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Mechanism of Sodium Carbonate-Assisted Carbothermic Reduction of Titanomagnetite Concentrate

文献类型：期刊论文

作者Chen, Lu-Ming2; Zhen, Yu-Lan2; Zhang, Guo-Hua3; Chen, Desheng2; Wang, Lina2; Zhao, Hongxin2; Liu, Yahui2; Meng, Fancheng2; Wang, Meng1; Qi, Tao2
刊名METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
出版日期2022-08-01
卷号53期号:4页码:2272-2292
ISSN号1073-5615
DOI10.1007/s11663-022-02528-z
英文摘要The molten Na2CO3-assisted carbothermic reduction followed by water leaching is a promising process to comprehensively utilize the titanomagnetite concentrate. In this study, the effects of temperature, graphite component, and Na2CO3 component on the iso-carbothermic reduction of titanomagnetite in argon atmosphere were investigated. Thermodynamic analysis results speculated reduction of iron oxides in titanomagnetite concentrate in Na-Fe-Ti-C-O system at 1423 K to 1523 K were feasible, and low-valence titanium oxide was not formed with the existence of Na2O. The iso-reaction mechanisms and kinetic analyses of Na2CO3-titanomagnetite, Na2CO3-graphite, graphite-titanomagnetite, and Na2CO3-graphite-titanomagnetite were investigated at 1523 K. In the roasting process of Na2CO3 and titanomagnetite, Na2CO3 destroyed the crystal structure of titanomagnetite and oxidized Fe2+ to Fe3+, generating CO gas. Thus, with the assistance of Na2CO3, the carbothermic reduction rate of titanomagnetite was expedited. Compared with the direct reduction process, after adding Na2CO3, the apparent reduction activation energy of iron oxides decreased from 165.56 to 87.25 kJ.mol(-1). (C) The Minerals, Metals & Materials Society and ASM International 2022
WOS关键词VANADIUM-TITANIUM MAGNETITE ; SOLID-STATE REDUCTION ; BLAST-FURNACE SLAG ; CO-CO2 REACTION ; IRON ; KINETICS ; RECOVERY ; BEHAVIOR ; DECOMPOSITION ; MODEL
资助项目National Key R&D Program of China[2018YFC1900500] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04010100] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; National Natural Science Foundation of China[21908231] ; Special Project for Transformation of Major Technological Achievements in Hebei province[19044012Z] ; Province Key R&D Program of Hebei[20374105D] ; CAS Interdisciplinary Innovation Team
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者SPRINGER
WOS记录号WOS:000850073000025
资助机构National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Special Project for Transformation of Major Technological Achievements in Hebei province ; Province Key R&D Program of Hebei ; CAS Interdisciplinary Innovation Team
源URL[http://ir.ipe.ac.cn/handle/122111/54642]  
专题中国科学院过程工程研究所
通讯作者Zhen, Yu-Lan
作者单位1.Hebei Zhongke Tongchuang Vanadium & Titanium Tech, Hengshui 053099, Hebei, Peoples R China
2.Univ Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Lu-Ming,Zhen, Yu-Lan,Zhang, Guo-Hua,et al. Mechanism of Sodium Carbonate-Assisted Carbothermic Reduction of Titanomagnetite Concentrate[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2022,53(4):2272-2292.
APA Chen, Lu-Ming.,Zhen, Yu-Lan.,Zhang, Guo-Hua.,Chen, Desheng.,Wang, Lina.,...&Qi, Tao.(2022).Mechanism of Sodium Carbonate-Assisted Carbothermic Reduction of Titanomagnetite Concentrate.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,53(4),2272-2292.
MLA Chen, Lu-Ming,et al."Mechanism of Sodium Carbonate-Assisted Carbothermic Reduction of Titanomagnetite Concentrate".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 53.4(2022):2272-2292.

入库方式： OAI收割

来源：过程工程研究所

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