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由于化学成分和物理性能的原因,净化转炉废气时出现的粉尘过去在炼钢工艺中没有得到再利用或者只有极少量得到了再利用。现由于转炉煤气净化工艺从湿法改变成蒂森-鲁奇的回收煤气的干式电除尘工艺,这一变化启发人们利用工艺粉尘当作转炉炉料。在煤气净化阶段形成粗粉尘,在电除尘器中分选出细粉尘,由于两种粉尘的化学成分和物理性能不同,而进行分离处理和再利用。粗粉尘压块的金属化率高于70％。由于粗粉尘的铁含量高和有害
Due to its chemical composition and physical properties, the dust that was present in purifying the converter off-gas was not previously reused in the steelmaking process or only a very small amount has been reused. As a result of the converter gas purification process from wet to Thyssen-Lurgi recovery of gas dry-type ESP technology, this change inspired the use of process dust as a converter charge. The formation of coarse dust in the gas purification stage, electrostatic precipitator in the separation of fine dust, the two kinds of dust due to the chemical composition and physical properties of different separation and re-use. Metallization of coarse dust briquettes is higher than 70%. Due to the high iron content of coarse dust and harmful