Effect of SiO2 addition on solid state reduction of chromite concentrate
| dc.contributor.author | Lekatou, A. | en |
| dc.contributor.author | Walker, R. D. | en |
| dc.date.accessioned | 2015-11-24T17:33:31Z | |
| dc.date.available | 2015-11-24T17:33:31Z | |
| dc.identifier.issn | 0301-9233 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/13871 | |
| dc.rights | Default Licence | - |
| dc.subject | smelting reduction | en |
| dc.subject | mechanism | en |
| dc.title | Effect of SiO2 addition on solid state reduction of chromite concentrate | en |
| heal.abstract | The effect of SiO2 addition on the solid state reduction of a Greek chromite concentrate, at 1300 and 1400 degrees C, has been studied. Addition of SiO2 in the chromite concentrate-graphite mixture generally promoted reduction at 1400 degrees C. However, there was a critical content of SiO2 after which lower final reduction degrees at higher silica contents were attained. This was due to the diluent effect of SiO2 on the contact between graphite and chromite. Increase in the carbon content of the charge resulted in higher critical silica contents. Two mechanisms of reduction took place: (i) solid state reduction by graphite and (ii) smelting reduction by dissolution of chromite into the molten siliceous slag and subsequent reduction of chromium and iron oxides at the slag/graphite and/or slag/metallic carbide interface. The addition of SiO2 did not have any significant effect at 1300 degrees C due to the non-formation of eutectic siliceous phases for the occurrence of the smelting reduction mechanism. (C) 1997 The Institute of Materials. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1997XT73000006 | - |
| heal.journalName | Ironmaking & Steelmaking | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1997 | - |
| heal.publisher | Inst Materials | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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