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为搞清包头矿在高炉内的软熔成渣过程和初渣形成过早的原因,作者对包钢饶结矿和太钢烧结矿等7种炉料在55m~3高炉内的冶炼样品进行了岩矿相观察。包钢烧结矿的成渣过程基本上是部分枪晶石转变为黄长石的过程。在造渣过程中,存在严重的钾、钠、氟的循环富集,严重降低成渣温度。冶炼配加4％氧化镁的包钢烧结矿,钾、钠、氟的影响明显减小,成渣带下移。与包钢烧结矿粘结相矿物组成截然不同,不含氟,钾、钠含量低的太钢烧结矿,其成渣基本为硅酸二钙和钙铁橄榄石向黄长石转变的过程,钾、钠对成渣过程影响不明显,成渣带显著下移。
In order to find out the cause of Baosteel reflow process and primary slag formation in the blast furnace, the authors conducted a series of tests on the smelting samples of 7 kinds of charge in 55m ~ 3 blast furnaces, including Baotou Raojie and Taigang sinter Rock and mine facies observation. Baotou sinter slag into the process is basically part of the conversion of gunite into yellowstone process. In the slagging process, there are serious potassium, sodium, fluorine enrichment cycle, seriously reduce the slagging temperature. Smelting with 4% magnesia Baotou sinter, potassium, sodium, fluorine significantly reduced the impact of slag zone down. And Baotou sinter binder mineral composition is completely different, does not contain fluorine, potassium and sodium content of low Taigang sinter, the basic slag into calcium silicate and calcium iron olivine to the change of process of the yellow feldspar, potassium, Sodium has no significant effect on the slagging process, and the slagging zone significantly decreased.