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中国博士后科学基金(20090451277)

作品数:9 被引量:43H指数:4
相关作者:张廷安刘燕赵秋月豆志河王淑婵更多>>
相关机构:东北大学沈阳铝镁设计研究院更多>>
发文基金:中国博士后科学基金国家自然科学基金辽宁省青年人才基金更多>>
相关领域:冶金工程化学工程更多>>

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9 条 记 录,以下是 1-10
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新型喷气机械搅拌法的气泡微细化水模型实验研究
喷气精炼过程中,高速喷入的气流在熔池内部形成大量的大气泡,熔池内部的气泡微细化程度对提高精炼效率具有重要的意义。本文进行了新型机械搅拌法的气泡微细化水模型实验研究,即利用高速摄像,数码摄像及image图像处理技术来研究搅...
刘燕张廷安豆志河吕国志邵品任晓冬赫冀成
关键词:正反转
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新型阴极结构电解槽界面波动振幅的因次分析
2012年
利用相似原理指导下的水模型实验,重点研究了阳极气体对界面波动的影响,探讨了新型阴极结构电解槽水模型的界面波动规律.利用因次分析法得到了与各种物性因素、操作因素、设备因素相关联的波动振幅的准数方程.根据得出的准数方程,理论分析了电解质水平对界面波动振幅的影响,得到该情况下具体的准数方程的表达式.准数方程的解与实验结果一致.
刘燕张廷安章俊冯乃祥
关键词:新型阴极结构水模型
种分槽改进Intermig桨搅拌性能的实验研究被引量:9
2011年
为了研究改进的Intermig桨的搅拌性能,在无挡板的氧化铝种分搅拌槽内,采用PC6D颗粒浓度测量仪对水-玻璃珠液-固体系在不同条件下的颗粒轴向和径向局部浓度进行了测量与分析.结果表明,较高的搅拌转速和体系粘度更有利于固体颗粒的悬浮.粘度μ=3.50×10-3Pa·s、转速n=172r/min时,实验浓度平均值是理论浓度平均值的1.011倍,可见该条件下实验浓度值与理论浓度值更接近,混合更均匀.
王淑婵张廷安张超刘燕赵秋月
关键词:种分槽转速粘度
新型喷气机械搅拌法的气泡微细化水模型实验研究
喷气精炼过程中,高速喷入的气流在熔池内部形成大量的大气泡,熔池内部的气泡微细化程度对提高精炼效率具有重要的意义。本文进行了新型机械搅拌法的气泡微细化水模型实验研究,即利用高速摄像,数码摄像及image图像处理技术来研究搅...
刘燕张廷安豆志河吕国志邵品任晓冬赫冀成
关键词:正反转
文献传递
底吹冰铜吹炼炉中气-液流动状况的数学模拟被引量:12
2012年
采用Eulerian-Eulerian模型描述了底吹冰铜吹炼炉内气液两相流行为,在模拟结果与实测结果一致的基础上,对双喷嘴在不同喷气角度下熔池内的气液两相流行为及气体含量进行模拟计算与比较.结果表明:随着喷吹角度的增大,喷溅情况相应有所减弱,在14°对喷角度下的喷溅现象最为严重.随着双喷嘴对喷角度的增大,射流轴线横向穿透距离增大,湍动能的分布区域也相应增大,气泡在容器中停留时间增加.但当夹角超过一定范围后,继续增大角度会使喷嘴口距离液面垂直距离减小,气泡在熔池中的停留时间反而减小,其中28°对喷角度下,熔池中的气体体积分数最大,而且湍动能分布范围最广.
邵品张廷安刘燕王东兴
关键词:底吹两相流
Study of MgO-Based Desulfurizer in Hot Metal Desulfurization
2011年
This paper has investigated a new desulfurizer for iron and steel industry to make up the lackness of magnesium-based desulfurizer. In order to explore the desulfurization process of hot metal by the new desulfurizer, both the thermodynamics and experiments have been studied.. The results of thermodynamics indicated that, under the standard condition,the lowest reaction temperatures of MgO + C and MgO +Si were 1846℃ and 2132℃ and the pressure of Mg vapor at the hot metal temperature were 0.2-0.5kPa and 0.005-0.01kPa, respectively. In the case of reaction between MgO and Al, the calculated starting reaction temperature under standard condition was 1475 ℃, and the pressure of Mg vapor was distributed from 27 kPa to 45kPa at the hot metal temperature, showing that it was easy to happen the reaction of MgO+Al. The experimental results displayed that the desulfurization efficiency was only 42.31% by the desulfurizer of MgO and C, while the effect of MgO+ Al and MgO+ Al-Si was good, since the desulfurization efficiencies were above 85%, and the lowest sulfur content was below 40×10-6.
