Reduction Behavior of Sinter Based on Top Gas Recycling-Oxygen Blast Furnace

作     者：LAN Rong-zong 1 , 2 , WANG Jing-song 1 , HAN Yi-hua 1 , SHE Xue-feng 1 , WANG Lin-tao 1 , XUE Qing-guo 1 ( 1.State Key Laboratory of Advanced Metallurgy , University of Science and Technology Beijing , Beijing 100083 , China 2.China Railway Materials Xiamen Steel Co Ltd , Xiamen 361008 , Fujian , China ) 

作者机构：[a] State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China [b] China Railway Materials Xiamen Steel Co Ltd Xiamen 361008 Fujian China 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2012年第19卷第9期

页      面：13-19页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 

基　　金：Item Sponsored by National Basic Research Program of China ( 973Program )( 2012CB720401) National Key Technology Research and Development Program in 12th Five-Year Plan of China ( 2011BAC01B02) 

主　　题：oxygen blast furnace sinter reduction 

摘      要：In order to explore the behavior laws of sinter reduction in TGR-OBF ( top gas recycling-oxygen blast furnace ), reduction experiments of sinter have been conducted by thermal balance mass loss method with different atmospheres , temperatures and volume *** changes of RI ( reduction degree of Fe 2 O 3 ), RI′ ( reduction rate of Fe 2 O 3 ) and r ( reduction degree of FeO ) have been *** results show that the reduction of sinter was significantly improved under TGR-OBF atmosphere , and the RIand r were measured up to 98.2%and 97.8%at 900℃ *** increasing of the reduction temperature , the reduction of sinter speeded up greatly , and the reduction time-duration shortened from 117min at 900 ℃ to 63min at 1 100 ℃.Moreover , the reduction of sinter enhanced with increasing of the reductive gas *** the flow increased from 10to 15L / min , the initial reduction rate of sinter increased from 2.47% / min to 3.73% / *** increasing H2and CO contents in the reductive atmosphere , the reduction of sinter was *** , H 2 influenced more evidently than CO to the reduction of sinter , especially in the later stage of the reduction process , for instance , the reduction of wustite will be improved enormously when increasing the H2content in the reductive atmosphere.