Chemistry - Metallurgy Question with Solution | TestHub

Which method of purification is represented by the following equations
$\underset{\left(\text{impure}\right)}{\text{Ti}}+2{\text{I}}_2\underset{{}^{\text{Δ}}}{\overset{523\text{K}}{\to }}{\text{TiI}}_4\underset{{}^{\text{Δ}}}{\overset{1700\text{K}}{\to }}\underset{\left(\text{pure}\right)}{\text{Ti}}+2{\text{I}}_2$