About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Modification of Basic Oxygen Furnace Slag Using Iron Ore Tailing and Blast Furnace Dust |
Author(s) |
Liang Wang, Wei Ren, Xiaofang Zhang, Ziwen Han, Jinlian Li |
On-Site Speaker (Planned) |
Wei Ren |
Abstract Scope |
Due to the accumulation of solid wastes, more and more attention has been paid to the recycle and reuse of basic oxygen furnace (BOF) slag. In this study, the preparation of cementitious material with BOF slag has been conducted in lab scale and was enlarged in a 50kg submerged arc furnace to figure out the feasibility of using it. Through reduction and binary basicity modification, effects of C/O (mole), processing time, and metal recovery have been studied. At 1500℃, the higher the C/O, the greater the reduction of Fe, P, and Mn, and the proper C/O was 1.5. With more and more ore tailings added, the slag reduction deteriorated. The reduction speed was lower, while the binary basicity (mass(CaO)/mass(SiO2)) climbed up. Finally, cementitious properties such as flexural and compressive strength can reach 5.2 and 45.3MPa separately, which fulfills the request of Portland cement. |
Proceedings Inclusion? |
Planned: |
Keywords |
Sustainability, Pyrometallurgy, Iron and Steel |