Abstract: The metal minerals in the ore are mainly magnetite,hematite,maghemite,titanomagnetite,ilmenite,etc.Magnetite is the main iron ore,and hematite and maghemite are the secondary minerals of magnetite,which are generally distributed in magnetite.There are many types of titaniumiron ore,and titanomagnetite is the main type,followed by ilmenite.Magnetite and titanomagnetite are coarsegrained disseminated characteristics.Ilmenite is finegrained dissemination.Magnetite is closely disseminated into ilmenite and their mineral particles are combined together.This structure construction leads to the difficulty in the complete dissociation of these two minerals,especially ilmenite distributed in magnetite in sheet and lattice types,which affects the iron grade and the titanium recovery.

Key words: Titaniumiron ore, Mineral composition, Disseminated grain size, Structure construction, Disseminated characteristic