铁矿粉烧结优化配矿及其模型研究进展  

Research progress on optimization technology and its model of ore-blending for sinter process

作　　者：寇明银 张众[1,2] 曾旺 周恒 吴胜利 KOU Ming-yin;ZHANG Zhong;ZENG Wang;ZHOU Heng;WU Sheng-li(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《钢铁》2022年第2期1-11,共11页Iron and Steel

基　　金：国家自然科学基金委青年基金资助项目(51804027,51904023);钢铁冶金新技术国家重点实验室开放基金资助项目(KF20-06,KF20-07)。

摘　　要：随着铁矿粉资源的不断消耗,各类铁矿粉呈劣化趋势,且大量新矿种出现,使烧结优化配矿需求愈发迫切。主要介绍了铁矿粉常温和高温等基础特性。其中,常温特性主要有化学成分、铁矿粉种类、粒度组成等,同时重点分析了与烧结生产息息相关的高温特征指标,主要有同化性、液相流动性、黏结性强度、铁酸钙生成特性、连晶特性、熔融特性、吸液性和烧结体固结强度,分别介绍了以上指标的定义、意义和测量方法。接着,讲述了烧结优化配矿技术从配矿探索阶段到基于常温特性配矿再到基于高温特性互补配矿的发展历程,然后介绍了铁矿粉优化配矿专家系统模型及其在实际生产中的应用,指出烧结优化配矿专家系统模型可以高效指导烧结优化配矿、降低烧结原料成本,并获得较好的烧结产质量指标。最后,对铁矿粉烧结优化配矿技术进行了总结,指出了其仍然存在的瓶颈和不足,包括铁矿粉烧结高温特性检测标准和指标体系尚未完善、铁矿粉基础特性与烧结矿产质量间缺乏定量关系、烧结配矿专家系统精度不足等问题;同时对烧结优化配矿进行了展望,即铁矿粉烧结高温特性标准和体系的凝练和完善、兼顾铁矿粉高温特性的烧结配矿专家系统的优化和完善、烧结优化配矿的自动化和智能化等方面仍需进一步深入研究。With the continuous consumption of iron ore resources,the qualities of iron ores are deteriorating,and a large number of new iron ore appear,making the demand for ore blending optimization of sinter process more urgent.Therefore,the basic characteristics of iron ores at room temperature and high temperature are mainly introduced in this paper.The room temperature characteristics mainly include chemical composition,type of iron ore and particle size distribution.At the same time,high temperature characteristic indicators that are closely related to sintering production are analyzed in this paper,which mainly including the assimilation,liquid phase fluidity,bonding strength,calcium ferrite generation characteristics,crystal joint characteristics,melting characteristic,liquid absorption and consolidation strength of sintered body.Their definitions,meanings and measurement methods are introduced respectively.The development history of ore blending optimization technology is then introduced from the ore blending exploration stage to ore blending based on room temperature characteristics and then to ore blending based on the complementation of high temperature characteristics.The iron ore blending expert system model and its application in actual production are illustrated.It is indicated that the expert system model of ore blending optimization can efficiently guide the ore blending in sinter process,reduce the cost of sintering raw materials,and obtain better sintering production and quality indexes.Furthermore,the paper summarizes the ore blending optimization technology of iron ore sintering,and points out the bottlenecks and shortcomings that still exist,which are including that the standards and index system of high temperature characteristics of iron ore sintering are not yet perfect,there is a lack of quantitative relationship between the basic characteristics of iron ore and the quality of sintered ore,and the accuracy of sintering ore blending expert system is insufficient.The optimization of sintering ore bl

关 键 词：铁矿粉烧结 基础特性 高温特性互补 优化配矿 配矿模型 

分 类 号：TF046.4[冶金工程—冶金物理化学]