The overall decarburization mechanism can be divided into the decarburization in bulk molten steel and floating of CO against static pressure, the decarburization on the surface of argon bubbles and splashing particle...The overall decarburization mechanism can be divided into the decarburization in bulk molten steel and floating of CO against static pressure, the decarburization on the surface of argon bubbles and splashing particles. On the basis of each conception the RH-MFB decarburization mathematical model has been built according to the thermodynamic and mass conservation principle, and contributions of every decarburization mechanism were discussed and analyzed.展开更多
介绍了120 t RH炉MFB顶枪在真空室烘烤、去除真空室积渣及吹氧脱碳等方面的应用;考察了真空室预热烘烤煤氧比和流渣煤氧比,得出其最佳值分别为1∶0.75和1∶1.5;讨论了真空脱碳过程中合适的吹氧量,认为[O]质量分数保持在200×10-6以...介绍了120 t RH炉MFB顶枪在真空室烘烤、去除真空室积渣及吹氧脱碳等方面的应用;考察了真空室预热烘烤煤氧比和流渣煤氧比,得出其最佳值分别为1∶0.75和1∶1.5;讨论了真空脱碳过程中合适的吹氧量,认为[O]质量分数保持在200×10-6以上,可以避免对脱碳速度的制约;另外,还讨论了挽救低温钢水事故过程中合适的加铝量及升温效果。展开更多
以300 t RH-MFB工艺参数为基础,建立了整个装置内钢液流动的三维数学模型。用双流体模型处理气液两相流,以分析吹氩流量、真空度、吹氩喷嘴排布等因素对钢液流场和循环流量影响。结果表明,当吹氩流量在4000 L/min以下时,循环流量随吹氩...以300 t RH-MFB工艺参数为基础,建立了整个装置内钢液流动的三维数学模型。用双流体模型处理气液两相流,以分析吹氩流量、真空度、吹氩喷嘴排布等因素对钢液流场和循环流量影响。结果表明,当吹氩流量在4000 L/min以下时,循环流量随吹氩流量提高而提高;该装置以67 Pa,吹氩流量3500 L/min,浸渍管浸入深度600 mm和上下交错排布16个吹氩喷嘴较合理。展开更多
文摘The overall decarburization mechanism can be divided into the decarburization in bulk molten steel and floating of CO against static pressure, the decarburization on the surface of argon bubbles and splashing particles. On the basis of each conception the RH-MFB decarburization mathematical model has been built according to the thermodynamic and mass conservation principle, and contributions of every decarburization mechanism were discussed and analyzed.
文摘介绍了120 t RH炉MFB顶枪在真空室烘烤、去除真空室积渣及吹氧脱碳等方面的应用;考察了真空室预热烘烤煤氧比和流渣煤氧比,得出其最佳值分别为1∶0.75和1∶1.5;讨论了真空脱碳过程中合适的吹氧量,认为[O]质量分数保持在200×10-6以上,可以避免对脱碳速度的制约;另外,还讨论了挽救低温钢水事故过程中合适的加铝量及升温效果。