共查询到19条相似文献,搜索用时 62 毫秒
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铁水罐KR机械搅拌式脱硫水模试验研究及应用 总被引:2,自引:0,他引:2
针对武钢二炼钢厂的实际生产工艺,对KR脱硫搅拌过程进行水模试验,探讨搅拌速度、搅拌器插入深度对脱硫剂卷入量、卷入深度的影响规律,提出最佳的搅拌速度与搅拌器插入深度控制范围。通过采用最佳搅拌速度和搅拌器插入深度,低硅铁水一次脱硫合格率≥99.50%,超低硫铁水处理后硫痕迹达到95%以上,重脱无痕迹率达87%以上。 相似文献
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南钢对生产管线钢等品种钢,铁水采用KR脱硫处理,通过优化脱硫剂成分、粒度,控制脱硫剂中CaF2%含量、及石灰的活性度和粒度,提高了脱硫效率;调整搅拌转速至脱硫前期90r/min、脱硫中后期80r/min,优化浸入铁水液面下的深度至70cm,实现了目标硫合格率100%。工艺优化有效满足了铁水预脱硫的要求,实现了轻搅拌和深脱硫,同时降低了脱硫温降,保证了转炉工序入炉铁水热量。 相似文献
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KR搅拌技术的水模型实验研究 总被引:1,自引:0,他引:1
铁水炉外脱硫是现代化炼钢优化生产工艺流程不可缺少的环节,目前以KR法为代表的机械搅拌法脱硫和喷吹法脱硫是铁水脱硫的两种主要手段.本文根据宝钢鱼雷罐和铁水包喷粉脱硫的具体生产情况,对钢包单吹金属镁精炼过程中钢液的流动和混合特性作水模型研究.以130 t钢包为原型,设计、加工和建成了几何相似比为1:6的水力学模拟系统.利用相似原理进行KB过程水模型研究,以得到最佳的搅拌参数,指导现场操作.本实验中,采用安装有搅拌桨的浸入旋转喷嘴,设计有多个气体吐出口的浸入旋转喷嘴,以及在旋转搅拌桨的斜下方设置的浸入喷嘴等各种形式的喷嘴,向铁水内吹入镁蒸汽及输送气体的混合气,促进气泡微细化.通过这样的方法,即使使用少量的输送气体,对低的硫、氧浓度的铁水,也可以维持镁的精炼反应的高效率. 相似文献
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《钢铁研究学报(英文版)》2011,(Z2):98-106
This paper seeks to optimize parameters, reduce the cost of desulphurization and the consumption of operation about KR pretreatment of hot metal at the Stainless Steel Company, Baosteel Group. Based on the theoretical analysis of physical chemistry in metallurgy, simulation experiments of the KR desulphurization of hot metal were conducted in a laboratory and the composition of the desulphurization was optimized, by means of chemical analysis, DSC, SEM and EDS. The water modeling displays the fluid flow characteristics of KR desulphurization. Combination of the techniques and production at the Stainless Steel Company, Baosteel Group, the optimized parameters of the process are put forward. 相似文献
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《钢铁研究学报(英文版)》2011,(Z2):107-112
In this work, numerical simulations for the flow characteristics in a tank of KR mechanical stirring or/and gas injection are performed using the Fluent software. The Eulerian multi-fluid model is employed along with the standard k-ε turbulence model to simulate the gas-liquid flow in the stirring tank. A multiple reference frame approach is used to model the impeller rotation. Combined the KR mechanical stirring method and gas injection method, a new gas injection plus mechanical stirring method is proposed. The present results show that the gas phase distributes widely in the eccentric gas injection plus mechanical stirring tank. Therefore, the gas holdup would be increased and the better gas-liquid mixing effect can be obtained in the gas injection plus mechanical stirring case. 相似文献
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KR法铁水脱硫主体设备介绍及有关计算 总被引:2,自引:1,他引:2
结合宝钢集团公司一钢不锈钢现代化改造工程,比较和评价KR脱硫和喷吹法脱硫的特点,介绍KR法铁水脱硫主体设备结构原理,同时提供了搅拌功率的计算方法和实例。 相似文献