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针对目前高炉原燃料质量恶化导致料柱压差升高的现状,寻求通过布料改善料柱透气性的方法.研究表明:不同粒径颗粒的混合会减小散料层的空隙度,降低透气性;减少颗粒混合,可以提高空隙度.为了改善散料层的透气性,研究了原燃料按颗粒大小分级布料的方式、不同粒级炉料的装料顺序及周期,同时分析了串罐、两并罐及三并罐无钟炉顶的布料特点.研究结果对降低高炉料柱压差及保障高炉稳定顺行有重要作用.
In view of the current situation that the pressure difference of material column increases due to the deterioration of the raw material quality of the blast furnace, the method of improving the air permeability of the material column through the fabric is sought. The results show that the mixing of different particle size particles will reduce the porosity of the material layer and reduce the air permeability In order to improve the air permeability of bulk material, the way of grading raw material fuel by particle size and the loading sequence and period of different particle size charge materials were studied. In addition, Cans and three and no pots bell top of the fabric characteristics.The results of the study to reduce the blast furnace column pressure differential and ensure the smooth blast furnace plays an important role.