Producing Titanium by Reducing TiCl_2-MgCl_2 Mixed Salt with Magnesium in the Molten State

摘要

In the Kroll process for titanium sponge metal production, TiCl_4 gas is introduced and reacted with molten magnesium metal via a gas-liquid reduction reaction. The magnesium reduction reaction of the mixed salt of TiCl_2-MgCl_2 via a liquid-liquid reaction has been investigated and the results are reported in this article. First, the molten mixed salt was synthesized through chlorination reaction of solid titanium sponge placed in molten MgCl_2 salt, while TiCl_4 gas was bubbled at around 1,173 K. Then, the TiCl_2-MgCl_2 was reacted with molten magnesium at similar temperatures. This proposed magnesium reduction reaction of the TiCl_2-MgCl_2 in the molten state may be more efficient, easier to control, and suitable for realizing continuous titanium production.