Influence of O_2 Content in Circulating Flue Gas on Iron Ore Sintering
Influence of O_2 Content in Circulating Flue Gas on Iron Ore Sintering作者机构:School of Minerals Processing and Bioengineering Central South University
出 版 物:《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research,International)
年 卷 期:2013年第20卷第6期
页 面:1-6页
核心收录:
学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 0801[工学-力学(可授工学、理学学位)] 0702[理学-物理学]
基 金:Item Sponsored by National Natural Science Foundation of China ( 51174253 ) Fundamental Research Funds for Central Universities of China ( NCET-05-0630 ) Graduate Student Degree Thesis Innovation Foundation of Hunan Province of China (1343/74333001114)
主 题:flue gas circulation sintering heat front flame front sintering metallogenium
摘 要:Circulating flue gas can reduce the emission of flue gas , and furthermore , it can reuse the waste heat effectively in the sintering *** with conventional sintering , O2 that gets through the sintering bed decreases because of substituting circulating gas for *** influences of O2 content on sintering process are studied through simulating the flue gas circulation sintering with artificial *** shows that , with the reducing of O2 content in circulating gas , the combustion speed of fuel decreases and incomplete combustion degree increases , which makes the flame front fall behind the heat front and reduces the heat utilization efficiency of *** ultimate result is that the temperature of sintering bed decreases and the liquid phase *** addition , the reducing atmosphere is strengthened because of flue gas circulation , which makes the magnetite increase yet calcium ferrite reduce gradually. Because the content of calcium ferrite with good strength reduces , the sinter yield and tumble strength *** ensure the sinter index , the favorable O2 content of circulating flue gas is no less than 15%.