Reductive roasting of ilmenite ore by carbon in the presence of sodium carbonate was carried out at 1000-1200°C for periods of up to 180 min. Additions of sodium carbonate of up to 30 wt% of the ore enhanced the reduction efficiency. The maximum metallization obtained at 1200°C was about 85%, and the rest of the iron exists in the form of sodium-iron-titanates. The type of sodium compound formed in the final product depends on the roasting temperature. The reduction rate data under isothermal conditions were represented by a phase-boundary reaction model for conversions of up to 70 wt%. The apparent activation energy obtained is about 67 kJ Imol. Magnetic separation of roasted products gave different magnetic fractions having different Fe/Ti02 ratios (ranging from 2-3) as well as a non-magnetic fraction that was low in iron and suitable for titanium dioxide production.Resume-Le grillage reductif du minerai d'ilmenite par Ie carbone, en presence du carbonate de sodium, a ete conduit a 1000-1200°C pour des periodes allantjusqu'a 180min. Des additions de carbonate de sodium allant jusqu'a 30% en poids du minerai ont ameliore l'efficacite de la reduction. La metallisation maximum obtenue a 1200°C etait d'environ 85% alors que Ie reste du fer avait la forme de sodium-fer-titanates. Le type de compose de sodium forme dans Ie produit final depend de la temperature de grillage. Les donnees du taux de reduction en conditions isothermales ont ete representees par un modele de reaction de phaselimite pour des conversions jusqu'a 70% en poids. L'activation d'energie apparente obtenue est d'environ 67 kJ Imol. La separation magnetique des produits grilles a donne des fractions magnetiques differentes ayant differents rapports de Fe/Ti02 (entre 2-3) ainsi qu'une fraction non-magnetique qui Hait faible en fer et propice a la production du bioxide de titane.

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