Converter
US6346212B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Apr 25, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/4653
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A converter includes a side wall, and a tapping hole placed at the side wall to allow passage of molten steel. A refractory plug is axially spaced apart from the tapping hole with a predetermined distance. The distance between the refractory plug and the tapping hole is in the range of 3-5 d where d indicates the inner diameter of the tapping hole. The refractory plug has one or more heat resisting steel tubes. When the molten steel is discharged through the tapping hole of the converter to the ladle, 0.1-0.4 Nm3/min of inert gas is introduced into the converter through the refractory plug to prevent leakage of the carried over slag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.