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:
Aug. 14, 1984
Filed:
May. 18, 1983
Applicant:
Inventors:
Gerardus P Buhrmann, Velsen-Zuid, NL;
Adam Steen, Heemskerk, NL;
Assignee:
Hoogovens Groep B.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 60 ;
Abstract
A method of producing steel by the LD process using a metallurgical vessel by blowing gas through an oxygen lance onto the top of the molten metal bath in the vessel for a period of time and during the final portion of the period blowing nitrogen directly into the metal bath through a gas-transmitting wall element. The duration of the final portion is from 0 to 2 minutes. The rate of gas supply through the wall element during the final portion is 5 to 8 Nm.sup.3 /h per ton of metal in the vessel.