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A method for pre-reduction and heat recovery of hot sinter

机译:一种热烧结矿的预还原和热回收方法

摘要

PURPOSE: A method for pre-reduction and sensible heat recovery of hot sinter is provided to enhance the efficiency of reduction gas by recirculating reduction off-gas in a reduction furnace and to control heat recovery amount through the control of circulation amount by independently supplying circulation nitrogen to a cooled reactor. CONSTITUTION: A method for pre-reduction and sensible heat recovery of hot sinter comprises the following steps: transferring crushed hot sinter(22) to a reduction furnace; pre-reducing a part of the hot sinter by supplying reduction gas to the reduction furnace(30); putting the partly reduced sinter into a cooled reactor(50); cooling the partly reduced sinter by supplying nitrogen to the cooled reactor; putting the cooled reduced sinter into a blast furnace; and recovering sensible heat of reduction gas having an increased temperature due to the hot sinter in a pre-reduction process of the hot sinter.
机译:目的:提供一种用于热烧结矿的预还原和显热回收的方法,以通过在还原炉中再循环还原废气来提高还原气体的效率,并通过独立地供应循环来控制循环量来控制热回收量氮气送入冷却的反应器。组成:一种用于热烧结矿的预还原和显热回收的方法,包括以下步骤:将粉碎的热烧结矿(22)转移到还原炉中;通过向还原炉(30)供应还原气体来预还原一部分热烧结物;将部分还原的烧结矿放入冷却的反应器(50);通过向冷却的反应器供应氮气来冷却部分还原的烧结物;将冷却的还原烧结矿放入高炉;在热烧结体的预还原过程中,回收由于热烧结体而温度升高的还原气体的显热。

著录项

  • 公开/公告号KR100991598B1

    专利类型

  • 公开/公告日2010-11-04

    原文格式PDF

  • 申请/专利权人

    申请/专利号KR20080098469

  • 发明设计人 박흥수;조한창;이영운;조길원;

    申请日2008-10-08

  • 分类号C22B1;C21B3;

  • 国家 KR

  • 入库时间 2022-08-21 18:30:38

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