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:
Nov. 09, 1976
Filed:
Nov. 25, 1974
Paul Metz, Luxembourg, LU;
Acieries Reunies de Burbach-Eich-Dudelange S.A. ARBED, Luxembourg, LU;
Abstract
A refining ladle provided with a refractory lining contains a liquid-steel melt topped by a layer of slag. Wear of the lining, which is principally concentrated at the region in contact with the slag is minimized by displacing the upper surface of the melt relative to the lining of the ladle or other smelting receptacle so as to spread this wear over a greater area. This displacement is effected by providing the ladle with a plurality of throughgoing holes establishing different levels at which the melt surface is held for predetermined regular intervals. It is also possible to rotate the ladle continuously or discontinuously about its longitudinal axis. A hardenable patching material may be sprayed against a portion of the ladle lining when this portion is exposed by displacement of the melt and slag therein.