Steelmaking method with oxygen from rectification of air
US5980607A · kind A · utility
1Cited by
1References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 30, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of supplying both an oxygen steelmaking process and an ironmaking process with oxygen. The oxygen is separated from air by rectification of the air. A first stream of oxygen from the rectification to the steelmaking process. A second stream of oxygen is also supplied from the rectification to the ironmaking process. The first and second streams of oxygen are both withdrawn from essentially the same stage of the rectification and both contain from about 97 to about 98% by volume of oxygen and less than about 100 parts per million of nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.