| Issue |
Rev. Metall.
Volume 110, Number 4, 2013
|
|
|---|---|---|
| Page(s) | 265 - 273 | |
| DOI | https://doi.org/10.1051/metal/2013068 | |
| Published online | 06 August 2013 | |
Iron ore reduction in a small fluidized bed
State Key Laboratory of Advanced Metallurgy, University of Science
and Technology Beijing, Beijing
100083, PR
China
linyinhe2009@sohu.com
Received:
4
April
2012
Accepted:
4
June
2013
To optimize the process and improve the degree of reduction, a two-stage experiment was designed. It was carried out in a micro-fluidized bed. It is operated as a differential reactor to ensure every particle in the micro-fluidized bed is at equal temperature, concentration and residence time. The experiment used iron ore powder from Yangdi. The reducing gas and temperature in the pre-reduction stage were, respectively, pure CO and 625 °C. In the final reduction stage, the temperature and reducing gas were, respectively, 800 °C and pure CO. The residence time was between 10 min and 60 min. In addition to the experiment, a microscopic technique was also carried out. The test shows a significant influence of the temperature and residence time of the two-step experiment on the final reduction degree.
Key words: Two-step experiment / temperament / residence time / specific surface area / morphology / reduction degree
© EDP Sciences 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.