Recovery of alumina from circulating fluidized bed combustion Al-rich fly ash using mild hydrochemical process
文献类型：期刊论文
| 作者 | Yang, Quan-cheng1,2; Ma, Shu-hua1; Zheng, Shi-li1; Zhang, Ran1 |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2014-04-01 |
| 卷号 | 24期号:4页码:1187-1195 |
| 关键词 | recovery of alumina fly ash phase transformation circulating fluidized bed combustion (CFBC) |
| ISSN号 | 1003-6326 |
| 其他题名 | Trans. Nonferrous Met. Soc. China |
| 中文摘要 | To utilize CFBC Al-rich fly ash, a mild hydrochemical extraction process was investigated for recovery of alumina. An alumina extraction efficiency of 92.31% was attained using a 45% NaOH solution, an original caustic ratio (molar ratio of Na2O to Al2O3 in the sodium aluminate solution) of 25, a molar ratio of CaO to SiO2 in the fly ash of 1.1, a liquid volume to solid mass ratio of 9, a reaction temperature of 280 degrees C, and a residence time of 1 h when treating fly ash with an alumina to silica mass ratio (A/S) of 0.78 and an alumina content of 32.43%. Additionally, the alumina leaching mechanism was explored via structural and chemical analysis, which revealed that after alkaline digestion, the main solid phase containing silica was NaCaHSiO4 with a theoretical A/S of zero. |
| 英文摘要 | To utilize CFBC Al-rich fly ash, a mild hydrochemical extraction process was investigated for recovery of alumina. An alumina extraction efficiency of 92.31% was attained using a 45% NaOH solution, an original caustic ratio (molar ratio of Na2O to Al2O3 in the sodium aluminate solution) of 25, a molar ratio of CaO to SiO2 in the fly ash of 1.1, a liquid volume to solid mass ratio of 9, a reaction temperature of 280 degrees C, and a residence time of 1 h when treating fly ash with an alumina to silica mass ratio (A/S) of 0.78 and an alumina content of 32.43%. Additionally, the alumina leaching mechanism was explored via structural and chemical analysis, which revealed that after alkaline digestion, the main solid phase containing silica was NaCaHSiO4 with a theoretical A/S of zero. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | FIRED POWER-PLANTS ; COAL ; EXTRACTION ; KAOLINITE ; ELEMENTS ; CHINA |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000339276700037 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11009]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.North China Inst Sci & Technol, Coll Environm Engn, Beijing 101601, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Quan-cheng,Ma, Shu-hua,Zheng, Shi-li,et al. Recovery of alumina from circulating fluidized bed combustion Al-rich fly ash using mild hydrochemical process[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2014,24(4):1187-1195. |
| APA | Yang, Quan-cheng,Ma, Shu-hua,Zheng, Shi-li,&Zhang, Ran.(2014).Recovery of alumina from circulating fluidized bed combustion Al-rich fly ash using mild hydrochemical process.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,24(4),1187-1195. |
| MLA | Yang, Quan-cheng,et al."Recovery of alumina from circulating fluidized bed combustion Al-rich fly ash using mild hydrochemical process".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 24.4(2014):1187-1195. |
入库方式： OAI收割
来源：过程工程研究所
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