Abstract: In order to test the superiority of new developed magnetic spiral chute in fine ilmenite recovery，the beneficiation experiments on ilmenite ores with particle sizes of 0.074~0.038 mm and -0.038 mm were conducted by adopting BLL-600 magnetic spiral chute and the conventional spiral chute.The results showed that: ①for ilmenite with particle sizes of 0.074~0.038 mm，14% of feeding concentration，and 5.4 L/min of feeding capacity，rough titanium concentrate with TiO₂ grade of 27.03% and recovery of 72.20% was obtained by one roughing using conventional spiral chute，while rough titanium concentrate with TiO₂ grade of 27.19% and recovery of 86.04% was achieved by one roughing using magnetic spiral chute.②For ilmenite in -0.038 mm，10% of feeding concentration，and 4.2 L/min of feeding capacity，rough titanium concentrate with TiO₂ grade of 8.48% and recovery of 42.83% was obtained by one roughing using conventional spiral chute，however rough titanium concentrate with TiO₂ grade of 8.43% and recovery of 57.88% was achieved by one roughing in magnetic spiral chute.③titanium concentrate recovery by magnetic spiral chute was significantly higher than that by conventional spiral chute under the same operating conditions.④the magnetic spiral chute significantly increased the capacity with the same titanium concentrate index.

Key words: Fine ilmenite, Magnetic spiral chute, Conventional spiral chute, Recovery of TiO2, Processing capacity