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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Reduction of Zinc Ferrite Contained in Steelmaking Dusts by Co - Co2 Gas Mixtures
Mery-Cecilia Gomez-Marroquin1; Jose D Abreu2; Raimundo Nonato Rodrigues Filho3; Nilton Cardenas Falcon4; Helio Kohler5;1UNIVERSIDAD NACIONAL DE INGENIERIA-UNI, Lima, Peru; 2PUC-RIO, Rio de Janeiro, Brazil; 3PONTIFICAL CATHOLIC UNIVERSITY OF RIO DE JANEIRO, Rio de Janeiro, Brasil; 4METALLURGY MATERIALS AND MINERALS PERUVIAN ASOCIATION, Lima, Peru; 5TECHN-OS TECHNOLOGICAL INNOVATIONS, Rio de Janeiro, Brazil;
Type of Paper: Regular
Id Paper: 55
Topic: 3
Abstract:
In this work, the reaction between an equimolar synthetic zinc ferrite sample and a mixture of CO - CO2 gases was studied to evaluate the effects of temperature and CO content. The temperature ranged from 1073 to 1373K, and the gas mixtures from 50% to 100% of CO. These tests were supported by physical, chemical, structural and microscopic characterizations of both, initial zinc ferrite generated in laboratory and the remained after reaction. It was observed that the temperature and CO content were the main factors affecting the zinc ferrite reduction. The maximum reductions indexes obtained in these experiments were 85%, for 100% CO at 1373K, in 105 min, and 52%, for 50% CO at 1373K, elapsed 105 min. The Apparent Activation Energies obtained in this study were 55.60 and 91.71 kJ/mol, for 100%CO and 50% CO-50% CO2, respectively.
Keywords:
Dust; Recovery; Waste;References:
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