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首页> 外文期刊>ISIJ international >Effect of Hydrogen Addition on Reduction Behavior of Ore Layer Mixed with Coke
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Effect of Hydrogen Addition on Reduction Behavior of Ore Layer Mixed with Coke

机译：加氢对焦炭混合矿石层还原行为的影响

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摘要

Low RAR (reducing agent rate) operation of the blast furnace is one of effective techniques for reducing CO_2 emissions. Coke mixed charging is a well-known and available measure to achieve low RAR operation by improving permeability and reducibility Utilization of hydrogenous reducirtg agents is afsb an efficient measure. A reduction test under load was performed to investigate the effect of coke rhixing with hydrogen addition on reduction behavior of the ore. Simultaneous use of coke mixing and hydrogen addition accelerated the reduction rate through the carbon gasification rate, and it was also decreased pressure drop. The effect of coke mixing and hydrogen addition on blast furnace operation was examined using a two-dimensional mathematical simulation model. In case of the ore layer mixed with coke, hydrogen addition in the reduction gas increased the hydrogen reduction ratio and decreased the direct reduction ratio. As a result, RAR decreased and permeability improved.
机译：高炉的低RAR（还原剂比率）操作是减少CO_2排放的有效技术之一。焦炭混合装料是通过提高渗透性和可还原性来实现低RAR操作的众所周知且可用的措施，使用氢还原剂是一种有效的措施。进行了负载下的还原试验，以研究添加氢气的焦炭搅拌对矿石还原行为的影响。焦炭混合和氢气的同时使用通过碳的气化速率加快了还原速率，并且还降低了压降。使用二维数学模拟模型检查了焦炭混合和氢气添加对高炉操作的影响。在矿石层与焦炭混合的情况下，在还原气体中添加氢会增加氢的还原率并降低直接还原率。结果，RAR降低并且渗透性提高。

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