1. Technology-EngineeringThe Kroll process is a pyrometallurgical industrial process used to produce metallic titanium from titanium tetrachloride. As of 2001 William Justin Kroll's process replaced the Hunter process for almost all commercial production. == Process == In the Kroll process, titanium tetrachloride is reduced by liquid magnesium to give titanium metal: TiCl 4 + 2 Mg → 825 ∘ C Ti + 2 MgCl... from wikipedia.org