转炉炼钢熔池碳含量动态变化研究  

Research on dynamic variation of bath carbon content in BOF steelmaking process

作　　者：韩敏[1] 黄晓清[1] 谭明祥 杨溪林[3] 

机构地区：[1]大连理工大学电子与信息工程学院,辽宁大连116023 [2]本溪板材股份有限公司 [3]北京金自天正智能控制股份有限公司

出　　处：《冶金自动化》2009年第5期28-32,37,共6页Metallurgical Industry Automation

基　　金：国家高技术研究发展计划(863)项目(2007AA04Z158);国家自然科学基金项目(60674073)

摘　　要：通过引入炉气分析仪采集的实测数据,用碳指数模型描绘熔池内碳含量实时变化趋势,并用修正后的碳积分模型计算转炉吹炼过程的总脱碳量,以对碳含量的动态变化和终点出钢情况做出预报。在机理分析的基础上,利用三阶段脱碳曲线的后期变化趋势建立碳指数实时和终点预报模型,同时对碳积分计算公式加以修正,得到冶炼全程的脱碳率计算模型。仿真结果表明,碳指数及碳积分模型直接用于指导转炉炼钢生产具有一定的参考价值,在一定程度上可以取代炉气分析仪的使用。Through introduction of measured data collected by exhaust gas analysis instrument,realtime change tendency of carbon content in bath was delineated by using carbon exponential model.Total decarburization amount in converter blowing process was calculated by using modified carbon integral model.Dynamic change of carbon content and tapping condition at endpoint of steelmaking were predicted.Based on mechanism analysis,carbon exponential realtime prediction model and endpoint prediction model were established by use of three steps decarburization curves,carbon integral equation was modified,and decarburization rate calculation model during whole blowing process was obtained.Simulation results indicated that carbon exponential model and carbon integral model have reference value when supervises BOF steelmaking directly.To some extent,they can substitute exhaust gas analysis instrument.

关 键 词：总脱碳量 三阶段脱碳曲线 碳指数模型 碳积分模型 终点预报 

分 类 号：TF713[冶金工程—钢铁冶金]