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首页> 外文期刊>ISIJ international >Cold Model Study of Blast Gas Discharge from the Taphole during the Blast Furnace Hearth Drainage
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Cold Model Study of Blast Gas Discharge from the Taphole during the Blast Furnace Hearth Drainage

机译：高炉炉膛排水过程中出气孔高炉煤气排放的冷模型研究。

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Blast gas discharge from the taphole in the course of the blast furnace hearth drainage was experimentally studied using a packed bed cold model. It was found that gas break-through time was strongly influenced by the furnace operating conditions and coke bed structure. Gas break-through time decreases with (a) increasing draining rate; (b) decreasing slag and iron levels in the hearth; and (c) increasing slag viscosity. It increases with an increase in the coke-free layer depth and coke-free space width. Under certain conditions, the gas-liquid interface in the region directly above the taphole becomes unstable, leading to viscous finger formation and subsequently early blast gas discharge from the taphole. The amount of blast gas entrained into the taphole due to viscous fingering, when it occurs, is sufficient to cause a splashy taphole stream.
机译：使用填充床冷模型对高炉炉床排水过程中从出铁孔排出的高炉煤气进行了实验研究。已经发现，气体的穿透时间受炉子的操作条件和焦炭床结构的强烈影响。瓦斯穿透时间随着（a）排量的增加而减少; （b）减少炉膛中的炉渣和铁含量; （c）提高炉渣粘度。它随着无焦层深度和无焦空间宽度的增加而增加。在某些条件下，出气孔正上方的区域中的气液界面变得不稳定，导致形成粘性指状物，并随后从出气孔早期排出爆炸气体。由于粘滞指法而夹带入出铁孔的爆炸气体的量足以引起飞溅的出铁孔流。

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