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基于高炉-烧结的锌循环富集数学模型,并结合宝钢锌负荷控制经验,定量化讨论了高炉锌循环富集程度,以及高炉锌负荷对燃料比的影响。结果表明:在烧结过程中使用回收高锌粉尘时,由于循环放大的作用,回收高锌粉尘使用比例高时,高炉锌负荷可能增高至3.5倍水平;高炉炉内的锌循环富集浓度至少为入炉时锌浓度的80倍;高炉锌负荷每增加0.10kg/t,燃料比上升1.68kg/t。
Based on blast furnace - sintering zinc cycle enrichment mathematical model, combined with Baosteel ’s zinc load control experience, the enrichment degree of blast furnace zinc cycle and the effect of blast furnace zinc load on fuel ratio were quantitatively discussed. The results show that when the high zinc dust is recovered during the sintering process, the zinc load of the blast furnace may increase to 3.5 times due to the cyclic amplification effect and the high usage rate of the high zinc dust recovery. The zinc enrichment concentration in the blast furnace is at least When the furnace zinc concentration 80 times; blast furnace zinc load for each additional 0.10kg / t, the fuel ratio increased 1.68kg / t.