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:
Feb. 06, 1979
Filed:
Aug. 06, 1976
Applicant:
Inventor:
Pierre Leroy, Saint-Germain-en-Laye, FR;
Assignee:
Creusot-Loire, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B / ; C21C / ;
U.S. Cl.
CPC ...
266268 ; 266186 ;
Abstract
In the blowing of smelting shaft furnaces tuyeres are used which are not water-cooled and which comprise three concentric conduits leading directly into the furnace, the central conduit receiving the hot blast, the intermediate conduit receiving an oxidizing gas which is not preheated and the outer conduit receiving a fluid or emulsion containing hydrocarbons.