Pulverized Coal Combustion of Nitrogen Free Blast Furnace  

作　　者：ZHANG Jian-liang WANG Guang-wei SHAO Jiu-gang CHEN Yong-xing YANG Tian-jun 

机构地区：[1]School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing

出　　处：《Journal of Iron and Steel Research International》2013年第3期1-5,共5页

基　　金：Item Sponsored by National Basic Research Program of China(2012CB720401);National Key Technology Research and Development Program in 12th Five-Year Plan of China(2011BAC01B02);National Natural Science Foundation of China(51134008)

摘　　要：The efficiency of coal combustion is an important factor for the blast furnace process.The influence of low xO/xC on coal combustion performance under nitrogen free blast furnace condition was researched through the self-developed pulverized coal burning device.The results show that the coal combustion rate reduces with xO/xC decreasing,and the combustion rate of bituminous coal is higher than that of anthracite.The coal combustion rate ascends with the rise of volatile matter,but when volatile matter of pulverized coal is more than 18%,the combustion rates will not increase correspondingly.Small amount of CaCO3 and CO2 additions can promote coal combustion,and the effect of CaCO3 is more apparent,which can increase the pulverized coal combustion rate by 15%-18% or so.The efficiency of coal combustion is an important factor for the blast furnace process.The influence of low xO/xC on coal combustion performance under nitrogen free blast furnace condition was researched through the self-developed pulverized coal burning device.The results show that the coal combustion rate reduces with xO/xC decreasing,and the combustion rate of bituminous coal is higher than that of anthracite.The coal combustion rate ascends with the rise of volatile matter,but when volatile matter of pulverized coal is more than 18%,the combustion rates will not increase correspondingly.Small amount of CaCO3 and CO2 additions can promote coal combustion,and the effect of CaCO3 is more apparent,which can increase the pulverized coal combustion rate by 15%-18% or so.

关 键 词：nitrogen free blast furnace xO/xC pulverized coal combustion 

分 类 号：TF053[冶金工程—冶金物理化学]