Phase transformations of nickeliferous laterites during preheating and reduction with carbon monoxide

This article refers to the mineralogical composition and phase transformations of Greek nickeliferous laterites and to their metallurgical behaviour, during preheating and reduction with carbon monoxide. Transformation of goethite to hematite and decomposition of chlorite and serpentine, were identi...

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Published inJournal of thermal analysis and calorimetry Vol. 100; no. 1; pp. 133 - 139
Main Authors Zevgolis, Emmanuel N., Zografidis, Charalabos, Perraki, Theodora, Devlin, Eamonn
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.04.2010
Springer
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Summary:This article refers to the mineralogical composition and phase transformations of Greek nickeliferous laterites and to their metallurgical behaviour, during preheating and reduction with carbon monoxide. Transformation of goethite to hematite and decomposition of chlorite and serpentine, were identified during preheating. Higher iron metallization was achieved for the ore in which goethite is the main iron mineral and reduction goes up to 95%, whereas it goes up to 50% for the ore in which hematite is the main iron mineral. The higher reducibility, however, seems to be due to the higher specific surface area of the goethitic type of ore.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-009-0198-x