• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Causes of Particle Trajectory Fluctuation on the Rotating Chute in Circumferential Direction at Bell-less Top with Parallel Type Hoppers
【24h】

Causes of Particle Trajectory Fluctuation on the Rotating Chute in Circumferential Direction at Bell-less Top with Parallel Type Hoppers

机译：平行式料斗的无钟顶部旋转溜槽周向方向上颗粒轨迹波动的原因

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

Uneven burden distribution at bell-less top has a negative influence on the smooth operation of blast furnace with parallel type hoppers. Although previous works agreed that the initially oval-shaped particle trajectory on the chute causes the above-mentioned segregation, the subsequent particle trajectory fluctuation against the circumferential direction was still not fully understood. As a result, this work employs both the discrete element method (DEM) simulation and the theoretical model calculation, to quantitatively elucidate the causes of particle fluctuating behaviors on the rotating chute. The consistent results show that, on the one hand, a sine-like particle velocity distribution causes the Coriolis force to have a maximum magnitude around 120 deg while a minimum around 300 deg in the circumferential direction. On the other hand, the alternately sparse and intensive granular flow on the chute causes the particle mass flow rate to present a sine-like result with a maximum rate around 220 deg while a minimum around 60 deg. The superposition of two results contributes to the particle trajectory fluctuation on the rotating chute in the circumferential direction at bell-less top with parallel type hoppers.
机译：无钟罩顶部的不均匀负荷分布对带有并联式料斗的高炉的平稳运行具有负面影响。尽管先前的工作认为在溜槽上最初的椭圆形颗粒轨迹引起了上述分离，但是随后的颗粒轨迹相对于圆周方向的波动仍然没有被完全理解。结果，这项工作同时使用了离散元方法（DEM）模拟和理论模型计算，以定量地阐明了旋转溜槽上颗粒波动行为的原因。一致的结果表明，一方面，类似正弦的粒子速度分布会导致科里奥利力在圆周方向上的最大值约为120度，而最小值在圆周方向上约为300度。另一方面，斜槽上交替的稀疏和密集的颗粒流导致颗粒质量流率呈现正弦样结果，最大流率约为220度，而最小流率约为60度。这两个结果的叠加有助于在带有平行式料斗的无钟形顶部的旋转溜槽上沿圆周方向的颗粒轨迹波动。

著录项

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