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| THE CHLORINATION KINETICS OF OXIDES OF Fe, Mg, Ti and (Fe, Mg)TiO_3 |
| Yu Baoyu General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing |
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Cite this article:
Yu Baoyu General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing. THE CHLORINATION KINETICS OF OXIDES OF Fe, Mg, Ti and (Fe, Mg)TiO_3. Acta Metall Sin, 1982, 18(2): 164-175.
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Abstract The equilibrium diagram for Fe-Mg-Ti-O_2-Cl_2 system at 1123K was construct- ed on the basis of thermodynamic calculation and then an attempt was made of the selective chlorination to yield synthetic rutile from ilmenite with high Mg content (Fe,Mg)TiO_3.The chlorination kinetics of Fe_2O_3,MgO,TiO_2 and ilmen- ite has been mainly studied using Cl_2-CO and Cl_2-C at 400—950℃.It was resulted that the chlorination process of simple oxide is under chemical reaction control,while that of ilmenite is dependent on the ash layer diffusion.It seems to be difficult to get a high selectivity of FeO,MgO to TiO_2 in the fluidized-bed chlorination of high Mg ilmenite (Fe,Mg)TiO_3 with solid carbon reductant owing to the thermodynamic and kinetic limitations.The“low temperature effect”and catalysis of FeCl_3 found in the chlorination process were also discussed.
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Received: 18 February 1982
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