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. 21, 1983
Filed:
Oct. 14, 1981
Applicant:
Inventors:
Matthew J Blair, Niles, OH (US);
Thomas A Wiktorowski, Parma Heights, OH (US);
W Dale Wogan, Warren, OH (US);
Assignee:
Republic Steel Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 58 ; 75 53 ;
Abstract
A method and apparatus for concurrent introduction of molten steel and gas-fluidized chemical steel additives, such as chemical desulphurants, into a teeming ladle 10. Injection apparatus includes a lance 52 arranged to remain with the vessel. Introduction of gas-fluidized additives through a lance opening 81 is commenced while a charge of molten steel is introduced into the ladle. The lance is unobstructed at its discharge end and in one embodiment is carried directly by a discharge stopper 31'.