To achieve economical and efficient recovery of iron from the vanadium-titanium magnetite ore resources in a typical mining area of Panxi, a systematical process mineralogy analysis was conducted for representative and comprehensive ore samples from this area. On this basis, experimental studies were carried out, including pretreatment of coarse ore for tailings discarding, staged grinding and low-intensity magnetic separation (LIMS) processes. The results show that iron in the ore mainly occurs in titanomagnetite, which has a complex dissemination with ilmenite and gangue minerals. Moreover, exsolution textures such as fine-grained ilmenite lamellae are widely developed in titanomagnetite, which is the key factor restricting the improvement of iron concentrate grade. The comprehensive ore sample was processed by adopting a process of wet pre-discarding, three-stage staged grinding and three-stage LIMS, and an iron concentrate grading 57.98% TFe was obtained with a TFe recovery of 61.99%.

vanadium-titanium magnetite  /  staged grinding and staged separation  /  low-intensity magnetic separation  /  iron concentrate  /  ilmenite  /  titanomagnetite