Reduction of roast Movat chromite ore with carbon
| Autor: | R. B. Inturi, Ramana G. Reddy |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Thermogravimetric analysis
Materials science Mechanical Engineering Inorganic chemistry Metallurgy Metals and Alloys Nucleation chemistry.chemical_element General Chemistry Activation energy Geotechnical Engineering and Engineering Geology Redox Reduction (complexity) chemistry.chemical_compound chemistry Control and Systems Engineering Materials Chemistry Chromite Carbon Carbon monoxide |
| Zdroj: | Mining, Metallurgy & Exploration. 16:46-50 |
| ISSN: | 2524-3470 2524-3462 |
| DOI: | 10.1007/bf03402808 |
| Popis: | Solid-state reduction of roast Movat chromite ore with carbon was carried out as a function of the C/FeO ratio at temperatures ranging from 800 °C to 900°C. The reduction was studied using thermogravimetric analysis (TGA). A two-stage mechanism consisting of the reduction of FeO with carbon monoxide and the regeneration of CO by the oxidation of carbon with CO2 was proposed. The rate-controlling step is the carbon oxidation reaction. A kinetic equation, that of random nucleation, was proposed. The activation energy for the reduction was determined to be 55,800 J/mole and is compared to those activation energies determined for other chromite ores. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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