Leaching Behavior and Kinetics of Ilmenite Ore with NaOH Hydrothermal Method
文献类型：期刊论文
| 作者 | Gao Minglei2,3; Xue Xiangxin3; Wang Shaona1; Li Lanjie2; Yang He3; Zhao Beibei2; Chang Fuzeng2 |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 49期号:5页码:1512-1520 |
| 关键词 | ilmenite ore NaOH hydrothermal method titanium leaching degree leaching behavior kinetics |
| ISSN号 | 1002-185X |
| 英文摘要 | The leaching behavior and kinetics of ilmenite ore in NaOH hydrothermal system were researched, and an innovative metallurgical process of leaching titanium from ilmenite ore by NaOH hydrothermal method was proposed to overcome the severe dilute H2SO4 waste water pollution of current titanium extraction process in industry. Results that the optimal reaction conditions are as follows: the reaction temperature 240 degrees C, NaOH concentration 400 g.L-1, the mass ratio of alkali to ore 3.5:1, partial oxygen pressure 0.5 MPa, reaction time 2 h, agitation speed 600 r/min, and ore particle size <75 mu m, and the leaching degree of titanium can reach 95%. Based on XRD analyses and SEM microstructure observation, the decomposition behavior of ilmenite ore was investigated and the generating of sodium titanium particles was observed. The producing phenomenon of the product layer is not found during leaching. The leaching kinetics study shows that the leaching rate of ilmenite ore in NaOH hydrothermal system is controlled by the solid product layer diffusion with the apparent activation energy of 47.39 kJ/mol, and the empirical rate equation is "1-2X/3-(1-X)(2/3)=[735.09exp(-47389.8/RT)]t". |
| WOS关键词 | HYDROCHLORIC-ACID ; DECOMPOSITION |
| 资助项目 | Natural Science Foundation of Hebei Province[E2017318007] ; Key Program of National Natural Science Foundation of China[U1502273] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000554635000007 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| 资助机构 | Natural Science Foundation of Hebei Province ; Key Program of National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/41635]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Xue Xiangxin |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.HBIS Grp ChengSteel, Chengde 067102, Peoples R China 3.Northeastern Univ, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao Minglei,Xue Xiangxin,Wang Shaona,et al. Leaching Behavior and Kinetics of Ilmenite Ore with NaOH Hydrothermal Method[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49(5):1512-1520. |
| APA | Gao Minglei.,Xue Xiangxin.,Wang Shaona.,Li Lanjie.,Yang He.,...&Chang Fuzeng.(2020).Leaching Behavior and Kinetics of Ilmenite Ore with NaOH Hydrothermal Method.RARE METAL MATERIALS AND ENGINEERING,49(5),1512-1520. |
| MLA | Gao Minglei,et al."Leaching Behavior and Kinetics of Ilmenite Ore with NaOH Hydrothermal Method".RARE METAL MATERIALS AND ENGINEERING 49.5(2020):1512-1520. |
入库方式： OAI收割
来源：过程工程研究所
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