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21. 发明公开

KR1020040040884A 고로 저부의 냉각제 압입방법 有权
标题翻译：将冷却剂注入火炉底部的方法
公开(公告)号：KR1020040040884A
公开(公告)日：2004-05-13
申请号：KR1020020069226
申请日：2002-11-08
申请人： 주식회사 포스코
发明人： 안준영 , 정주태 , 박성원
IPC分类号： C21B7/10
CPC分类号： C21B7/106 , F27B1/24 , F27D1/12
摘要： PURPOSE: A method for injecting coolant into the bottom part of blast furnace is provided to improve productivity and perform safe operation by injecting the coolant thereinto during operation of the blast furnace as well as stopping of the blast furnace, thereby preventing degradation and cooling of the bottom part of the blast furnace. CONSTITUTION: The method comprises first step of coupling a heavy oil injection hose(9) to an extension pipe(7) and injecting 22 to 30 kg of heavy oil into the heavy oil injection hose at an injection pressure of 15 to 18 kg/cm¬2 after performing injection preparation work for securing fluidity of heavy oil; second step of coupling a carbon paste injection hose(11) to the extension pipe and injecting 21 kg or less of carbon paste into the carbon paste injection hose at an injection pressure of 18 to 20 kg/cm¬2 after performing injection preparation work for securing fluidity of carbon paste; and third step of coupling the heavy oil injection hose(9) to the extension pipe(7) and injecting 50 to 80 kg of heavy oil into the heavy oil injection hose at an injection pressure of 18 to 20 kg/cm¬2 after performing injection preparation work for securing fluidity of heavy oil so that carbon paste is not stuck to the inside of the extension pipe, wherein an end part of the extension pipe is installed at an upper part of tuyere box(6) onto which seawater is sprayed.
摘要翻译：目的：提供一种将冷却剂注入高炉底部的方法，以提高生产效率，通过在高炉操作过程中将冷却剂注入其中并进行安全操作，并且可以防止高炉的退化和冷却高炉底部。构成：该方法包括将重油注射软管（9）连接到延伸管（7）的第一步骤，并以15至18kg / cm 2的注射压力将22至30kg重油注入重油注射软管执行注油准备工作后确保重油流动性; 将碳浆注射软管（11）与延伸管连接的第二步骤，并且在进行注射制备工作之后，以18至20kg / cm 2的注射压力将21kg或更少的碳浆注入碳糊注射软管中确保碳浆的流动性; 以及将重油注射软管（9）连接到延长管（7）的第三步骤，并且在执行后，以18至20kg / cm 2的注射压力将50至80kg重油注入重油注射软管注射准备工作用于确保重油的流动性，使得碳糊不粘附到延伸管的内部，其中延伸管的端部安装在其上喷洒海水的风口箱（6）的上部。

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