2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 3: Takano Intl. Symp. / Metals & Alloys Processing
| Editors: | Kongoli F, Noldin JH, Mourao MB, Tschiptschin AP, D'Abreu JC |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 550 pages |
| ISBN: | 978-1-987820-26-3 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Self-Reducing Briquettes from Steelmaking Mill Scale for Use in Electric Arc Furnace
Pedro Buzin1; Mauricio Bagatini2; Bruno Flores1; Nestor Heck1; Eduardo Osorio1; Antonio Cezar Vilela1;1FEDERAL UNIVERSITY OF RIO GRANDE DO SUL, Porto Alegre, Brazil; 2FEDERAL UNIVERSITY OF MINAS GERAIS, Belo Horizonte, Brazil;
Type of Paper: Regular
Id Paper: 210
Topic: 3
Abstract:
The steelmaking industry in semi-integrated plants produces steel from ferrous scrap, using electric arc furnaces (EAF). Besides steel, this operation generates several solid wastes or by-products with low value. Among these wastes, there are some with high iron content, mainly composed of iron oxides, e.g mill scale and EAF dust, which increase the interest on recycling them in the plant where they originate. However, nowadays in Brazil most steelmaking solid wastes go to industrial landfills or for co-processing in cement industry. In light of that, the objective of the present work is to look for a solution to mill scale recycling, generated in semi-integrated steelmaking plants, inside its own productive process. Therefore, the proposed solution was to develop self-reducing briquette produced with mill scale and charcoal fines as reducing agent, aiming to use these briquettes as a minor part of electric arc furnace charge. Mill scale and charcoal fines were collected and characterized. The components were blend and molasses/CaO was used as binder. Self-reducing briquettes were made in an industrial rolling press machine. The briquettes were subjected to reduction tests carried out in laboratory scale, at temperatures of 1100, 1200 and 1260°C. The behaviour of briquettes in high temperatures was also qualitatively evaluated. The performance of briquettes and the results indicate the potential use of these self-reducing briquettes as part of electric arc furnaces charge.
Keywords:
Charcoal; Composite; Ferrous; Recycling; Sustainability; Waste;References:
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