Ranking of Injection Biochar for Slag Foaming Applications in Steelmaking
The electric arc furnace (EAF) has the potential to significantly contribute to the decarbonization of the iron and steel industry. However, during EAF steelmaking, carbon still needs to be injected into the molten slag to initiate slag foaming, which is beneficial to the energy efficiency and prote...
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Published in | Metals (Basel ) Vol. 13; no. 6; p. 1003 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
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01.06.2023
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Abstract | The electric arc furnace (EAF) has the potential to significantly contribute to the decarbonization of the iron and steel industry. However, during EAF steelmaking, carbon still needs to be injected into the molten slag to initiate slag foaming, which is beneficial to the energy efficiency and protection of the furnace. To move away from fossil carbon, biocarbon has gained attention as an injection carbon agent. In this study, two biochar candidates were added to the molten slag layer of an induction furnace for steel melting, to simulate EAF steelmaking conditions. The resultant slag foaming height was measured, and a ranking in comparison to two fossil carbon candidates was developed. The results indicate that the injection biochar sample, in the form of a bio-briquette, has a considerable degree of slag foaming capacity. More work is ongoing to develop a standardized testing methodology of ranking various injection biochar candidates for their suitability and qualification for use on a larger scale. |
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AbstractList | The electric arc furnace (EAF) has the potential to significantly contribute to the decarbonization of the iron and steel industry. However, during EAF steelmaking, carbon still needs to be injected into the molten slag to initiate slag foaming, which is beneficial to the energy efficiency and protection of the furnace. To move away from fossil carbon, biocarbon has gained attention as an injection carbon agent. In this study, two biochar candidates were added to the molten slag layer of an induction furnace for steel melting, to simulate EAF steelmaking conditions. The resultant slag foaming height was measured, and a ranking in comparison to two fossil carbon candidates was developed. The results indicate that the injection biochar sample, in the form of a bio-briquette, has a considerable degree of slag foaming capacity. More work is ongoing to develop a standardized testing methodology of ranking various injection biochar candidates for their suitability and qualification for use on a larger scale. |
Audience | Academic |
Author | Li, Delin Ng, Ka Wing Huang, Xianai DiGiovanni, Christopher |
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Cites_doi | 10.1038/s41578-021-00376-y 10.1007/s11663-019-01569-1 10.1021/acs.chemrev.2c00799 10.3390/met10091117 10.3390/met13040722 10.3390/fuels2040024 10.1007/BF02915600 10.1080/03019233.2016.1168564 10.1016/j.jaap.2015.01.027 10.1002/srin.200100121 10.1007/s11663-002-0017-2 10.1007/s11663-999-0050-5 10.1179/cmq.2005.44.1.85 10.3390/met11020222 10.1007/BF03038380 10.1007/s11663-009-9270-y |
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SubjectTerms | biochar Biomass biomass utilization Briquets Carbon electric arc furnace Electric arc furnaces Electric induction furnaces Emissions Foaming Fossil fuels induction melting furnace injection carbon Iron and steel industry Laboratories Ranking Scrap Slag slag foaming Steel industry Steel making Sulfur content |
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Title | Ranking of Injection Biochar for Slag Foaming Applications in Steelmaking |
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