Vanadium-titanium magnetite is a complex associated mineral primarily composed of iron, vanadium, and titanium, accompanied by various valuable elements (such as chromium, cobalt, nickel, copper, scandium, gallium, and platinum group elements), with high contents of valuable elements. It is an important industrial mineral raw material with high development and comprehensive utilization value. In nature, vanadium-titanium magnetite mainly forms in mafic and ultramafic rock bodies. Common valuable ore minerals in the resulting deposits are mainly titanomagnetite and ilmenite, along with minor amounts of magnetite, hematite, and sulfides. Ilmenite is a magnetite containing solid solution exsolutions such as ilmenite, ulvospinel, and magnesio-aluminate spinel, which can crystallize into ilmenite and magnetite through regional metamorphism. Vanadium-titanium magnetite typically contains 1%–15% TiO₂ and 0.1%–2% V₂O₅. The chemical composition of ilmenite is FeTiO₃, and ilmenite contains 52% TiO₂. 66%, with Fe2+ capable of complete isomorphous substitution with Mg2+ or Mn2+, forming the FeTiO3-MgTiO3 or FeTiO3-MnTiO3 series. When FeO is dominant, it is called ilmenite; when MgO is dominant, it is called geikielite; and when MnO is dominant, it is called pyrophanite. Ilmenite has a Mohs hardness of 5–6, a specific gravity of 4.70–4.78, exhibits weak magnetism, and has a magnetic susceptibility of 1173.33–224.56×10⁻⁹ m³/kg.