Titanium smelting authoritative introduction

With iron, aluminum, like titanium in titanium also showed a positive valence. However, both anatase titanium metal smelting difficult than iron and aluminum smelting. This is not only because of the low levels of anatase titanium, but also because the compounds have to be purified before the smelting of titanium, is more difficult than extracting pure alumina from bauxite. Titanium and lively than iron, titanium positive valence restore it, use a stronger reducing agent than carbon monoxide. How to get elemental titanium grade 5 from titanium smelting it?


After selection of titanium ore enrichment, containing titanium dioxide can get 80% of high titanium slag. The high titanium slag with coke, chlorine were hot, titanium dioxide becomes titanium tetrachloride.


TiO2 + 2C + 2Cl2 TiCl4 + 2CO


The melting point of titanium tetrachloride, are very low boiling point, liquid at room temperature, it is easy to purify. Titanium tetrachloride obtained after purification, purity of 99.9%.


The above reaction is a redox reaction, but the plate titanium valence change in the reaction, that is, the titanium was not reduced. Commonly very active metal (such as sodium or magnesium) as a reducing agent, titanium tetrachloride reduction of titanium. Such as the magnesium metal and titanium tetrachloride at 800 ℃ reaction, can be obtained metallic titanium and magnesium chloride.



Titanium obtained by this method showed a cavernous, called titanium sponge. It baked in an electric furnace made of titanium ingots, for further processing use.