Abstract: High occupancy,low grade,and complicated inlaying of the primary ilmenite ore are the characteristics of ilmenite resources in China.Compared with the low recovery of ilmenite ore using magnetic separation,flotation is an advanced method to recover fine ilmenite particle due to its high efficiency in the field of beneficiating fine minerals.This paper systematiclly summarized the research progress of flotation reagents and reviewed the interaction mechanisms between flotation reagents and minerals in recent years in order to promote the advance of ilmenite flotation.The commonly used ilmenite collectors,such as fatty acids,phosphonic acids,arsenic acid,and hydroxamic acid,are introduced in detail.The novel mixed collectors are the important research object for the development and application of flotation collector,which combine the advantages of conventional collectors.Regulators mainly include the activators of ilmenite and the depressants of gangues,which play critical roles when the floatability of ilmenite is similar as that of gangues.The adsorption mechanisms of reagents on the mineral surfaces are explored and analyzed through the modern analytical techniques,which provide a basic theory for the ilmenite flotation and technical references for researchers.

Key words: Ilmenite, Flotation, Flotation reagents, Interaction mechanism