...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Factors Controlling High-temperature Zone Resistance to Airflow during Iron Ore Sintering
【24h】

Factors Controlling High-temperature Zone Resistance to Airflow during Iron Ore Sintering

机译：铁矿石烧结过程中控制高温区气流阻力的因素

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A fundamental study was carried out on the high-temperature zone flow resistance during iron ore sintering. In present work, firstly, quartz sand was used to replace iron ores to investigate the impact of temperature if bed structure has no change; then a three-layer bed structure was used to explore the primary factors controlling high-temperature zone structure for airflow. The zone where temperature above 700℃ is defined as high temperature zone. High-temperature zone flow resistance depends on sinter bed temperature and high-temperature zone structure which was related to melt volume, melt properties, bed voidage, drive force and high temperature zone thickness. A new model (k_5=(V_(pre)-V_(post))/(V_(post))*f(β,μ,γ,ξ_0,h)) which can suggest high-temperature zone flow resistance was established by using Support Vector Machine (SVM) model and predicted airflow rate well. Drive force has a very impact on high-temperature zone flow resistance. It can dilute gas channels in the high-temperature zone and increase or maintain sinter bed permeability. Sintering under lower suction has greater high-temperature zone resistance. Too much melt will deteriorate high-temperature zone permeability; sintering airflow rate with high coke rate in the bottom layer decreases by around 25% at a suction of 8 kPa. Similarly melt properties also have a great impact on high-temperature zone resistance; high viscosity is bad for gas channels formation in the high-temperature zone. Under a limited range increasing coke rate has little influence on high-temperature zone resistance.
机译：对铁矿石烧结过程中的高温区流动阻力进行了基础研究。在目前的工作中，首先，如果床层结构没有变化，则用石英砂代替铁矿石来研究温度的影响。然后使用三层床结构探索控制气流高温区结构的主要因素。温度高于700℃的区域定义为高温区域。高温区的流动阻力取决于烧结床温度和高温区结构，该结构与熔体体积，熔体性质，床层空隙度，驱动力和高温区厚度有关。建立了一个新模型（k_5 =（V_（pre）-V_（post））/（V_（post））* f（β，μ，γ，ξ_0，h）），该模型可以通过以下公式建立高温区流动阻力使用支持向量机（SVM）模型并很好地预测了空气流速。驱动力对高温区的流动阻力有很大影响。它可以稀释高温区的气体通道，并提高或保持烧结床的渗透性。较低吸力下的烧结具有更高的高温区电阻。熔体过多会破坏高温区的渗透性；吸力为8 kPa时，底层焦炭率高的烧结气流速率降低了约25％。同样，熔体性质也对耐高温区性有很大的影响。高粘度不利于在高温区中形成气体通道。在有限范围内，增加焦炭率对高温区电阻几乎没有影响。

著录项

  • 来源
    《ISIJ international》 |2015年第12期|2556-2565|共10页
  • 作者

    Hao ZHOU; Mingxi ZHOU; Zihao LIU; Ming CHENG; Kunzan QIU; Kefa CEN;

  • 作者单位

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

    State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zheda road, Hangzhou, 310027 P. R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    high-temperature zone flow resistance; iron ore; sintering;

    机译：高温区流动阻力;铁矿;烧结;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号