Method of smelting copper
US7918917B2 · kind B2 · utility
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3References
20Claims
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Key dates
| Filing date | Jul 14, 2009 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Jul 14, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B15/0054
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.