莱钢高炉用含铁炉料熔滴性能试验及分析

摘要

Melting-dropping property tests of single ore and different collocation in common ferruginous burden were made. The results showed that high basicity sinter has good deformation resistance, excellent melting-dropping properties (MDP); in acid burden, the MDP of D lump ore are superior to that of J pellet;in the structure with three kinds of ore, with adding proportion of D lump ore increase, the MDP improvement is more conducive to the smooth operation of blast furnace. At present, the appropriate burden design for Laiwu Steel’BF is“70%A sinter+(0-10%) J pellet+(20%-30%) D lump ore”. The using proportion of the D lump ore in the range of 30%should be increased.%　　对莱钢常用的含铁炉料单矿及混合搭配进行了熔滴性能试验，通过试验分析：高碱度烧结矿具有良好的抗变形能力，优良的熔滴性能；酸性料中D块矿熔滴性能优于J球团；三元搭配结构中，随着D块矿配加比例增加，熔滴性能改善，更有利于高炉顺行。莱钢目前较适宜的炉料结构为“70%A烧结矿＋（0~10%）J球团＋（20%～30%）D块矿”，应在30%范围内增加D块矿使用比例。