本发明公开了一种提高烧结褐铁矿比例的方法，将包含颗粒A和/或颗粒B的烧结混合料进行布料后烧结，其特征在于，按布料高度方向从上到下将料层连续分成N层，并控制料层各层烧结混合料中颗粒A所占总颗粒A的重量百分比，以及颗粒A和颗粒B的比例；颗粒A为酸性褐铁矿；颗粒B为碱性基体料，颗粒A的粒度大于颗粒B的平均粒度；所述的N为3～10的整数。采用本发明可将粗粒褐铁矿比 例由28～40％提升至47％～55％(不含返矿)，增加10～20％，降低抽风负压1～2kPa，烧结矿产量提高5～10％。

The invention discloses a method for increasing the proportion of sintered limonite, which is characterized in that the material layer is continuously divided into N layers from top to bottom according to the distribution height direction, and the weight percentage of particle A in the total particle A and the proportion of particle A and particle B in the sintering mixture of each layer of the material layer are controlled; Particle A is acid limonite; Particle B is an alkaline matrix material, and the particle size of particle A is greater than the average particle size of particle B; The n is an integer of 3 to 10. The invention can increase the proportion of coarse-grained limonite from 28 ~ 40% to 47% ~ 55% (excluding return ore), increase by 10 ~ 20%, reduce the suction negative pressure by 1 ~ 2KPa, and increase the sinter output by 5 ~ 10%.