北营新1号高炉高风温生产实践

北营新1号高炉通过优化高炉煤气处理流程,配置旋切顶燃式热风炉,采用前置预热炉、热管换热器分别预热助燃空气和煤气,使用带横梁的炉箅子技术、管道保温技术以及优化烧炉技术等,为送风温度达到1250℃创造了条件。高炉在精料基础上,通过控制合理炉腹煤气量指数和理论燃烧温度,优化煤气流分布,规范高炉操作等措施,2013年全年平均风温1248℃,达到国内同型高炉领先水平。     

气体爆炸实验器的制作和使用

图1是气体爆炸实验器制作流程图。1)从废旧的打火机上拆下一个电子打火器，备用。2)取20mL的一次性注射器一个，切去针筒的前端(图1a)，并用砂纸将切割处打平整；抽出注射器的推杆(图1b)，把电子打火器用胶布(或细线)固定到注射器推杆的下方，用2根长短合适的漆包线将电子打火器的点火极线引出，并穿过注射器活塞，然后把2根漆包线拧在一起(拧3—4圈)，再调整点火极点之间的距离，使其打火正常(图1c)。     

高炉热风炉燃烧控制系统

高炉热风炉燃烧控制系统通过改造，对实现高炉燃烧过程的稳定性、经济性、合理性，起到了一定的效果。文中重点叙述了在线系统的硬件配置及软件编制思想，同时指出了系统仍然存在不足与今后改进的方向。     

某高炉转运站动力测试及检测分析

应用振动测试方法,对某高炉转运站进行结构动力测试,在现场测试数据基础上,结合理论计算,对转运站使用过程中的振动作了一些分析,并就振动对结构和生产人员造成的危害进行了评定。     

水稻稻瘟病与气候条件分析

针对稻瘟病对水稻的严重危害,通过查找宜春市植保部门稻瘟病重发年与气象部门1971～2000年(共计30年)的1～2月平均气温资料对比分析,认为暖冬及水稻生长关键期的雨日雨量是诱发稻瘟病呈现两个发病高峰的重要因素,并由此提出具有针对性的防治对策及建议.     

高炉矿渣微粉的开发与利用

我国冶金企业每年产生大量的高炉矿渣,这些矿渣不仅占用大量的耕地,而且污染环境;通过将高炉矿渣粉磨成比表面积为430m~2/kg及以上的矿渣微粉,其活性在碱性介质中得到充分发挥,可在混凝土中等量取代水泥20％～40％,既减小了环境污染,又大大的增加了经济效益。     

浓缩塔控爆拆除

武钢二炼钢厂浊循环水二次浓缩塔的爆破环境十分恶劣，通过优化爆破设计、精心施工，达到了完全准爆的预想效果。     

谈高炉内的脱硫

本就硫的存在形式，分析了硫在高炉内的三个去向，得出生铁含硫量公式，并通过分析影响生铁含硫高低的因素，炉渣的脱硫反应和影响炉渣脱硫能力的因素，总结出生产中有关脱硫的处理方法。     

Numerical Analysis of Structural Progressive Collapse to Blast Loads

After the progressive collapse of Ronan Point apartment in UK in 1968, intensive research effort had been spent on developing guidelines for design of new or strengthening the existing structures to prevent progressive collapse. However, only very few building design codes provide some rather general guidance, no detailed design requirement is given. Progressive collapse of the Alfred P. Murrah Federal building in Oklahoma City and the World Trade Centre （WTC） sparked again tremendous research interest on progressive collapse of structures. Recently, US Department of Defence （DoD） and US General Service Administration （GSA） issued guidelines for structure progressive collapse analysis. These two guidelines are most commonly used, but their accuracy is not known. This paper presents numerical analysis of progressive collapse of an example frame structure to blast loads. The DoD and GSA procedures are also used to analyse the same example structure. Numerical results are compared and discussed. The accuracy and the applicability of the two design guidelines are evaluated.     

Numerical Analysis of Structural Progressive Collapse to Blast Loads

After the progressive collapse of Ronan Point apartment in UK in 1968, intensive research effort had been spent on developing guidelines for design of new or strengthening the existing structures to prevent progressive collapse. However, only very few building design codes provide some rather general guidance, no detailed design requirement is given. Progressive collapse of the Alfred P. Murrah Federal building in Oklahoma City and the World Trade Centre (WTC) sparked again tremendous research interest on progressive collapse of structures. Recently, US Department of Defence (DoD) and US General Service Administration (GSA) issued guidelines for structure progressive collapse analysis. These two guidelines are most commonly used, but their accuracy is not known. This paper presents numerical analysis of progressive collapse of an example frame structure to blast loads. The DoD and GSA procedures are also used to analyse the same example structure. Numerical results are compared and discussed. The accuracy and the applicability of the two design guidelines are evaluated.     

