2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making
| Editors: | Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 340 pages |
| ISBN: | 978-1-987820-25-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Carbothermic Reduction Kinetics of Sabzevar Manganese Ore
Bahram Inanlou1; Nasser Towhidi2; Reza Ghasemzadeh3;1DEPARTMENT OF MATERIALS ENGINEERING KARAJ ISLAMIC AZAD UNIVERSITY, Alborz, Iran (Islamic Republic of Iran); 2UNIVERSITY OF TEHRAN, Tehran, Iran (Islamic Republic of Iran); 3ISLAMIC AZAD UNIVERSITY, Karaj, Iran (Islamic Republic of Iran);
Type of Paper: Regular
Id Paper: 484
Topic: 2
Abstract:
The kinetics of carbothermic reduction of Manganese ore from Sabzevar mine deposit have been established. The investigations showed that in the temperature range of 900-1000°c, Pyrolusite (MnO2) in the ore was reduced to Manganese Monoxide (MnO). X-Ray Diffraction Analysis of the as-mined ore samples confirmed the presence of Pyrolusite as the major phase in the Manganese ores. Pyrolusite has been reduced in the different temperatures by regenerative agent (Graphite 99.99%) to Bixbyte (Mn2O3), Hausmannite (Mn3O4) and Manganese Monoxide (MnO). Isothermal roasting at temperatures of 900°C and 1000°C with roasting retention times of 300s, 600s, 900s, 1200s, 1500s, 1800s and 2100s was performed, while the weight loss was monitored by using laboratory digital balance and the phases derived from samples (1200s and 2100s) at both temperatures (900 and 1000°C) were examined by using XRD analysis. Temperature and time had a significant influence on the reducibility of the ores.
Keywords:
CO2; Carbon; Gas; Manganese;References:
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