The GATE Grind

GATE 2022 MT – Question 13

Mineral Processing and Extractive Metallurgy · Non-ferrous extraction · 1 mark · Multiple choice

Titanium is produced commercially by

  1. smelting reduction of $\mathrm{TiO}_2$
  2. thermal dissociation of $\mathrm{TiH}_2$
  3. reduction of $\mathrm{TiCl}_4$ by Mg
  4. reduction of $\mathrm{TiO}_2$ by $\mathrm H_2$

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Correct answer: (C) reduction of $\mathrm{TiCl}_4$ by Mg

Explanation

The Kroll process reduces titanium tetrachloride using magnesium: TiCl4+2Mg→Ti+2MgCl2. Direct oxide smelting risks strongly bound oxygen and carbide contamination.

Therefore **C**.