高炉布料过程气固两相流多尺度料流机理研究及料面三维图像重建

项目名称： 高炉布料过程气固两相流多尺度料流机理研究及料面三维图像重建

项目编号： No.60872147

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 程树森

作者单位： 北京科技大学

项目金额： 30万元

中文摘要： （1） 已完成项目申请书的研究内容，在国内外核心期刊及会议上发表文章24篇，包含2篇SCI，6篇EI，申请通过两项实用新型专利； （2） 结合无钟炉顶设备特点，在前人的工作基础之上，考虑了科氏力和煤气曳力对布料过程炉料颗粒运动的影响，建立颗粒运动三维数学模型，该模型比已有模型更加准确地描述了炉料颗粒的运动过程； （3） 通过观察分析实际布料过程，创新性地提出了布料过程的协同性理论：即布料档位与料流宽度协同，料层厚度与布料圈数协同，料面形状与料层厚度协同，料流颗粒粒度与煤气流速度协同； （4） 发现了目前布料过程中矿石角差和焦炭角差产生的原因，给出了最优中心加焦量，揭示了需要中心加焦和不需要中心加焦对原料的要求，发现了无钟炉顶多环布料存在临界批重现象； （5） 针对目前国内实际的原燃料条件，提出了最优的料面形状及相应的布料矩阵； （6） 在（2）-（5）理论指导下开发了高炉布料测试硬件系统及高炉炉内料面三维重建仿真软件，该硬件和软件系统已成功应用于国内11座大中型高炉，有力的指导了实际生产，取得了良好的社会效益及经济效益。

中文关键词： 高炉;无钟炉顶;料流轨迹;激光网格;料面形状

英文摘要： (1) The research contents in the project application have been completed, and 24 articles have also been published in core journals and conferences at home and broad, in which two articles were indexed by SCI and six by EI. Furthermore, two utility model patents were sucessfully applied . (2) Combined with the characteristics of bell-less top equipment and based on previous work, this article has taken the effects of Coriolis force and gas drag force on the particle movement in the burden distribution process into account, and establishs the three-dimensional mathematical model of partical motion. This model is more accurate than existing models in describing the movement process of charge particles. (3) Through observing and analyzing the actual burden distribution process, the concertedness theory in the burden distribution process is innovatively put forward. It includes tap position and width of burden flow concertedness, layer thickness and ring number concertedness, stock profile and layer thickness concertedness and size of particle and gas flow velocity concertedness. (4) The causes of ore angle difference and coke angle difference in the current burden distribution process are found. And the article gives the optimal quantity of center charging coke, reveals requirements on the raw material with center charging coke and without center charging coke; and exsitence of critical batch heavy of ore and coke for multi-ring burden charging was found. (5) According to the actual conditions of raw fuel at home, the optimal stock profile and corresponding tap position is raised. (6) Under the guidance of theory (2) to (5), the hardware system for measuring BF burden charging process and software for simulating 3-D stock profile were developped. And the hardware and software systems have been sucessfully applied in eleven domestic large and middle sized blast furnace. It strongly guides the actual production, and achieves good social and economic benefits.

英文关键词： blast furnace; bell-less top; burden trajectory; laser mesh; stock profile