- Title
- Iron ore sinter structure development under realistic thermal conditions
- Creator
- Liu, Dongmei; Evans, Geoffrey; Loo, Chin Eng
- Relation
- Chemical Engineering Research and Design Vol. 130, p. 129-137
- Publisher Link
- http://dx.doi.org/10.1016/j.cherd.2017.09.025
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2018
- Description
- In iron ore sintering, the bed structure transformation is caused by coalescence process occurring at flame front which determines sinter micro-structure. This study aims at how this can be affected by realistic thermal conditions. Analogue iron ore sinter mixes were sintered in an Infrared furnace and the micro-structure was studied by measuring porosity, pore size and circle factor. Pore property analysis results showed that increasing maximum temperature, lengthening holding time and slowing heating rate have led to a reduced porosity and more round pore structure. The mechanism of coalescence and densification in iron ore sintering has been explored for the purpose of understanding and quantifying how sinter micro-structure develops and is affected by flame front speed in sintering. The theoretical calculations and experimental results indicated that thermal conditions does have a large impact on micro-structure development. Finally, proposed was a reasonable diagram for micro-structure development in sinter under realistic thermal conditions.
- Subject
- iron ore sintering; coalescence; densification; pore properties; micro-structure development; thermal condition
- Identifier
- http://hdl.handle.net/1959.13/1394765
- Identifier
- uon:33757
- Identifier
- ISSN:0263-8762
- Rights
- © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
- Language
- eng
- Full Text
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