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通过转炉加入石灰和石灰石熔化成渣机理对比分析可知,加入石灰石块(20~30 mm)造渣,由于形成的初生石灰具有活性度高,与炉渣接触面积大的特点,因此有利于石灰石快速熔化成渣。但石灰石的分解吸热量大,约为石灰、废钢等的4倍。若石灰石加入量过多,会对冶炼温度产生很大影响,同时还影响其他造渣剂的合理加入量。在转炉富余热量有限的情况下,石灰石只能部分取代石灰。
Through the comparative analysis of lime melting and limestone melting into slag by converter, it can be seen that adding limestone block (20-30 mm) to slagging can accelerate the limestone quick melting because of the high activity and large contact area with the slag Into the slag. However, the decomposition of limestone heat absorption, about lime, scrap and other 4 times. If the amount of limestone added too much, will have a significant impact on the smelting temperature, but also affect the reasonable addition of other slagging agent. Limestone can only partially replace lime in the case of limited converter surplus heat.