Adsorption and zeta potential studies relevant to hematite ore reverse froth flotation
文献类型：期刊论文
| 作者 | Jiang, Wentian1,2; Sun, Chenglin1; Yang, Xu1 |
| 刊名 | minerals & metallurgical processing
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 29期号:3页码:148-155 |
| 关键词 | Flotation Anionic collectors Sodium oleate Hematite Quartz Iron/iron ores Steel making |
| 英文摘要 | reverse froth flotation is the most commonly used concentration method for iron ores, where the quartz gangue is floated, while the iron oxides are depressed by starches. in this paper, the mechanisms related to iron ore anionic reverse flotation are investigated by flotation, electrokinetic and high pulp density (20% solids) adsorption studies in alkaline medium using sodium oleate as the model collector. distribution diagrams of silicate and oleate species are employed to interpret the effects of ph on the electrokinetic and adsorption studies. the flotation experimental results showed that with ca2+ as activator, quartz responded to flotation well, whereas hematite does not. the changes in zeta potential for quartz are attributed to the hydroxylation of the quartz surface at different ph values and collector concentrations. coated starch can shift the zeta potential of hematite particles to less positive values and increase its potential differences from quartz and support quartz-hematite separation during flotation. adsorption results indicated that sodium oleate adsorbs onto the mineral surfaces to form surfactant multilayers due to the lateral interaction between hydrocarbon chains. adsorption kinetics studies showed that calcium ions can change the collector adsorption kinetics curve on quartz from first order to second order. minerals & metallurgical processing, 2012, vol. 29, no. 3, pp. 148-155. an official publication of the society for mining, metallurgy, and exploration, inc. |
| 类目[WOS] | metallurgy & metallurgical engineering ; mining & mineral processing |
| 研究领域[WOS] | metallurgy & metallurgical engineering ; mining & mineral processing |
| 关键词[WOS] | iron-ores ; quartz flotation ; aqueous-solution ; mechanism ; collectors ; interface ; magnetite ; system ; starch ; water |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000314675700003 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142860]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, Dalian, Liaoning, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Wentian,Sun, Chenglin,Yang, Xu. Adsorption and zeta potential studies relevant to hematite ore reverse froth flotation[J]. minerals & metallurgical processing,2012,29(3):148-155. |
| APA | Jiang, Wentian,Sun, Chenglin,&Yang, Xu.(2012).Adsorption and zeta potential studies relevant to hematite ore reverse froth flotation.minerals & metallurgical processing,29(3),148-155. |
| MLA | Jiang, Wentian,et al."Adsorption and zeta potential studies relevant to hematite ore reverse froth flotation".minerals & metallurgical processing 29.3(2012):148-155. |
入库方式： OAI收割
来源：大连化学物理研究所
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