| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
REWAS 2022: Energy Technologies and CO2 Management
|
| Presentation Title |
NOW ON-DEMAND ONLY - Circored Fine Ore Direct Reduction Plus DRI Smelting - Proven Technologies for the Transition towards Green Steel |
| Author(s) |
Sebastian Lang, Timo Haimi, Max Koepf, Roberto Valery |
| On-Site Speaker (Planned) |
Roberto Valery |
| Abstract Scope |
The hydrogen based direct reduction of iron ore plus EAF is widely discussed to replace the BF-BOF route and reduce the carbon footprint of steelmaking. One alternative to shaft furnaces is Metso:Outotec’s Circored process. Fine ore as feed for fluidized bed reactors is eliminating the cost and energy intensive pelletizing. As the only direct reduction process using 100% hydrogen as reductant, Circored has already proven its functionality in an industrial scale pilot plant.
Direct charging of hot DRI to a smelter would further increase the energy efficiency. Metso:Outotec’s rectangular 6-in-line smelting furnace combines a flash smelter body and Söderberg electrodes. This DRI smelting solution can replace small/medium sized BFs and produce hot metal with desired carbon content in existing steel plants with BOF-converters. The big furnace volume enables to process low grade iron ore with high gangue content and thus the use of BF-grade feed for DRI production. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Environmental Effects, Process Technology |