Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Peng Fan0
Weol Dong Cho0
Date of Patent
September 7, 2010
0Patent Application Number
105688450
Date Filed
August 18, 2004
0Patent Primary Examiner
Patent abstract
Methods and systems for removing copper from ferrous scrap are described. Some amounts of copper in ferrous scrap are removed by oxidation and subsequent mechanical impact of the oxidized scrap. Further removal of copper from the solid scrap can be achieved by fluxing the copper oxide below the melting point of ferrous scrap using CaO—SiO2—B2O3— and Na2O—SiO2—B2O3-based slags. Using the invention, copper can be removed from ferrous scrap in a natural, cost-effective, and environmental-friendly manner.
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