About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Disintegration Behavior of Vanadium–titanium Magnetite Pellets in Gas Mixtures of CO–H2–CO2–N2 |
Author(s) |
Yue Wang, Jianbo Zhao, Donglai Ma, Qingqing Hu, Yongjie Liu, Zhixiong You |
On-Site Speaker (Planned) |
Yongjie Liu |
Abstract Scope |
Vanadium–titanium magnetite (VTM) is a polymetallic symbiotic mineral which primarily contains iron, vanadium, titanium, and other valuable elements such as chromium, cobalt, nickel, etc. VTM is generally sintered or pelletized for iron making process. Under the worldwide trend of low-carbon metallurgy, hydrogen (H2) is a potential option for a further reduction of CO2 emission in both blast furnace (BF) and non-blast furnace iron making processes. H2 promotes the reduction of iron-bearing burden, but its influence on their reduction disintegration behavior deserves investigation in detail, especially for VTM burden. In this study, the disintegration behavior of VTM pellets in gas mixtures of CO–H2–CO2–N2 was investigated. The effect of gas composition, reducing temperature as well as reducing time on disintegration index was studied. The reduced samples were observed by an optical-microscope and an electron probe micro-analyzer for evaluation of reaction mode. Further, the reaction mechanism was also discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Pyrometallurgy, Titanium |