酸化鉄の塩素化反応

抄録

For further understanding on partial chlorination of ilmenite, a thermal gravitation analysis method was applied to chlorination of ferric oxide. A reaction controlling step and activation energy of the iron oxide chloridization were determined from the curves of weight decrease with time under various temperatures and chlorine partial pressures. The reaction mechanisms were also presumed from the relationship between the reaction rates and the partial pressures of chlorine.
In the temperature region higher than 800°C, the reaction is controlled by diffusions of gases of reactant and reaction products, and in the region between 530°C, at which the reaction starts up, and 800°C, by the mixture of the gas diffusion and the chemical reaction.
As the reaction proceeds, the reaction rate is controlled by the chemical reaction.
Experimental equations of the reaction rate are obtained as follows:
Mixed controlling region, _??_
Chemical reaction controlling region, _??_