Kinetics of oxychlorination of magnesium oxide - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Metallurgical and Materials Transactions B Année : 1999

Kinetics of oxychlorination of magnesium oxide

Résumé

The kinetics of oxychlorination of MgO by Cl2 + O2 were studied in the temperature range from 850 °C to 1025 °C, using thermogravimetric analysis (TGA). The effects of Cl2/O2 ratio, gas velocity, temperature, and partial pressure of reactive gases on the reaction rate were investigated. The oxychlorination process was characterized by an apparent activation energy of about 214 kJ/mol. The reaction orders with respect to O2, Cl2, and Cl2 + O2 at 950 °C were about −0.37, 0.98, and 0.65, respectively. Data concerning oxychlorination of MgO, Cr2O3, and MgCr2O4 contained in chromite were compared. The effectiveness of using oxychlorination to extract iron oxides contained in magnesia was demonstrated.

Domaines

Chimie Matériaux
Fichier principal
Vignette du fichier
NK_MgO_Oxychlorination.pdf (104.32 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01507841 , version 1 (14-05-2017)

Identifiants

Citer

Ndue Kanari, I. Gaballah, Eric Allain. Kinetics of oxychlorination of magnesium oxide. Metallurgical and Materials Transactions B, 1999, 30 (6), pp. 1009-1015. ⟨10.1007/s11663-999-0106-6⟩. ⟨hal-01507841⟩

Collections

CNRS UNIV-LORRAINE
58 Consultations
137 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More