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:
Jul. 10, 1990
Filed:
May. 25, 1989
Applicant:
Inventor:
Marc Solvi, Ehlange/Mess, LU;
Assignee:
Paul Wurth S.A., Luxembourg, LU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23L / ; F23L / ;
U.S. Cl.
CPC ...
1101825 ; 432 99 ; 122-66 ;
Abstract
The device is composed of several tubular elements equipped with an inner refractory lining and connected, on one side, to the wall of the furnace by means of a downpipe, an elbow, a tuyere and a nozzle and, on the other side, to a main circular pipeline arranged round the furnace and fed with preheated air. Cooling coils are embedded in the mass of refractory lining and are fed with cooling air circulating through the coils in the same direction as the preheated air. The outlet of the coils opens into the inner conduit conveying the preheated air.