Surface chemistry features in the flotation of KCl
文献类型：期刊论文
| 作者 | Cao, Qinbo1; Du, Hao2; Miller, Jan D.3; Wang, Xuming3; Cheng, Fangqin1 |
| 刊名 | MINERALS ENGINEERING
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 23期号:5页码:365-373 |
| 关键词 | KCl flotation Contact angle Adsorption Molecular dynamics simulation |
| ISSN号 | 0892-6875 |
| 通讯作者 | Cheng, FQ |
| 英文摘要 | Despite the successful industrial practice to recover KCl by flotation, the adsorption state of collectors at KCl salt surfaces is still not fully understood. In this paper, the flotation behavior of KCl and NaCl using different collectors and captive bubble contact angle measurements at KCl and NaCl crystal surfaces in their saturated solutions are reported. The influence of collector concentration and collector structure is considered. The results show that both cationic and anionic collectors produce a hydrophobic state at the structure breaking KCl salt surface, with finite contact angle values of between 30 degrees and 60 degrees. In contrast, the contact angle at the structure making NaCl salt surface is zero at all collector concentrations, suggesting that no collector adsorption occurs, a supposition that is supported by results from molecular dynamics simulation (MDS). Further, it appears that the presence of surface defects such as edges and corners promote the adsorption of collectors at the KCl surface, and that the flotation is achieved by bubble attachment at the edges/corners of KCl particles with the formation of aeroflocs. (C) 2009 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Chemical ; Mineralogy ; Mining & Mineral Processing |
| 研究领域[WOS] | Engineering ; Mineralogy ; Mining & Mineral Processing |
| 关键词[WOS] | MOLECULAR-DYNAMICS SIMULATION ; INTERFACIAL WATER-STRUCTURE ; ALKALI-HALIDE PARTICLES ; BICARBONATE SALTS ; AQUEOUS-SOLUTIONS ; BRINE INTERFACE ; FORCE-FIELD ; SYSTEMS ; ASSOCIATION ; ADSORPTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000276537000001 |
| 公开日期 | 2013-11-19 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6175]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Shanxi Univ, Taiyuan 030006, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Univ Utah, Dept Met Engn, Coll Mines & Earth Sci, Salt Lake City, UT 84112 USA |
| 推荐引用方式 GB/T 7714 | Cao, Qinbo,Du, Hao,Miller, Jan D.,et al. Surface chemistry features in the flotation of KCl[J]. MINERALS ENGINEERING,2010,23(5):365-373. |
| APA | Cao, Qinbo,Du, Hao,Miller, Jan D.,Wang, Xuming,&Cheng, Fangqin.(2010).Surface chemistry features in the flotation of KCl.MINERALS ENGINEERING,23(5),365-373. |
| MLA | Cao, Qinbo,et al."Surface chemistry features in the flotation of KCl".MINERALS ENGINEERING 23.5(2010):365-373. |
入库方式： OAI收割
来源：过程工程研究所
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