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基于炼钢过程底吹气体热力学及动力学进行分析,研究了底吹氧气、二氧化碳、氩气、氮气的冶炼效果。研究结果发现,氩气或氮气不与熔池元素反应,底吹时熔池温度基本不变,钢中氮质量分数较高;底吹氧气或二氧化碳时,脱碳速率和钢中氮、氢质量分数基本相同,熔池温度升高了162和45℃。同时发现,与底吹氧气相比,二氧化碳可减少炼钢烟尘量,炉渣中w((TFe))降低2.50%,w((O))降低90.2%。
Based on the analysis of thermodynamics and kinetics of blowing gas at the bottom of the steel making process, the smelting effect of bottom blowing oxygen, carbon dioxide, argon and nitrogen was studied. The results show that the argon or nitrogen does not react with the molten pool element, the temperature of the molten pool remains unchanged at the bottom blowing, and the nitrogen content in the steel is relatively high. At the bottom of blowing oxygen or carbon dioxide, the decarburization rate and nitrogen, The scores are basically the same, with the bath temperature raised by 162 and 45 ° C. At the same time, compared with the bottom blowing oxygen, carbon dioxide can reduce the amount of smelting dust, w ((TFe)) decreased 2.50%, w ((O)) decreased 90.2%.