Influence of Temperature on Sticking Behavior of Iron Powder in Fluidized Bed

The influence that temperature has on bed pressure drop, grain size and morphology of iron fines in a hot-state visualizable fluidized bed was investigated in this work. It was found that there are both a start sticking temperature (Ts, 673 K–773 K) and a critical defluidization temperature (Tc, 923...

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Bibliographic Details
Published inISIJ International Vol. 51; no. 8; pp. 1290 - 1295
Main Authors Shao, Jian-Hua, Guo, Zhan-Cheng, Tang, Hui-Qing
Format Journal Article
LanguageEnglish
Published The Iron and Steel Institute of Japan 01.01.2011
Subjects
defluidization
fluidized bed
iron powder
pressure drop
sticking
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Summary:The influence that temperature has on bed pressure drop, grain size and morphology of iron fines in a hot-state visualizable fluidized bed was investigated in this work. It was found that there are both a start sticking temperature (Ts, 673 K–773 K) and a critical defluidization temperature (Tc, 923 K–973 K) of the iron particles in the fluidized bed. Not only the bed pressure drop but the agglomeration degree of the iron particles shows a strong dependence on temperature. It is also confirmed experimentally that the crystallized iron fines without whisker show a certain viscosity even at a temperature far from the melting point.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.51.1290