转炉炼钢终点锰磷动态控制技术的开发

转炉炼钢生产的自动化和智能化是提高产量和降低消耗最有效的技术措施之一。应用人工神经网络并选取适当的输入参数，通过转炉生产历史数据进行训练，求得合理优化的网络权重，可对转炉终点Mn、P成分作离线预报。当预报误差目标精度≤20％时，预报命中率超过90％。     

基于PSO优化SVM的转炉炼钢用氧量预测研究

用氧量是影响钢水质量的主要因素之一,为提高转炉炼钢用氧量模型的预测精度,提出基于PSO优化SVM的吹氧量建模预测方法。针对SVM结构参数依据经验选取,致使预测模型的泛化能力差,在标准PSO算法的基础上,优化SVM的惩罚系数、不敏感损失系数和高斯核宽度系数3个结构参数,并建立转炉炼钢用氧量预测模型;在此基础上利用UCI数据库中的Auto-MPG标准数据,验证了方法的有效性;最后以某钢厂100 t转炉的实际生产数据建立吹氧量预测模型,结果表明,与标准BP、RBF及SVM相比,基于PSO优化SVM的转炉炼钢吹氧量预测模型精度高、泛化能力强。     

100t转炉用含钛铁水冶炼高碳钢的留渣+单渣操作实践

针对100t转炉用含钛铁水冶炼高碳钢的前期成渣难于熔化、脱磷率低的问题,分析了含钛铁水转炉炼钢的成渣过程和炉渣的物理特性,开发了留渣+单渣工艺技术。循环利用终点炉渣,充分发挥渣中10%～13%FeO高（FeO）含量的特点,快速把含钛铁水冶炼前期的CaO-TiO₂-SiO₂三元渣系转变为CaO-TiO₂-SiO₂-FeO四元渣系,脱除钢中大部分磷。控制终渣碱度大于3.2、（TiO₂）含量小于5%,使转炉出钢[C]≥0.20%、[P]≤0.014%,转炉炼钢脱磷率达到88%～92%,石灰消耗下降到28 kg/t钢。     

Numerical Model of Scrap Blending in BOF with Simultaneous Consideration of Steel Quality,Production Cost,and Energy Use

At its integrated steel plant in Luleå, SSAB EMEA produces high strength steel via two basic oxygen furnaces (BOFs), type LD/LBE. The BOFs are charged with a mix of hot metal, scrap, and slag formers. The scrap has several functions, for example, as coolant to balance excess heat, and it contributes to high steel production rate and decreased CO₂ emission. The optimal scrap to hot metal ratio is influenced by several factors, for example, the excess heat generated in the BOF versus target value of tapping temperature, content of contamination elements versus contents allowed in the steel, possible use of alloys in scrap to decrease the need of alloy addition and the scrap price versus the production cost of hot metal. The first two factors also affect the maximum amount of scrap to be charged. Furthermore, the available scrap exists as several types with different composition, properties, size, and price. For most scrap types there are also uncertainties in composition, which has to be considered. An optimization model has been further developed in combination with some statistic analysis techniques. The present work is focusing on the possibility to use the model as a tool to optimize and control raw material/scrap blending into the BOFs. On the basis of the statistical analysis technique, the scrap sorting in the model will be described, as well as development and introduction of an extended BOF sub‐model. This model includes a scrap sorting function and a response on deviations in steel quality. Real production data is used to identify steel quality parameters with consideration of different combination of elements, for example, S, Cr, Ni, and Cu. The possible solutions with simultaneous consideration of steel quality, energy consumption and production cost are presented.     

基于事件驱动的过程控制画面实时刷新方法的研究与实现

为了提高过程控制计算机画面显示数据的实时性以及减小系统负荷，结合宝山钢铁股份有限公司二炼钢转炉过程机改造项目，讨论了基于事件驱动的画面实时刷新方法。在分析了该方法的开发和运行环境后，通过刷新组描绘了事件与画面之间的对应关系，通过终端信息表叙述了获取现场终端画面最新信息的方法以及两种互补的键字刷新模式，最后给出了强制显示的实施细节。本方法首先在宝钢二炼钢转炉过程机系统中采用，取得了良好的使用效果，2010年又成功移植到宝钢二炼钢铁水预处理过程机系统中。     

转炉少渣吹炼铬矿直接合金化基础研究

通过平衡实验和模拟实验，探明了复吹转炉利用预处理铁水少渣史炼，铬矿直接合金化时，铬的还原速度与渣成分、温度、搅拌以及矿粒度、加入方式等的关系，并对铬矿的还原反应进行了详细的讨论。     

Glass-ceramics produced from thin-film transistor liquid-crystal display waste glass and blast oxygen furnace slag

This study employed waste glass from thin-film transistor liquid-crystal displays (TFT-LCD) and slag from a basic oxygen furnace (BOF) to produce CaO–MgO–Al₂O₃–SiO₂ (CMAS) glass-ceramics through vitrification and further heat treatment of compacts of the obtained glass powders for densification and crystallization. CMAS glass-ceramics are known for their excellent mechanical and dielectric properties. MgO and Al₂O₃ were selected as modifying agents to ensure that the composition of the wastes featured these important characteristics.     

Characterization and activation of Basic Oxygen Furnace slag

BOF slags are by-products of steel conversion. They are a valuable mineral resource for the construction but have chemical properties that directly control their stability or any hydraulic activity. This paper provides a complete characterization and quantification of BOF slag phases in order to better understand their potential hydraulic activity. The acceleration of the hydration by chemical admixtures is also presented. The BOF slag variability is investigated on several samples with different origins and ages.BOF slag with different origins mainly contain 38-52% C₂S, 20-30% C₂F, 1-7% Ca(OH)₂, 11-13% Fe_1−xO, 2-8% CaO. Calcium silicate is present in β-C₂S form which is the active polymorph present in clinker. BOF slags have poor hydraulic activity at early ages which can be enhanced by calcium chloride addition.