关键词: 赤铁矿, 浮选药剂, 浮选技术

Abstract: Flotation is the main method to deal with fine hematite，especially the reverse flotation process is widely used in industrial production. The research progress of flotation reagents and enhanced flotation technology for fine hematite in recent years was systematically reviewed.In terms of flotation re⁃ agents，the performance characteristics and mechanism of collectors (cationic / anionic reverse flotation col⁃ lectors，new compound，combination and microbial collectors)，inhibitors (starches，celluloses and their modified products and activators are described in detail. In the aspect of strengthening flotation technolo⁃ gy，the technical advantages and mechanism of nanobubble flotation in improving flotation rate and selec⁃ tivity，ultrasonic flotation in improving mineral surface properties and reagent efficiency，carrier flotation and flocculation flotation in strengthening micro-fine particle recovery were analyzed. This paper points out the shortcomings of the current research in the aspects of reagent cost，environmental friendliness and in⁃ dustrial application of technology，and looks forward to the future development direction of fine hematite flotation technology，which provides reference for the efficient and green development and utilization of he⁃ matite resources in China.

Key words: hematite, flotation reagents, flotation technology