| 摘要 |
<p>1. Method of making titanium tetrachloride from coarse, pre-purified titanium scrap consisting of titanium or titanium alloy, containing iron, characterized thereby that pieces of scrap are halogenized in a reactor (28) at about 600 degrees C, by a chlorine partial pressure which is fixed by a superposed gas balance, the partial pressure relation of the superposed gas balance, preferably the partial pressure relation (A) of hydrochloric acid (HCI) and hydrogen (H2 ), beng adjusted to a value at which the iron is chlorinated to iron (II)-chloride and the alloy metals to nonvolatile metal chlorids and a gas mixture composed of titanium tetrachloride (TiCl4 ) hydrochloric acid (HCI) and hydrogen (H2 ) is generated which is cooled down to a temperature below 130 degrees C, in a cooler (40, 42) where the titanium tetrachloride changes into the liquid phase and is separated and excess hydrogen and hydrochloric acid are again supplied into the process while the iron (II)-chloride remains in the solid state in the reactor.</p> |
