Investigation of Slag Foaming by Additions of Briquettes in the EAF during Stainless Steel Production
2015 (English)In: Steel Research International, ISSN 1611-3683, Vol. 86, no 2, 146-153 p.Article in journal (Refereed) Published
Nowadays, an effective application of energy required for stainless steel production in the electric arc furnace (EAF) by a slag foaming practice and recycling of waste products play two of the most significant roles for a sustainable steel production. In this study, briquettes were used to obtain a combined slag foaming and waste product reduction in the EAF process. Briquettes with different densities produced partly from waste products were tested in an industrial scale to study slag foaming in the EAF process during stainless steel production. The slag foaming tendency was determined based on visual estimations of slag foaming, evaluations of the slag density before and after addition of different briquettes, and by calculating a foaming index. The influence of the main parameters of briquettes (composition, density) and the furnace slag (composition, basicity, and, etc.) on slag foaming was studied. It was found that both heavy and light briquettes can be used for slag foaming. The heavy briquettes, with FeCr, produce about half the amount of gas compared to the light briquettes, without FeCr. The main part of the gas, >80%, was generated during the first 2-3min, Moreover, the highest slag foaming rate was obtained for slags with a basicity in the range of 1.31-1.49.
Place, publisher, year, edition, pages
2015. Vol. 86, no 2, 146-153 p.
briquettes, EAF, recycling, slag foaming, stainless steel
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-144632DOI: 10.1002/srin.201400036ISI: 000349219300006ScopusID: 2-s2.0-84922914563OAI: oai:DiVA.org:kth-144632DiVA: diva2:714666
FunderSwedish Energy Agency
QC 20150309. Updated from accepted to published. Previous title "Investigation of Slag Foaming by Using of Foaming Briquettes at the EAF during Stainless Steel Production".2014-04-292014-04-292015-03-09Bibliographically approved