The reactions in the carbon-elemental sulfur-titaniferous magnetite system were investigated in order to find the possibility of elemental sulfur being an alternative sulfidization agent. The study of this reaction included reaction variables such as partial pressure of sulfur, reaction temperature, weight ratio of added carbon to titaniferous magnetite, reaction time, and particle size of titaniferous magnetite.
The proper conditions for this sulfidization were that partial pressure of sulfur 0.2 atm. reaction temperature 800 ℃, weight ratio of added carbon to titaniferous magnetite 0.7, reaction time 90 min. and particle size of titaniferous magnetite under 150 mesh.
The content of TiO₂ of residue obtained by leaching the sulfidized product with 1 M HCl was 78.48 %.