高炉控料控硅操作模型研发及应用  

Development and application of material and silicon control operation model in blast furnace

作　　者：林安川 邱贵宝[1] 刘晓兰 蒋玉波 刘缘缘 徐建宇 LIN Anchuan;QIU Guibao;LIU Xiaolan;JIANG Yubo;LIU Yuanyuan;XU Jianyu(College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;Kunming Vocational and Technical College of Industry,Kunming 650302,China;Steelmaking Plant,WISCO Kunming Iron and Steel Co.,Ltd.,Kunming 650302,China)

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]昆明工业职业技术学院,云南昆明650302 [3]武钢集团昆明钢铁股份有限公司炼铁厂,云南昆明650302

出　　处：《冶金自动化》2023年第5期79-92,共14页Metallurgical Industry Automation

基　　金：云南省科技人才与平台计划(202105AF150020);“春城计划”首席技师专项资助(C202010001)。

摘　　要：高炉生产过程涉及气、固、液多相复杂反应并受到原燃料条件、操作冶炼参数、高炉状态等相互关联的多种因素相互作用影响,难以对冶炼过程的稳定性及技术指标具有重要影响的两个操控目标料速、生铁硅含量进行精准控制。为了将影响其控制的众多因素之间的复杂关系进行全面量化并形成操作调剂的标准化、流程化,解决高炉三班倒生产普遍存在的由于操作者个体差异导致的判断及调剂标准不统一、操控精度不高等问题,基于炼铁理论,结合实践经验,辅以计算机信息化手段,创新性地设计研发了能够定量化、模块化精确控制冶炼过程中料速、生铁硅含量及渣铁成分并具有数据采集、量化评价及校核、优化等功能的控硅控料操作模型。操作模型的应用有效提升了高炉操作中“氧调控料、煤调控温”调剂方法的统一性和系统性,满足日常高炉生产对操作的即时性、流程化、方便性要求。应用于具体容积、原燃料条件高炉的实践表明,冶炼行程中每班经过0~3次调氧、0~3次调煤即可达到计划料速及铁水硅含量的操控目标值;日预控硅含量与实际硅含量偏差率仅0.006%,按料速计算,日理论产量与实际产量偏差率仅为0.133%。模型为改善炉况顺行程度、降低燃料比和冶炼成本奠定了基础。The production process of BF involves complex gas,solid and liquid multiphase reactions and is affected by the interaction of multiple factors such as raw fuel conditions,operating smelting parameters and BF's state It is difficult to accurately control two control targets,namely rate of decline of blast furnace charge and pig iron's silicon content,which have important influence on the stability and technical indexes of smelting process.In order to comprehensively quantify the complex relationship between many factors that affect its control and form the standardization and process of operation regulation,and to solve the common problems of disunity of judgment and regulation standards and low control accuracy caused by individual differences of blast furnace three shift production.Based on ironmaking theory,combined with practical experience and aided by computer information means.An operation model was innovatively designed to control the silicon and rate of decline of BF's charge,which can quantify and modular accurately control the rate,silicon content of pig iron and slag iron composition in the smelting process,and has the functions of data collection,quantitative evaluation,check and optimization.The operational model effectively improves the uniformity and systematization of"oxygen control rate,coal control temperature"regulation method in blast furnace operation,and meets the requirements of immediacy,procession and convenience in daily BF's production.The practice of BF applied to specific volume and raw fuel condition shows that the target value of rate of decline of BF's charge and silicon content of molten iron can be achieved in O-3 times of oxygen adjustment and O-3 times of coal adjustment in each shift in the smelting process.The deviation rate between the daily pre-controlled silicon content and the actual silicon content is only 0.006%points.Calculated based on material speed,the daily deviation rate between theoretical and actual production is only 0.133%.The model lays a foundation for impro

关 键 词：高炉 料速 氧调 煤调 控硅 模块化 控制及校核 

分 类 号：TF54[冶金工程—钢铁冶金]