Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Seiichi Watanabe0
Kenta Nakakado0
Makoto Hamamoto0
Date of Patent
April 5, 2011
0Patent Application Number
125027100
Date Filed
July 14, 2009
0Patent Primary Examiner
Patent abstract
A method of smelting copper includes: a generating step of generating blister and calcium ferrite slag from copper matte by charging the copper matte into a smelting furnace and oxidizing the copper matte; and a refining step of refining another blister from the calcium ferrite slag in an electrical furnace under a temperature condition of 1250 degrees C. to 1350 degrees C. and under a reductive atmosphere condition of oxygen partial pressure logPO2≦−9.3.
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