磁性螺旋溜槽回收细粒钛铁矿试验

为检验新研制的磁性螺旋溜槽在微细粒钛铁矿回收方面的优越性,以规格型号均为BLL-600的磁性螺旋溜槽和常规螺旋溜槽为分选设备,对0.074~0.038 mm粒级和-0.038 mm粒级的钛铁矿进行了分选效果对比试验。结果表明:①0.074~0.038 mm粒级的物料在给矿浓度均为14%、给矿量均为5.4 L/min的情况下,常规螺旋溜槽1次粗选可获得TiO2品位为27.03%、回收率为72.20%的钛粗精矿,磁性螺旋溜槽1次粗选可获得TiO2品位为27.19%、回收率为86.04%的钛粗精矿;②-0.038 mm粒级的物料在给矿浓度均为10%、给矿量均为4.2 L/min的情况下,常规螺旋溜槽1次粗选可获得TiO2品位为8.48%、回收率为42.83%的钛粗精矿,磁性螺旋溜槽1次粗选可获得TiO2品位为8.43%、回收率为57.88%的钛粗精矿;③在相同工艺技术条件下,磁性螺旋溜槽比同规格型号的常规螺旋溜槽可以取得更高的TiO2回收率;④在精矿TiO2指标相当的情况下,磁性螺旋溜槽可显著提高处理能力。

Experiments on Fine Ilmenite Recovery with Magnetic Spiral Chute

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.