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:
Nov. 18, 2008
Filed:
Jun. 28, 2006
William John Mahoney, East Aurora, NY (US);
Michael Francis Riley, Greenwood, IN (US);
Adrian Christian Deneys, East Amherst, NY (US);
Gary Thomas Vardian, Grand Island, NY (US);
Stephen A. Manley, Hondo, TX (US);
William John Mahoney, East Aurora, NY (US);
Michael Francis Riley, Greenwood, IN (US);
Adrian Christian Deneys, East Amherst, NY (US);
Gary Thomas Vardian, Grand Island, NY (US);
Stephen A. Manley, Hondo, TX (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
A method of injecting oxygen into a melt located within a metallurgical furnace having a heated furnace atmosphere in which oxygen and fuel is injected into 1 or more nozzles having passageways of converging-diverging configuration under choked flow conditions to produce supersonic jet or jets discharged from the passageways. Fuel is injected into internal circumferential locations of the passageways so as to impart a structure to the jets being discharged that have an outer circumferential region containing a mixture of fuel and oxygen and a central region containing essentially oxygen. Such a structured jet upon discharge interacts with the furnace atmosphere to create an outer shear-mixing zone in which the outer circumferential layer mixes with the heated furnace atmosphere and auto-ignites to produce a flame envelope surrounding a supersonic jet of oxygen. The jet of oxygen and flame envelope can be directed against a melt contained within the metallurgical furnace for injection of oxygen into the melt.