| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Engineering -- From Ideas to Practice: An EPD Symposium in Honor of Jiann-Yang Hwang
|
| Presentation Title |
Effect of Boron Iron Concentrate on the Strength of Preheated Iron Ore Pellets |
| Author(s) |
Li Ma, Gele Qing, Zhixing Zhao, Baojun Zhao |
| On-Site Speaker (Planned) |
Gele Qing |
| Abstract Scope |
Pellet is one of the important feeds to iron blast furnace and increased proportion of the pellet is used around the world. Pellet production is cleaner than sinter and its uniform properties allow stable blast furnace operations. Boron iron concentrate is a by-product during production of boron and contains approximately 54% Fe, 3-6% B2O3 and 10% MgO. B2O3 can form liquid binding phase inside the pellet at relatively lower temperature which reduces the energy and refractory consumption. MgO can reduce the volume expansion rate of the pellets. It was found that, up to 60% boron iron concentrate can increase the burst temperature of raw ball to 600 ℃. When the pellets were preheated at 1030 ℃, the strength of the pellets can reach more than 600N/P with 50% boron iron concentrate. This can significantly increase the productivity of the pellet and reduce the loop formation of the rotary kiln. |
| Proceedings Inclusion? |
Planned: |