Treatment of metal sulphide concentrates by roasting and electrically stabilized open-arc furnace smelt reduction
US6699302B1 · kind B1 · utility
12Cited by
8References
19Claims
0Family size
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Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating a metal sulphide concentrate which includes the steps of: a) roasting the concentrate to reduce the sulphide content of the concentrate, to a negligible value and b) melting the concentrate, under reducing conditions, in an electrically stabilized open-arc furnace, in particular a DC arc furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.