微爆性复合球体爆裂反应过程研究  

Study on the burst reaction process of micro-explosive composite sphere

作　　者：彭志翔 常桂华 张艺舰 王晓峰 PENG Zhixiang;CHANG Guihua;ZHANG Yijian;WANG Xiaofeng(Shaanxi University of Science and Technology,Xi'an 710021,China;Anshan Iron and Steel Research Institute,Anshan 114000,China;Yanshan University,Qinhuangdao 066000,China)

机构地区：[1]陕西科技大学,陕西西安710021 [2]鞍钢钢铁研究院,辽宁鞍山114000 [3]燕山大学,河北秦皇岛066000

出　　处：《中国有色冶金》2024年第3期132-139,共8页China Nonferrous Metallurgy

基　　金：国家自然科学基金项目(52174320);西安市重点产业链核心技术攻关项目(2022JH-ZCZC-0056);西安市科技计划项目(23ZDCYJSGG0043-2022)。

摘　　要：针对基于微细异相净化钢液技术生产稳定控制要求,以微爆性复合球体为研究对象进行试验和数值模拟研究,基于HJC模型研究复合球体爆裂反应时动能和等效应变的影响规律,分析起爆位置、复合球体各层尺寸及原料配比等因素对爆裂反应的影响,得到如下结论:制粉过程中CaCO_(3)粉末分布均匀时能够均匀起爆达到最佳效果;爆裂发生时产生的动能大小与质点的飞散距离成正比,相同尺寸和密度的复合球体多点均匀起爆时动能最大,弥散效果最佳,覆盖范围最广;复合球体的外层厚度越小反应效果越佳,中间层厚度为5 mm时反应产物飞散距离最远;复合球体CaCO_(3)与CaO的配比在1∶10时反应产物分布最广泛。Aiming at the stable control requirements of production and application based on micro heterogeneous purification technology of molten steel technology,the micro-explosive composite sphere is taken as the research object to carry out experimental and numerical simulation research.Based on the HJC model,the influence of kinetic energy and equivalent strain on the explosive reaction of composite sphere was studied,and the factors affecting the optimal state of the reaction,analysis of multi-point uniform detonation state of the composite sphere layer size and raw material ratios and other factors on the impact of the bursting reaction,to get the following conclusions:When the distribution of CaCO_(3)powder is uniform in the process of powder preparation,the uniform initiation can achieve the best effect;The size of the kinetic energy generated when the burst is proportional to the dispersion distance of the mass,the same size and density of the composite sphere,multi-point homogeneous detonation of the kinetic energy is the largest,the dispersion effect is the best,the widest range of coverage;The smaller the thickness of the outer layer of the composite spheres,the better the reaction effect,and the middle layer thickness of 5 mm is the furthest away from the reaction products;The ratio of CaCO_(3)to CaO is 1:10,the coverage is the most extensive.

关 键 词：洁净钢 复合球体 夹杂物 数值模拟 爆裂反应 球体结构 

分 类 号：TF03[冶金工程—冶金物理化学] TF114