pH adjustment and deagglomeration separate TiO2, coke, and iron-bearing residue fractions for reuse while cutting waste and energy costs.
Tin converts gaseous AsCl3 into solid arsenic, enabling efficient separation from TiCl4 without yield loss.
A chlorine recycling method converts ferrous chloride to iron sulfate using sulfuric acid for titanium tetrachloride production.
Reduced pressure evaporation prevents tarry lump formation and lowers residue viscosity while recovering ninety to one hundred percent of hydrocarbons.
Tin metal reacts with AsCl3 in crude TiCl4 to form solid arsenic and SnCl4, bypassing energy-intensive distillation.