Influence of oxygen-rich hot air composite gas medium on sintering performance and function mechanism

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外文摘要：Hot air sintering technology is used to improve the quality and production efficiency of sintered ore.However,the current thick layer condition highlights the disadvantage of the low oxygen potential of the hot air sintering layer.Therefore,it is considered to use oxygen enrichment sintering to improve the environment of hot air sintering.Traditional sintering,hot air sintering,and oxygen-rich hot air sintering were compared through sintering cup experiments,and the influence of hot air and oxygen-rich hot air on sintering indexes was clarified.Hot air reduced the vertical sintering velocity,while improved the yield and tumbler index.Oxygen-rich hot air sintering contributed to improving the vertical sintering velocity while ensuring the quality of sintered ore,thus comprehensively improving production efficiency.Under the action of hot air,the highest temperature of the sintering layer increased and the high-temperature holding time was prolonged.After oxygen enrichment,the combustion efficiency of fuels in the upper layer of materials was promoted,which optimized heat distribution in the middle and lower layers of materials and increased the content of calcium ferrite in the sintered ore,thus strengthening the sintering process.

外文关键词：

Iron ore sinteringHot air sinteringOxygen enrichmentFunction mechanism

作者：

Min Gan、Hao-xiang Zheng、Xiao-hui Fan、Zhi-yun Ji、Qiang Li、Ming Wu、Yi-fan Wang、Xiao-long Wang、Yu-feng Wu、Xu-ling Chen、Zeng-qing Sun、Xiao-xian Huang

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作者单位：

School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,Hunan,China

Shanxi Taigang Stainless Steel Co.,Ltd.,Taiyuan 030003,Shanxi,China

基金：

国家自然科学基金国家自然科学基金Science and Technology Innovation Program of Hunan Province湖南省自然科学基金湖南省自然科学基金China Baowu Low Carbon Metallurgy Innovation Foundation

项目编号：

51974371522743442023RC30422023JJ200682022JJ30723BWLCF202118

出版年：

2024

DOI：

10.1007/s42243-023-01127-9

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(5)