Abstract
Blast furnace dust and electric arc furnace dust are two typical solid wastes in iron and steel industry. In order to overcome the shortcomings of traditional processes, such as low metal recovery efficiency and high secondary pollution, microwave energy was applied in this study to intensify the self-reduction of core-shell BF dust-EAF dust composite pellets based on impedance matching for realizing highly efficient migration and separation of iron, zinc, and lead. By reducing the composite pellets in microwave field, it was found that under the optimal conditions of proportion of EAF dust in shell to all EAF dust in the pellet of 20%, reduction temperature of 1000 °C, and dwell time of 15 min, metallized pellets with the total iron content of 68.73 wt %, iron metallization degree of 95.87%, zinc removal percentage of 88.78%, lead removal percentage of 94.38%, and compressive strength of 190.4 N/p were obtained.
Original language | English |
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Title of host publication | 11th International Symposium on High-Temperature Metallurgical Processing, TMS 2020 |
Editors | Zhiwei Peng, Jiann-Yang Hwang, Jerome P. Downey, Dean Gregurek, Baojun Zhao, Onuralp Yücel, Ender Keskinkilic, Tao Jiang, Jesse F. White, Morsi Mohamed Mahmoud |
Publisher | Springer |
Pages | 569-579 |
Number of pages | 11 |
ISBN (Print) | 9783030365394 |
DOIs | |
Publication status | Published - 2020 |
Event | 11th International Symposium on High-Temperature Metallurgical Processing, held in conjunction with the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States Duration: 2020 Feb 23 → 2020 Feb 27 |
Publication series
Name | Minerals, Metals and Materials Series |
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ISSN (Print) | 2367-1181 |
ISSN (Electronic) | 2367-1696 |
Conference
Conference | 11th International Symposium on High-Temperature Metallurgical Processing, held in conjunction with the 149th Annual Meeting and Exhibition, TMS 2020 |
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Country/Territory | United States |
City | San Diego |
Period | 20/2/23 → 20/2/27 |
Bibliographical note
Publisher Copyright:© 2020, The Minerals, Metals & Materials Society.
Keywords
- BF dust
- EAF dust
- Impedance matching
- Microwave
- Self-reduction
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy Engineering and Power Technology
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry