outer metal shell surrounds at least a portion of the inner metal shell and defines therewith a double shell structure. Spacers are positioned between the outer and inner metal shells to define therebetween a gap. At least a portion of such gap is filled with a pourable dry material having a grain size of up to 8 mm and a heat conductivity of at least approximately 1.5 W/Km.