Abstract
Behaviors of TiO 2 in the alumina carbothermic reduction and chlorination process in vacuum at different temperatures were investigated experimentally by means of XRD, SEM and EDS. In the preparation of materials, the molar ratio of Al 2O 3 to C was 1:4, and 10% TiO 2 and excess AlCl 3 were added. The results show that TiC is produced by C and TiO 2 after TiO 2 transforms from anatase into rutile gradually. In the temperature range of 1 763-1 783 K, the compounds of Ti and Al are not found in slags and condensate. The purity of aluminum reaches 98.35%, and TiO 2 does not participate in alumina carbothermic reduction process and chlorination process in vacuum.
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