ZHANG Ting-an, REN Xiao-dong, LIU Yan, DOU Zhi-he, LV Guo-zhi, HE Ji-cheng (School of Material and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China)
关键词:DESULFURIZATIONTHERMODYNAMICSMGOALAL-SI
Experimental Research of External Desulfurization in Situ Mechanical Stirring被引量:2
2011年
This paper presents a new idea about desulfurization with in-situ mechanical stirring method on the basis of desulfurization by single blow grain magnesium and KR method, that is, the inner gases carry the magnesium vapor formed in-site in molten iron by magnesium-based desulfurization, and bubble dispersed and disintegrated under the condition of mechanical stirring, thence to improve the efficiency of desulfurization by single blow grain magnesium .It has been proved by research of cold water model experiment that the bubble dispersion and disintegration can not only improve the desulphurization efficiency but also increase the utilization rate of magnesium. Obviously, the bubble dispersion and disintegration of magnesium vapor is the key problem in improving the desulphurization efficiency and increasing the utilization rate of magnesium. Thus the research focus on exploring the performance of bubble dispersion and disintegration on the base of refining process and gas-liquid mass transfer. According to the literature and cold water model experimental result basing on principle of similitude, the influencing factors and interaction of bubble dispersion and disintegration have been studied from the perspectives of physical and numerical simulation. The study would provide the theoretical and experimental data for the new method of desulfurization with in-situ mechanical stirring.
MASAMICHI Sano
Study of New Hot Metal Desulfurization Process on 1t Desulfurization Experiments被引量:2
2011年
For the lack of the present hot metal desulfurization processes in iron and steel industry, our group has proposed the in-situ mechanical stirring method for external desulfurization of molten iron and researched this new method. This paper investigated this new in-situ mechanical stirring hot metal desulphurization process on desulphurization experiments of one-ton scale by using the new desulfurizer. The experimental results indicated that the desulfurization efficiency of in-situ mechanical stirring desulfurization process is 90% and the lowest sulfur content in the treated hot metal is 23ppm. By comparing with the methods of direct throwing desulfurizer and in-situ injecting desulfurization, in-situ mechanical stirring desulfurization process is the suitable desulfurizaton method.
REN Xiao-dong, ZHANG Ting-an, DOU Zhi-he, LIU Yan, Lü Guo-zhi, HE Ji-cheng (School of Material and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China)
关键词:DESULFURIZATION
KR法搅拌模式对固液分散性影响研究被引量:10
2010年
铁水炉外脱硫是提高钢铁质量的重要环节之一.目前,广泛采用的铁水炉外脱硫主要方法是喷吹法和KR搅拌法.KR搅拌法因具有脱硫剂单耗低、脱硫效果稳定和良好的搅拌动力学条件而被广泛采用.示踪实验是研究水模型中混合时间的基本方法,以聚氯乙烯颗粒为示踪剂,通过不同的搅拌桨浸入深度对示踪剂分散情况的影响,并考虑液面的稳定,确定最优浸入深度为12~15cm.通过研究不同的搅拌模式对示踪剂分散情况的影响,并考虑单向搅拌时搅拌桨和水的速度达到稳定时所需时间,确定最优搅拌模式为正3s停0.5s.研究结果对氧化钙碳化钙等脱硫剂的KR搅拌脱硫工艺具有一定指导意义.
刘燕张廷安朱盼盼豆志河蒋孝丽赫冀成
关键词:示踪剂
改进Intermig桨种分槽搅拌性能的数值模拟被引量:9
2011年
利用商业CFD软件Fluent12.0和并行计算系统图形工作站,对改进的Intermig桨种分槽内部流场进行了三维数值解析.采用Realizablekε湍流模型和欧拉欧拉多相流模型对槽内不同桨叶离底距离C、桨叶直径D下的氢氧化铝颗粒悬浮规律以及搅拌桨功率消耗进行了模拟.结果显示,搅拌转速一定的条件下,桨叶直径越大,越有利于颗粒悬浮,搅拌功率越大;相对最佳桨径与槽径比为0.6;过高和过低的桨叶离底距离都不利于氢氧化铝颗粒悬浮,桨叶离底距离对功率影响较小,相对最佳离底距离与桨径比为0.55.
赵洪亮张廷安张超刘燕赵秋月王淑婵豆志河
关键词:种分槽机械搅拌数值模拟固液两相流
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