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:
Jan. 03, 1978
Filed:
Jan. 27, 1977
Applicant:
Inventors:
Jean Saleil, 42100, Saint-Etienne, FR;
Maurice Debras, 42240, Unieux, FR;
Jean-Yves Malefant, 42240, Unieux, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ; C21C / ;
U.S. Cl.
CPC ...
75 12 ; 75 59 ; 75 60 ; 751305 ;
Abstract
In a method of making chrome steel in an electric arc furnace, a charge of chrome-bearing molten metal in the furnace is decarburized by blowing into the charge a jet of pure oxygen and water vapor through a double lance consisting of two concentric tubes and extending into the furnace through a wall or the roof of the furnace, the end of the lance being submerged in the charge and surrounded by a medium which protects it against high temperature wear.