Method for making steel in a liquid melt-fed electric furnace
US6238452A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1998 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Dec 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for making steel in an electric furnace, wherein a predetermined amount of liquid melt is fed into the electric furnace. The method comprises the steps of (a) continuously feeding a controlled flow of liquid melt into the furnace without interrupting the heating from the electric arc, (b) continuously injecting a refining gas into the furnace before the C and/or Si content of the metal bath reaches a predetermined value, until the end of the feeding process, and (c) pursuing the injection of refining gas after the predetermined amount of melt has been fed into the furnace, until the target value for the C and/or Si content of the metal bath has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.