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Recovery of carbon and cryolite from spent pot lining of aluminium reduction cells by chemical leaching
文献类型：期刊论文
| 作者 | Shi Zhongning; Li Wei; Hu Xianwei; Ren Bijun; Gao Bingliang; Wang Zhaowen |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:1页码:222-227 |
| 关键词 | spent pot lining recovery chemical leaching aluminium electrolysis |
| ISSN号 | 1003-6326 |
| 其他题名 | Recovery of carbon and cryolite from spent pot lining of aluminium reduction cells by chemical leaching |
| 英文摘要 | A two-step alkaline-acidic leaching process was conducted to separate the cryolite from spent pot lining and to purify the carbon. The influencing factors of temperature, time, and the ratio of liquid to solid in alkaline and acidic leaching were investigated. The results show that the recovery of soluble compounds of Na3AlF6 and Al2O3 dissolving into the solution during the NaOH leaching is 65.0%, and the purity of carbon reaches 72.7%. During the next step of HCl leaching, the recovery of soluble compounds of CaF2 and NaAl11O17 dissolving into the HCl solution is 96.2%, and the carbon purity increases to 96.4%. By mixing the acidic leaching solution and the alkaline leaching solution, the cryolite precipitates under a suitable conditions of pH value 9 at 70 degrees C for 2 h. The cryolite precipitating rate is 95.6%, and the purity of Na3AlF6 obtained is 96.4%. |
| 资助项目 | [National Natural Science Foundation of China] |
| 语种 | 英语 |
| CSCD记录号 | CSCD:4453973 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/146568]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Shi Zhongning,Li Wei,Hu Xianwei,et al. Recovery of carbon and cryolite from spent pot lining of aluminium reduction cells by chemical leaching[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2012,22(1):222-227. |
| APA | Shi Zhongning,Li Wei,Hu Xianwei,Ren Bijun,Gao Bingliang,&Wang Zhaowen.(2012).Recovery of carbon and cryolite from spent pot lining of aluminium reduction cells by chemical leaching.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,22(1),222-227. |
| MLA | Shi Zhongning,et al."Recovery of carbon and cryolite from spent pot lining of aluminium reduction cells by chemical leaching".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 22.1(2012):222-227. |
入库方式： OAI收割
来源：金属研究所
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