四塩化チタンの精製に関する研究

抄録

We made an experimentation about the separation of FeCl₃ from TiCl₄ with a cottrell precipitator during the direct chlorination of ilmenite.
The most part of FeC13 was caught with a cottrell precipitator and Fe included in the condensed TiCl₄ was about 0.002%, compand with Fe in TiCl₄ being 0.06% with out a cottrell by our experimental apparatus.
Also, we studied the solubility of FeCl₃ in TiCl₄. At 110°C the solubility of FeCl₃ is 0.043% and at 40°C it is 0.003%, (weight percent) Vanadium could not be separated with a cottrell because a difference of the boiling points of VOCl₃ and TiCl₄ is small.
With the method of a selective oxidation of VOCl₃ in TiCl₄ by oxygen, V could be removed to a certain extent, but the result was unsatisfactory as compared with the results of the methods that remove V by Cu powder or H₂S.