Removal of Mn(II) from hydrochloric acid leach liquors of nickel laterite ore through microbubble oxidation and acid leaching
文献类型：期刊论文
| 作者 | Xu, Ziyang1,2; Wei, Guangye1; Yu, Zhihui1 ; Meng, Long1; Zheng, Shili1; Qu, Jingkui1; Qi, Tao1
|
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 210页码:9 |
| 关键词 | Nickel laterite ore Microbubble Acid leach liquor Purification Oxygen mass transfer |
| ISSN号 | 0304-386X |
| DOI | 10.1016/j.hydromet.2022.105862 |
| 英文摘要 | Leach liquor obtained from atmospheric acid leaching of nickel laterite with HCl solution contain large concentrations of Mn and Mg. This paper presents a method for separating large amounts of Mn and Mg from Ni and Co chloride solution by microbubble aeration oxidation and acid leaching processes. Such methods utilize the multiple advantages of the microbubble technology, such as large specific surface area, negatively charged surface, long stagnation, high oxygen mass transfer efficiency, and the ability to generate active oxygen. The effects of aeration pore size, oxygen flow rate, reaction temperature, stirring speed, and pH were studied. Under optimal experimental conditions (bubbling O-2 flow = 0.4 L/min, aeration aperture = 0.45 mu m, speed of agitation = 400 rpm, temperature = 50 ?, pH = 7), the recovery efficiency of Ni and Co were 99.3% and 89.0%, and the removal efficiency of Mn and Mg were 99.5% and 97.7%, respectively. Through XRD, XPS, and FTIR, it was found that soluble Mn was first oxidized to Mn(3)O(4 )and MnO2.H2O. In the acid dissolution process, Mn3O4 reacted with dilute sulfuric acid to form MnO2, which is insoluble in dilute acid, and was thus easily separated from Ni and Co. Analysis of the mass transfer process showed that the microbubble aeration method can greatly increase the oxygen mass transfer coefficient (0.073 s-1), accelerate the dissolution of O-2, and create conditions for the generation of active oxygen species. |
| WOS关键词 | SULFURIC-ACID ; MANGANESE ; EXTRACTION ; METALS ; DEGRADATION ; REDUCTION ; ABSENCE ; COBALT |
| 资助项目 | "14th Five-Year" National Key RD Program[2021YFC2902501] ; Key Research Program of the Chinese Academy of Sciences[ZDRW_CN_2020-1] ; National Key Research and Development Project[2019 YFC1907701] ; National Natural Science Foundation of China[52004264] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000793710000002 |
| 出版者 | ELSEVIER |
| 资助机构 | "14th Five-Year" National Key RD Program ; Key Research Program of the Chinese Academy of Sciences ; National Key Research and Development Project ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53380]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yu, Zhihui; Qu, Jingkui |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Xu, Ziyang,Wei, Guangye,Yu, Zhihui,et al. Removal of Mn(II) from hydrochloric acid leach liquors of nickel laterite ore through microbubble oxidation and acid leaching [J]. HYDROMETALLURGY,2022,210:9. |
| APA |
Xu, Ziyang.,Wei, Guangye.,Yu, Zhihui.,Meng, Long.,Zheng, Shili.,...&Qi, Tao.(2022). Removal of Mn(II) from hydrochloric acid leach liquors of nickel laterite ore through microbubble oxidation and acid leaching .HYDROMETALLURGY,210,9. |
| MLA |
Xu, Ziyang,et al." Removal of Mn(II) from hydrochloric acid leach liquors of nickel laterite ore through microbubble oxidation and acid leaching ".HYDROMETALLURGY 210(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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