Method for making steel in a liquid melt-fed electric furnace
USRE37897E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Oct 2, 2021 |
Classification
- Technology area (CPC —)General
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.