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) |
< CD shopping page
On the Induration Process of Iron Ore Pellets Incorporating Biomass Coal
Flavia Vitoretti1; Maria Carolina Freitas2; Camila Hosken2; Jose Adilson de Castro1; Bruno Gambarato3;1UFF - FEDERAL FLUMINENSE UNIVERSITY, Volta Redonda, Brazil; 2UFF/ EEIMVR, Volta Redonda, Brazil; 3UNIFOA, Volta Redonda, Brazil;
Type of Paper: Regular
Id Paper: 202
Topic: 3
Abstract:
The increasing demand for new technologies in the ironmaking/steelmaking field has been motivating several studies towards pelletizing process improvement. Within this context, the coal adding technique, aiming the iron ore self-reduction, constitutes a promising approach for optimizing this process, besides the environmental engagement. This paper aims the metallurgical and mechanical characterization of iron ore pellets incorporating biomass coal obtained from sugarcane straw burning in their composition. With this purpose, three experimental procedures are of concern as follows. Firstly, the volume growth of the pellets is measured using a dilatometer, which heats the samples up to high different temperatures, ranging from 1373 to 1633 K. Then, each sample is cooled back to room temperature and undergoes a microstructural characterization, with the aid of a scanning electron microscope. At last, the compressive mechanical strength of the pellets is evaluated, using a strength-testing machine. The results indicate that the coal adding - rich in Carbon - reduces the necessary temperature for sintering, decreasing the heat input and, consequently, lowering costs. This behavior is due to the fact that Carbon reacts with Oxygen arising from gas for lower temperatures compared to the conventional pure iron ore pellets.