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:
Jun. 12, 1979
Filed:
Jan. 18, 1978
Applicant:
Inventors:
Pierre J Leroy, St. Germain en Laye, FR;
Emile Sprunck, Moyeuvre, FR;
Assignee:
Creusot-Loire, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266 47 ; 266 46 ; 266270 ;
Abstract
An improved process for reducing the rate of wear and for minimizing the amount of liquid cooling agent supplied to a tuyere used for blowing oxidizing gas in the refining of molten metal. The fluid passageway of the tuyere is provided with an outlet having a reduced cross-sectional area and the cooling agent is injected at a flow rate between 0.05 and 0.14 liters per minute per centimeter of the circumference of the fluid passageway.