The kinetics of chlorination of hematite by Cl-2 +O-2 have been investigated in the temperature range from 600 to 1025 degrees C by using thermogravimetric analysis (TGA). The effects of Cl-2/O-2 ratio, gas velocity, temperature and partial pressure of reactive gases on the reaction rate were determined. The reaction rate of Fe2O3 chlorination increased steadily with Cl-2/O-2 ratio reaching the maximum for the chlorination in absence of oxygen. The hematite chlorination process by Cl-2 + O-2 was characterized by an apparent activation energy of about 148 kJ/mol in the whole temperature range studied. The apparent reaction orders with respect to Cl-2 + O-2, Cl-2 and O-2 at 750 degrees C were about 0.71, 1.44, and -0.61, respectively. Almost the same values of reaction orders were obtained at 950 degrees C. (C) 2010 Elsevier B.V. All rights reserved.