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IRON REMOVAL FROM BAUXITE ORES

IRON REMOVAL FROM BAUXITE ORES

Category
Conference lecture and academic presentation
Abstract
A process of removing iron from bauxite ore is described. The ore is firstly reduced in CO and H2 atmosphere to convert iron contamination of bauxite to magnetite or elemental iron. Then material is finely crushed and passed through the magnetic separation. Short characterisation of green and preheated bauxite is done by using XRD, XRF and EPMA. Additionally effect of reduction process on total organic carbon was investigated. Experiments shows that once iron phase rendered magnetic it can be removed by magnetic separation. Iron content was reduced by 43% in comparison to untreated bauxite ore with 75% bauxite recovery as non-magnetic fraction
Client
  • Norges forskningsråd / 237738
Language
English
Affiliation
  • SINTEF Industry / Metal Production and Processing
Presented at
Bauxite Residue Valorisation and Best Practices Conference BR2018
Date
06.05.2018 - 09.05.2018
Year
2018