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一、缩小入炉料粒度有利于改善还原条件高炉使用小粒度的原料冶炼,对于改善高炉的生产指标,特别在降低焦比方面有极为显著的效果。采用小粒度原料之所以能降低焦比,其原因主要有三个方面:1.由S=(6∑(y_i)/((?)_id_i))/(∑y_i)可知,混合散料的比表面积与散料直径成反比(上式中:d_i——混合散料中不同粒径炉料的当量直径;(?)_i——散料形状系数;y_i——混合散料中不同粒径炉料所占重量百分比%;)。因而当入
First, reduce the size of the charge into the furnace is conducive to improving the reduction conditions Blast furnace using a small particle size of raw materials for the blast furnace to improve production targets, especially in reducing the coke ratio has a very significant effect. The reason why the use of small-sized raw materials can reduce the coke ration is mainly due to three aspects: 1. It can be seen from S = (6Σ (y_i) / ((?) _id_i)) / (Σy_i) that the specific surface area And bulk material diameter is inversely proportional to (in the above formula: d_i-- mixed particles in different particle size charge equivalent diameter; (?) _i-- bulk shape factor; y_i-- mixed bulk material in different particle size charge % By weight;). So when into