...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Gas Permeability Evaluation of Granulated Slag Particles Packed Bed during Softening and Melting Stage with Fanning’s Equation
【24h】

Gas Permeability Evaluation of Granulated Slag Particles Packed Bed during Softening and Melting Stage with Fanning’s Equation

机译：扇形矿渣颗粒在软化和熔化阶段与扇形式等式的气体渗透性评价

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Negative effect from low coke rate operation at cohesive zone is obvious because it makes thinning of coke slit thickness. Correct knowledge about gas permeability of cohesive layer is becoming more and more important. In order to precisely understand cohesive behaviour, a softening and melting simulator under rapid heating and quenching conditions was applied for clarify a determinant factor of gas permeability behaviour. To focus on softening and melting behaviour, granulated slag particle bed layer without iron oxide was prepared as packed bed sample layer can show softening and melting. The packed bed slag samples in graphite crucible were rapidly heated up to 1200°C, and then gradually heated up to 1500°C with 10°C/min under inert gas atmosphere and 0.1 MPa load. Gas pressure drop and shrinkage degree of the sample layer were measured during the softening and melting test, and quenched sample was made at certain temperature when the maximum gas pressure drop was measured. The CT observation of the quenched sample provided 3D shape information of gas path shape in sample packed bed. Gas pressure drop was estimated with fanning’s equation with the gas path information. The estimation values were shown positive correlation with measured maximum pressure drop. The CT observation also gave triple line length among molten slag, graphite, and gas. Combination the triple line length and molten slag surface tension could use for evaluation of static force balance when maximum pressure drop obtained.
机译：从粘性区域的低焦速率操作的负面影响是显而易见的，因为它使焦炭狭缝厚度变薄。关于粘性层的燃气渗透性的纠正知识变得越来越重要。为了精确地理解粘性行为，应用了快速加热和淬火条件下的软化和熔化模拟器，以澄清透气性行为的决定因素。为了专注于软化和熔化行为，制备没有氧化铁的颗粒状矿渣颗粒床层，因为填充床样品层可以显示软化和熔化。石墨坩埚中的填充床渣样品迅速加热至1200℃，然后在惰性气体气氛下逐渐加热10℃/ min，沿惰性气体气氛和0.1MPa负荷加热。在软化和熔化试验期间测量样品层的气体压降和收缩程度，并且当测量最大气体压降时，在一定温度下进行淬火样品。淬火样品的CT观察为样品填充床中的气体路径形状提供了3D形状信息。通过扇形式等式与气体路径信息估计气体压降。估计值与测量的最大压降显示正相关。 CT观察也在熔融渣，石墨和气体中进行三线长度。组合三线长度和熔渣表面张力可用于在获得最大压降时评估静力平衡。

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