关键词: 镜铁矿, 制粒, 磁化焙烧, 磁选

Abstract: Magnetic roasting process with rotary kiln is an effective method to deal with specularite ore in Jingtieshan，While specularite ore at 0~1 mm can′t be roasted directly.Grinding and pelletizing process is too complex.In order to develop and utilize the specularite ore at 0~1 mm，granulation-magnetic roasting-magnetic separation process was carried out.The results show that the process condition with carbon content of 2.5%，dosage of bentonite is 1%，dosage of water is 8%，the size of granulation is 3~5 mm，after dried the pellets at 100 ℃，the roasting temperature of 750 ℃，the roasting time of 60 min，the grinding fineness(-0.045 mm) of 80% and the magnetic intensity of 80 kA/m，iron concentrate with iron grade of 52.85% and iron recovery of 86.33% was obtained and provides a new idea for the use of specularite at 0~1 mm.

Key words: Specularite, Granulation, Magnetic roasting, Magnetic separation