关键词: 锂辉石, 磁铁矿, 浮选, 弱磁选

Abstract: There is 1.21% Li₂O in a spodumene ore of Guizhou. The primary gangue minerals were quartz， feldspar， apatite， magnetite， kaolinite， etc. In order to find recovery process of spodumene， beneficiation test was conducted on the ore. The flotation process was investigated in order to concentrate spodumene， followed by magnetic separation process to remove magnetite in spodumene concentrate. The results indicated that， at the grinding fineness of 83.2% -0.074 mm， with sodium oleate and salicylic acid as mixed collector （the mass proportion was 1∶1） the total dosage was 1 200 g/t， and ferric chloride as activator， the dosage was 100 g/t， via one roughing-one scavenging-three cleaning closed circuit process to enrich spodumene， and removal of Fe by one stage low-intensity magnetic separation（the magnetic field intensity was 198.94 kA/m）. Concentrates acquired contain 6.16% Li₂O and 0.45% Fe， and the recovery of Li₂O was 85.43%.

Key words: Spodumene, Magnetite, Flotation, Low-Magnetic separation