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通过对于首钢实验高炉的解剖研究,得到以下的认识:在高炉的上部烧结矿的还原度不高,只有下降到炉腹,它才迅速增加,烧结矿的金属化率也具有同样的变化规律.烧结矿的粒度组成发生了变化,+25mm部分明显减少,-5mm粉末增多;但是5～15mm和15～25mm两级变化很小.在高炉上部烧结矿有还原粉化的现象,但不太严重.当它下降到炉胸中部以下,其强度又有上升的趋势.在炉胸部位,烧结矿中硫的成分保持不变,但当它通过软熔带时,其中硫的成分显著增加.在炉腰和炉腹,烧结矿含碱金属达到相当高的水平.此外,通过岩矿相研究和电子探针分析,对于烧结矿的物相组成和它们的变化进行了探讨.
Through the anatomical study of Shougang experimental blast furnace, we get the following knowledge: The reduction degree of sinter in the upper part of the blast furnace is not high, and it only increases rapidly when it descends to the blast furnace. The metallization rate of sinter also has the same variation rule. The size distribution of sinter changed, the part of + 25mm decreased obviously and the amount of -5mm powder increased, but the change of 5 ~ 15mm and 15 ~ 25mm was very small.The sinter in the upper part of the blast furnace had the phenomenon of reducing chalking but not too serious When it falls below the central part of the hearth, its strength tends to increase again. At the hearth, the composition of the sulfur in the sinter remains unchanged, but the composition of the sulfur therein increases significantly as it passes through the reflow zone. The waist and the bosh, and the sinter contains a high level of alkali metal.Furthermore, the phase composition of sinter and their changes are discussed through the study of rock and mineral facies and electron probe analysis.