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采用“钢水-炉渣-炉气”为核心的热力学计算原理,通过建立完善的二级网络控制系统,利用计算机软件计算功能建立动态模型,实时监测冶炼全程钢水、炉渣和温度的变化,从而在宣钢120 t转炉实现无副枪和烟气监测装置的自动化炼钢。该技术应用后,转炉脱磷率达到80%以上,终点碳温命中率达到80%,钢铁料消耗降低2.2 kg/t,氧气消耗降低2 m~3/t,白灰消耗降低2.3 kg/t,技经指标显著改善,同时,提高了岗位标准化、规范化操作水平,推广应用前景广阔。
Adopting the principle of thermodynamic calculation with “molten steel-slag-furnace gas” as the core, the dynamic model of the secondary network control system is established and the calculation function of the computer software is used to monitor the changes of molten steel, slag and temperature in real time Automated steel-making without sublance and flue gas monitoring device at Xuanhua 120 t converter. After the application of the technology, the dephosphorization rate of the converter reached more than 80%, the final carbon temperature hit rate reached 80%, the consumption of steel material reduced 2.2 kg / t, the oxygen consumption reduced 2 m ~ 3 / t, the consumption of white ash reduced 2.3 kg / t, Technology index significantly improved at the same time, improve job standardization and standardization of operation, promote the use of broad prospects.