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| Mechanism of Sodium Carbonate-Assisted Carbothermic Reduction of Titanomagnetite Concentrate | |
| Chen, Lu-Ming1; Zhen, Yu-Lan1; Zhang, Guo-Hua2; Chen, Desheng1; Wang, Lina1; Zhao, Hongxin1; Liu, Yahui1; Meng, Fancheng1; Wang, Meng3; Qi, Tao1 | |
| 2022-08-01 | |
| Source Publication | METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
 |
| ISSN | 1073-5615 |
| Volume | 53Issue:4Pages:2272-2292 |
| Abstract | 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 |
| DOI | 10.1007/s11663-022-02528-z |
| Language | 英语 |
| WOS Keyword | VANADIUM-TITANIUM MAGNETITE ; SOLID-STATE REDUCTION ; BLAST-FURNACE SLAG ; CO-CO2 REACTION ; IRON ; KINETICS ; RECOVERY ; BEHAVIOR ; DECOMPOSITION ; MODEL |
| Funding Project | 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 Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | 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 |
| WOS ID | WOS:000850073000025 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54643 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhen, Yu-Lan |
| Affiliation | 1.Univ Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China 3.Hebei Zhongke Tongchuang Vanadium & Titanium Tech, Hengshui 053099, Hebei, Peoples R China |
| Recommended Citation 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. |
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