The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 1984
Filed:
Aug. 25, 1982
Franz Schellberg, Sevres, FR;
Bernard Kauffeisen, Louveciennes, FR;
Manfred Oberbach, Krefeld, DE;
Gerhard Zingel, Krefeld, DE;
Gunter Wieland, Wiesbaden, DE;
Didier-Werke A.G., Wiesbaden, DE;
Abstract
Method of lining a steel-making furnace which comprises lining the bottom area of the furnace with bricks to form a first lining, lining at least a portion of the wall area of the furnace with bricks and/or a water cooling box to form a second lining, lining the first lining and a lower portion of the second lining with a first refractory material, applying a second refractory material to an upper portion of the second lining above the lower portion before heating the furnace, and then heating the second refractory material to cause hardening thereof. The second refractory material comprises magnesium oxide, green chromium oxide, clay, a phosphate, a bisulfate and water. The use of this composition for the second refractory material results in a substantial increase in the durability of the furnace lining.