ALUMINA PURIFICATION BY CARBOTHERMAL REDUCTION

Authors
DESOUZA DPF DESOUZA MF
Citation
Dpf. Desouza et Mf. Desouza, ALUMINA PURIFICATION BY CARBOTHERMAL REDUCTION, Journal of materials chemistry, 6(2), 1996, pp. 233-238
Citations number
20
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry → ACNP
ISSN journal
09599428
Volume
6
Issue
2
Year of publication
1996
Pages
233 - 238
Database
ISI
SICI code
0959-9428(1996)6:2<233:APBCR>2.0.ZU;2-A
Abstract
Sodium, silicon, iron, calcium and gallium as impurities in alumina we re removed by carbothermal reduction from alumina particles between 11 00 and 1400 degrees C. Reduction of calcium and silicon oxides starts as low as 1200 and 1100 degrees C, respectively. Thermodynamics and ra te of the alumina cleaning process are discussed.