Process Optimization of Potassium Release from K-Feldspar by Combining Calcination and Hydrothermal Method
文献类型：期刊论文
| 作者 | Liu, Shanke1,2; Han, Cheng1,2; Liu, Jianming1,2 |
| 刊名 | CHEMISTRYSELECT
 |
| 出版日期 | 2020-01-16 |
| 卷号 | 5期号:2页码:522-527 |
| 关键词 | calcination hydrothermal K-feldspar phase analysis process optimization |
| ISSN号 | 2365-6549 |
| DOI | 10.1002/slct.201904278 |
| 英文摘要 | An optimized process of the hydrothermal treatment of potassium feldspar (K-feldspar) and lime to obtain a potash alternative is reported. The optimization did not change a two-key-step process and only modified the first step, in which K-feldspar was calcined together with calcium carbonate. However, this modified treatment greatly improved the dissolution of K-feldspar, and the released K+Al+Si content was increased by 43 %. Phase analysis showed that new phases (i. e., leucite, larnite, and portlandite) appeared, and the structure of K-feldspar was destroyed during calcination. After the hydrothermal reaction (i. e., the second step), many new mineral phases were generated: butschliite, calcite, hibschite, tobermorite, and alpha-dicalcium silicate hydrate. Therefore, the optimized product showed better physicochemical properties. In addition, the activity of lime was investigated to evaluate its effect on the hydrothermal dissolution of K-feldspar. The optimized hydrothermal product, as a potential commodity, was evaluated from technological and environmental points of view. |
| WOS关键词 | CARBONATE PRECIPITATION ; CALCIUM SILICATE ; CO2 ; MINERALIZATION ; DECOMPOSITION ; DISSOLUTION ; FERTILIZER ; MECHANISM ; KINETICS ; REMOVAL |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000507660100012 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95891]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Liu, Shanke |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shanke,Han, Cheng,Liu, Jianming. Process Optimization of Potassium Release from K-Feldspar by Combining Calcination and Hydrothermal Method[J]. CHEMISTRYSELECT,2020,5(2):522-527. |
| APA | Liu, Shanke,Han, Cheng,&Liu, Jianming.(2020).Process Optimization of Potassium Release from K-Feldspar by Combining Calcination and Hydrothermal Method.CHEMISTRYSELECT,5(2),522-527. |
| MLA | Liu, Shanke,et al."Process Optimization of Potassium Release from K-Feldspar by Combining Calcination and Hydrothermal Method".CHEMISTRYSELECT 5.2(2020):522-527. |
入库方式： OAI收割
来源：地质与地球物理研究所
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