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在容量为100kgEOF实验炉(能量最优化炉)中,实验研究了铁水熔池上部煤气温度及成分的变化,以及熔融铁水的温度变化,并由铁水熔池传热机制出发建立了传热效率的计算方法。实验证实,铁水熔池采用薄渣层冶炼工艺时,将二次燃烧产生的热量传向铁液,渣滴起着重要的作用。适量空气的进入,可以取得较高的二次燃烧率,并且可以抑制过高的炉顶煤气温度,取得较高的传热效率,同时延长炉衬寿命;通过顶枪、侧枪吹氧,可以提高搅拌能,提高传热效率。
In a 100kg EOF experimental furnace (energy optimization furnace), the temperature and composition of the upper gas in the molten iron bath and the temperature change of the molten iron were experimentally studied, and the heat transfer efficiency was established based on the heat transfer mechanism of the molten iron bath Calculation method. Experiments confirmed that molten iron bath with thin slag layer smelting process, the heat generated by secondary combustion pass to the molten iron, slag droplets play an important role. With the proper amount of air entering, a higher secondary combustion rate can be achieved, and the temperature of the top coal gas can be suppressed to obtain a higher heat transfer efficiency and prolong the lining life. By using a top gun and a side gun, oxygen can be increased Mixing energy, improve heat transfer efficiency.