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. 12, 1983
Filed:
Dec. 04, 1981
Applicant:
Inventor:
Jean Goedert, Luxembourg, LU;
Assignee:
Arbed S.A., Luxembourg, LU;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 58 ; 75 53 ;
Abstract
A desulfurization method in which an iron melt, carefully skimmed from slag in a ladle, is covered with about 1 to 2 kg. of lime per ton of iron, the melt is deoxidized to at most 35 ppm of oxygen and is then blown with a mixture of lime, calcium fluoride and metallic aluminum in an inert gas by means of a lance immersed in the bath so that the outlet of the lance is at an average depth of about 1500 mm below the bath surface.