Stable idle procedure
US6387153B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/567
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A procedure for holding production of molten metal in a direct smelting process is disclosed. In situations where it is necessary to hold metal production and there is a continuing available supply of oxygen-containing gas and solid carbonaceous material, the hold procedure includes the steps of stopping supply of metalliferous feed material, continuing to inject oxygen-containing gas and solid carbonaceous material into the vessel and generating heat within the vessel to maintain the temperature of the molten bath above a temperature at which the bath freezes. In situations where it is necessary to hold production and there is a continuing supply of oxygen-containing gas but no available solid carbonaceous material, the hold procedure includes the steps of stopping supply of metalliferous feed material and injecting oxygen-containing gas and gaseous or liquid combustible material into the vessel and generating heat within the vessel to maintain the bath temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.