Method to protect the anode bottoms in batch DC electric arc furnace steel production
US6693947B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2003/168
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A batch process for an electric arc furnace (1) to manufacture steel (10) includes the steps of providing an empty furnace having a bottom (14) and sides (16) and electrodes (2, 3); adding molten metal to the empty furnace; adding other necessary ingredients through charge openings (26); applying current to provide an arc (4) and supplying oxygen through an oxygen lance (6) to react and melt the contents of the furnace and form a top slag (9) and bottom molten metal/steel (10); and stopping the reaction and pouring out all the slag through a slag tap (5) and molten metal tap (32) to provide an empty furnace for the next batch run.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.