About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Decarburization and Chromium Conservation Model in AOD Refining Process of 304 Stainless Steel |
Author(s) |
Jun Cai, Jing Li |
On-Site Speaker (Planned) |
Jun Cai |
Abstract Scope |
Decreasing chromium loss in the decarburization stage of the AOD (Argon Oxygen Decarburization) refining process is one of the key technologies of 304 stainless steel smelting. Based on the theoretical conditions and production status of a 75 t AOD furnace, a decarburization and chromium conservation mathematical model for 304 stainless steel was established. The model can predict whether oxidizing chromium occur in different situations, and can calculate the required CO partial pressure and the gas supply parameters for meeting the requirements of decarburization and chromium conservation under different smelting conditions. Through the application of the model in the 75 t AOD furnace, the side and top combined blowing parameters were optimized, the burning loss of chromium in molten steel can be reduced ideally. Furthermore, the average consumption of ferrosilicon in the reduction stage has been reduced by 379.2 kg, and the average smelting cycle was shortened by 6.4 min. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Process Technology, Pyrometallurgy |