以铁尾矿为原料,活性炭为还原剂,在氮气保护下研究通过磁化焙烧—磁选分离方法回收铁的可能性,并用磁选精矿产率、回收率以及精矿、尾渣品位等指标,探究焙烧温度、配炭比、焙烧时间等因素对分离结果的影响。研究结果表明:最佳实验条件为焙烧温度800℃、氮气流速0.5 L/min、配炭比0.8 g炭/100 g铁尾矿、焙烧时间10 min、磨矿时间2 min(289 Hz棒磨)、激磁电流2 A。在此条件下,铁精矿产率约为23%,回收率大于80%,精矿品位为58%,尾矿品位为4%。 Taking iron tailing as raw material and activated carbon as reductant, the possibility of recovering iron by magnetization roasting and magnetic separation separation was researched under the protection of nitrogen gas. The yield and recovery of magnetic separation concentrates, Explore the roasting temperature, with charcoal ratio, roasting time and other factors on the separation results. The results show that the best experimental conditions are the calcination temperature is 800 ℃, nitrogen flow rate is 0.5 L / min, carbon ratio is 0.8 g charcoal / 100 g iron tailings, roasting time is 10 min, grinding time is 2 min (289 Hz rod mill) , Excitation current 2A. Under this condition, the iron concentrate yield is about 23%, the recovery rate is over 80%, the concentrate grade is 58% and the tailings grade is 4%.