The application discloses an additive composition for separating
niobium and iron in
niobium iron ore and application thereof, and belongs to the technical field of
metallurgy and
mineral processing. The additive composition comprises, in terms of weight fractions, 45-70 parts of
calcium oxide, 15-40 parts of
silicon oxide and 5-10 parts of
fluoride. In addition, the application also provides application of the additive composition in treatment of
niobium iron ore. The additive composition can realize efficient separation of niobium and iron in low-grade niobium
iron ore under the
joint action of the components.