关键词: 萤石, 高梯度强磁选, 浮选, 细磨

Abstract: The wolframite floating tailings in Hubei has particle size of -0.074 mm 86.39% with the content of fluorite 22.35%.Fluorite is hard to be separated from the main gangue minerals such as fluorites and garnets，quartz.In order to improve the recovery of fluorite，and according to the nature of the sample，the high gradient magnetic separation-flotation process is used for fluorite separation.The results show that when the background magnetic induction intensity is 1.2 T，magnetic impurity can be thrown，with fluorite content of 7.10% and the yield rate 13.06%，and Non-magnetic products with the content of fluorite was 24.64%；Non-magnetic product is conducted by adopting the flotation flowsheet of one roughing，two scavenging and seven cleaning（cleaning would conducted when the rough concentrate ground to 77.64% passing 0.038 mm）.Finally，the fluorite concentrate with fluorite grade of 96.48% and recovery of 69.54% was obtained.Therefore，the high gradient magnetic separation-flotation process is a sample of efficient recycling process of fluorite.

Key words: Fluorite, High gradient high intensity magnetic separation, Flotation, Ultrafine milling