Improving Zinc Recovery from Steelmaking Dust by Switching from Conventional Heating to Microwave Heating

Recently, microwave energy has attracted increasing interest for accelerating thermal reactions. This study investigated the impact of microwave heating on the zinc recovery rate from electric arc furnace (EAF) and chromium converter (CRC) dusts. The results indicated that microwave heating required...

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Bibliographic Details
Published in:Journal of sustainable metallurgy 2021-03, Vol.7 (1), p.15-26
Main Authors: Omran, Mamdouh, Fabritius, Timo, Yu, Yaowei, Heikkinen, Eetu-Pekka, Chen, Guo, Kacar, Yilmaz
Format: Article
Language:English
Subjects:
Arc heating
Chromium
Dust
Earth and Environmental Science
Electric arc furnaces
Environment
Metallic Materials
Microwave heating
Recovery
Research Article
Steel converters
Steel making
Sustainable Development
Zinc
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Summary:Recently, microwave energy has attracted increasing interest for accelerating thermal reactions. This study investigated the impact of microwave heating on the zinc recovery rate from electric arc furnace (EAF) and chromium converter (CRC) dusts. The results indicated that microwave heating required a lower temperature to recover zinc from EAF and CRC dusts compared with that in conventional thermal heating. For CRC dust, zinc recovery rates of 37.84% and 97.43% were obtained with conventional and microwave heating, respectively, at 850 °C. For EAF dust, zinc recovery rates of 79.88% and 98.20% were obtained with conventional and microwave heating, respectively, at 850 °C. The improved zinc recovery in this study was concluded to results from the rapidity of microwave heating and the interactions between the electromagnetic microwave field and the molecules of heated materials. Graphical Abstract
ISSN:2199-3823
2199-3831
DOI:10.1007/s40831-020-00319-x