高炉内部行为二维动画制作

高炉内部因发生高温的物理化学多相反应而不能直接观察,俗称"黑箱",不仅给现场实际操作造成困难,在理论教学时学生不能直观看到炉料的连续变化而难以理解.文章借助Flash技术使得静态图片动起来展现高炉内各区域炉料的变化过程,在便于教师讲授高炉解剖及相关知识的同时,学生也能从宏观和微观两个方面把握高炉内部行为.基于二维动画效果,该制作对"炼铁学"课程教与学及相关实训是有意义的.     

Numerical Calculation of Concrete Slab Response to Blast Loading

In the present paper, a dynamic plastic damage model for concrete has been employed to estimate responses of a reinforced concrete slab subjected to blast loading. The interaction between the blast wave and the concrete slab is considered in 3D simulation. In the first stage, the initial detonation and blast wave propagation is modelled in 2D simulation before the blast wave reaches the concrete slab, then the results obtained from 2D calculation are remapped to a 3D model. The calculated blast load is compared with that obtained from TM5-1300. Numerical results of the concrete slab response are compared with the explosive test carried out-in the Weapons System Division, Defence Science and Technology Organisation, Department of Defence, Australia.     

用Excel完成高炉鼓风机选型的计算

本文简述了实际工作中编写的高炉鼓风机选型计算程序及其完成的功能和使用方法。给出具体应用示例并总结归纳其特点。     

Numerical Calculation of Concrete Slab Response to Blast Loading

In the present paper, a dynamic plastic damage model for concrete has been employed to estimate responses of a reinforced concrete slab subjected to blast loading. The interaction between the blast wave and the concrete slab is considered in 3D simulation. In the first stage, the initial detonation and blast wave propagation is modelled in 2D simulation before the blast wave reaches the concrete slab, then the results obtained from 2D calculation are remapped to a 3D model. The calculated blast load is compared with that obtained from TM5-1300. Numerical results of the concrete slab response are compared with the explosive test carried out- in the Weapons System Division, Defence Science and Technology Organisation, Department of Defence, Australia.     

气淬高炉渣颗粒凝固行为数值模拟

针对气淬粒化装置中高炉渣颗粒的凝固行为,采用凝固熔化模型、流体体积函数模型和离散坐标辐射模型进行了三维瞬态模拟。考虑炉渣凝固过程中的物性参数变化,主要研究了颗粒的凝固过程、相界面移动速度、颗粒温度分布及周围空气速度分布。结果表明:颗粒凝固过程中固相分布不均匀,迎风面固相厚度大于背风面,这主要由迎风面空气速度比背风面快所致;固相-模糊区界面和模糊区-液相界面移动速度先增加后降低,这是由于在颗粒凝固前期导热系数的影响占主导地位、在凝固后期导热热阻的影响占主导地位;在凝固过程中,颗粒温度由外向内逐渐升高,内部温度降低缓慢。     

高速公路路基工程的爆破设计与施工

对广东某高速公路路基工程的爆破，提出了浅孔爆破与预裂爆破的方案，并就爆破参数、起爆网络、施工中的安全问题等进行了计算和分析。     

Simulation of the Response of Glass Window Under Blast Load

In the investigation of accidental explosion scene, the damage on the glass is one of the typi-cal traces which can be used to decide the characteristic of the explosion source. To analyze the re-sponse of glass under the blast load, a numerical model was developed. In the model, the brittleness glass model was adopted. A‘node release’method, which had some special merits compared with the erosion method was used to simulate the rupture of the glass In the calculation, several problems which play major role in the response of the glass were discussed. The velocity and the displacement of the glass fragment were two major factors. The numerical results are very helpful for the design and hazard assessment.     

Simulation of the Response of Glass Window Under Blast Load

In the investigation of accidental explosion scene,the damage on the glass is one of the typical traces which can be used to decide the characteristic of the explosion source.To analyze the response of glass under the blast load,a numerical model was developed.In the model,the brittleness glass model was adopted.A 'node release' method,which had some special merits compared with the erosion method was used to simulate the rupture of the glass In the calculation,several problems which play major role in the response of the glass were discussed.The velocity and the displacement of the glass fragment were two major factors.The numerical results are very helpful for the design and hazard assessment.     

高炉大钟安装静平衡问题分析

文章采用静平衡分析的方法,给出了高炉大钟的平衡位置和平衡质量的计算方法,可以有效提高大钟的安装速度和质量.     

Effect of Foam Cladding for Blast Mitigation:Numerical Simulation

Two numerical simulations were performed to investigate the protective effect of the foam cladding. One simulation is based on a previous experimental study, which is a ballistic pendulum with and without a foam cladding subjected to close-range blast loading. The other model is a steel beam with and without a foam cladding under blast loading. The overpressure due to the blast event can be calculated by the empirical function ConWep or by an arbitrary Lagrangian-Eulerian (ALE) coupling model. The first approach is relatively simple and widely used. The second approach can model the propagation of the blast wave in the air and the interaction between the air and the solid. It is found that the pendulum with the foam cladding always swings to a larger rotation angel compared to a bare pendulum. However, the steel beam with an appropriate foam cladding has a smaller deflection compared to the bare beam without a foam cladding. It is concluded that the protective effect of the foam cladding depends on the properties of the foam and the protected structure.