Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-09T08:35:23.979Z Has data issue: false hasContentIssue false

Iron ore reduction in a small fluidized bed

Published online by Cambridge University Press:  06 August 2013

Get access

Abstract

To optimize the process and improve the degree of reduction, a two-stage experiment wasdesigned. It was carried out in a micro-fluidized bed. It is operated as a differentialreactor 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. Thereducing gas and temperature in the pre-reduction stage were, respectively, pure CO and625 °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 theexperiment, a microscopic technique was also carried out. The test shows a significantinfluence of the temperature and residence time of the two-step experiment on the finalreduction degree.

Type
Research Article
Copyright
© EDP Sciences 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Man-sheng, Chu, Jue, Fang, Journal of Northeastern University (Natural Science) 23 (2002) 32
Feilmayr, C., Thumhofer, A., Winter, F., et al., ISIJ Int. 44 (2004) 1125-1133
Thumhofer, A., Schachinger, M., Winter, F., et al., ISIJ Int. 45 (2005) 151
Habermann, A., Winter, F., Hofbauer, H., et al., ISIJ Int. 40 (2000) 935
Kumaran, V., Rev. Metall. Cah. Inf. Tech. 364 (1998) 163-185
V.S. Gmbh, Analytical Instruction for Internal Use [M], Austria, Linz, 2003
N. Eder, C. Pawlik, S. Schuster, et al., Memory-Effekte von Feineisenerzen bei hohen Drucken und Temperaturen [M], Wien: Intermediate Report for VAI, 2004
Yin-he, Lin, Zhan-cheng, Guo, Hui-qing, Tang, et al., J. Iron Steel Res. Int. 19 (2012) 06-08