Study on Molten Salt System in Chlorination Furnace for TiCl₄ Production

The chemical compositions,phase structures and microstructures of cold molten salt are studied. It is found that the molten salt system exists in complexus of TiO₂,SiO₂,chloride molten salt,calcium oxides and iron oxides. Molten salt system agglomerates under cold condition with uneven appearance and loose state. The longitudinal and transverse distributions of important components in the molten salt are researched by systematic sampling. The results show that at longitudinal section,the contents of TiO₂,SiO₂ and Al₂O₃ increase gradually from top to bottom,and the contents of C,FeCl₂ and FeCl₃ decrease gradually from top to bottom while most of the components at transverse section do not show a apparent rule.