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. 15, 1982
Filed:
Dec. 15, 1980
Jonathan J Kim, Chelmsford, MA (US);
John F Elliott, Winchester, MA (US);
Kennecott Corporation, Stamford, CT (US);
Abstract
Molten molybdenum-copper-iron-sulfur mattes or alloys, obtained, for example, by reacting slags or other copper-molybdenum containing oxide residues or waste materials witn an iron and/or sulfide reductant, are enriched in molybdenum and copper by a pyrometallurgical process. The molten matte or alloy material is first carburized whereupon a copper-rich matte phase separates from the alloy phase and is removed. The molten alloy phase is next treated one or more times by the addition of sulfur or pyrite resulting in the formation of additional copper-rich matte as a separate phase which is separated after each treatment, leaving an alloy of molybdenum and iron of reduced Cu content. Finally the alloy is desulfurized to provide a commercial product.