| An efficient method of chromium extraction from chromium-containing slag with a high silicon content | |
| Yu, Kai-ping1,2,3; Chen, Bo3; Zhang, Hong-ling1,2; Zhu, Guang-jin1,2; Xu, Hong-bin1,2; Zhang, Yi1,2 | |
| 2016-06-01 | |
| 发表期刊 | HYDROMETALLURGY
 |
| ISSN | 0304-386X |
| 卷号 | 162期号:JUNE页码:86-93 |
| 摘要 | An efficient process was proposed for extracting chromium from chromium-containing slag after desilication with aqueous NaOH solution. The effect of the NaOH concentration, liquid-to-solid mass ratio, and leaching temperature on the leaching rate of silicon was investigated. The results showed that 83.78% of the silicon, 41.87% of the aluminum, and 46.42% of the vanadium were removed from the slag under suitable conditions. The kinetic analysis results showed that the leaching rate of silicon is controlled by a chemical reaction under two regimes due to the two silicon-bearing minerals presented in the slag. The first stage is limited by the reaction between NaOH and SiO2, whereas the second stage is subject to the reaction between NaOH and 2MgO center dot 2Al(2)O(3)center dot 5SiO(2). The corresponding apparent activation energies were calculated to be 67.27 kJ/mol and 35.82 kJ/mol, respectively. The extraction rate of chromium from the leaching residue using lime-free roasting reached 98.41%, which was highly superior to the 9.85% obtained from the slag without desilication. (C) 2016 Elsevier B.V. All rights reserved. |
| 关键词 | Chromium-containing Slag Desilication Kinetics Lime-free Roasting |
| 文章类型 | Article |
| WOS标题词 | Science & Technology ; Technology |
| DOI | 10.1016/j.hydromet.2016.02.020 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | VANADIUM ; FLOTATION ; IRON ; COLLECTOR ; ORES |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| WOS类目 | Metallurgy & Metallurgical Engineering |
| 项目资助者 | National Natural Science Foundation of China(11204304 ; National Basic Research Program (973 Program) of China(2013CB632600) ; National High-tech Research and Development Program of China(2011AA060702) ; 21376251 ; 21406233) |
| WOS记录号 | WOS:000376544300012 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ipe.ac.cn/handle/122111/21089 |
| 专题 | 湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Fuzhou Univ, Coll Zijin Min, Fuzhou 350108, Fujian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Kai-ping,Chen, Bo,Zhang, Hong-ling,et al. An efficient method of chromium extraction from chromium-containing slag with a high silicon content[J]. HYDROMETALLURGY,2016,162(JUNE):86-93. |
| APA | Yu, Kai-ping,Chen, Bo,Zhang, Hong-ling,Zhu, Guang-jin,Xu, Hong-bin,&Zhang, Yi.(2016).An efficient method of chromium extraction from chromium-containing slag with a high silicon content.HYDROMETALLURGY,162(JUNE),86-93. |
| MLA | Yu, Kai-ping,et al."An efficient method of chromium extraction from chromium-containing slag with a high silicon content".HYDROMETALLURGY 162.JUNE(2016):86-93. |
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| An efficient method （2815KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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