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首页> 外文会议>Asia steel international conference >Numerical Modeling of Iron Flow and Bottom Erosion in the Blast FurnaceHearthduringthe Tapping Process
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Numerical Modeling of Iron Flow and Bottom Erosion in the Blast FurnaceHearthduringthe Tapping Process

机译：高炉中铁流动和底部侵蚀的数值模拟攻门过程

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The campaign life of a blast furnace (BF) is determined by its lowest part,i.e.the hearth,which suffers from severe erosion.It is impossible to directly monitor the state of the hearth,and the furnace has to be stopped if the hearth is severely worn.Timely prediction of the hearth erosion is therefore prerequisite for a stable BF operation where proper measures are taken to protect the hearth lining.Even if the bottom is believed to be a vulnerable part of the hearth,the erosion of it has not received much attention.A comprehensive computational fluid dynamic (CFD) model is developed to extend the relevant knowledge on fluid flow and refractory erosion,especially at the hearth bottom.For the CFD model,the time-dependent dead man state is computed by a BF drainage model,which is based on first principles and is capable to reproduce the overall behavior of the tap cycles.Simulations with the CFD model are applied to illustrate how the main factors in the hearth,such as the flow pattern and bottom erosion ratio,evolve during the iron-only flow period of a typical tapping process.It is demonstrated that the dead man plays an important role for the flow behavior and erosion conditions in the BF hearth.
机译：高炉（BF）的运动生命是由它的最低部分确定，iethe炉，这严重erosion.It遭受无法直接监视炉膛的状态，炉具有如果炉膛被停止因此炉膛侵蚀严重worn.Timely预测是先决条件，哪里采取适当的措施，以保护炉膛lining.Even如果底部被认为是该炉的脆弱的部分，它的侵蚀没有收到一个稳定的高炉操作多attention.A全面的计算流体动力学（CFD）模型来延长流体流动和耐火材料侵蚀的相关知识，特别是在炉膛bottom.For CFD模型，依赖于时间的死人状态由BF排水计算模型，该模型是基于第一原理，并且能够再现与CFD模型抽头cycles.Simulations的整体行为被施加来说明如何在炉膛的主要因素，如流动模式中的第二底部侵蚀率，在一个典型的攻process.It的铁止流周期演变证明了死人起在炉缸的流动行为和侵蚀条件的一个重要角色。

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