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:
Apr. 14, 1987
Filed:
Oct. 25, 1985
Ian F Masterson, Danbury, CT (US);
David B George, Salt Lake City, UT (US);
Frederick A Rudloff, Salt Lake City, UT (US);
Union Carbide Corporation, Danbury, CT (US);
Abstract
A process for heating a molten material by injecting oxygen and a fuel into a molten bath of the material at a bath temperature above the spontaneous combustion temperature of the fuel, at least a portion of the fuel forming a shroud around the oxygen, and combusting the fuel to provide heat to the molten material. Where the molten material is impure copper the amount of oxygen and fuel injected may also be controlled to alternately oxidize and reduce the copper impurities and remove them from the bath. Solid material may be melted in the bath during any stage of heating or refining. In a preferred embodiment, a portion of the fuel forms a shroud around the oxygen during injection, and the oxygen forms a shroud around the remaining fuel.