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Some physicochemical aspects of water-soluble mineral flotation
Wu, Zhijian1; Wang, Xuming1; Liu, Haining1; Zhang, Huifang1; Miller, Jan D.2
2016-09-01
Source PublicationADVANCES IN COLLOID AND INTERFACE SCIENCE
Volume235Pages:190-200
SubtypeArticle
AbstractSome physicochemical aspects of water-soluble mineral flotation including hydration phenomena, associations and interactions between collectors, air bubbles, and water-soluble mineral particles are presented. Flotation carried out in saturated salt solutions, and a wide range of collector concentrations for effective flotation of different salts are two basic aspects of water-soluble mineral flotation. Hydration of salt ions, mineral particle surfaces, collector molecules or ions, and collector aggregates play an important role in water-soluble mineral flotation. The adsorption of collectors onto bubble surfaces is suggested to be the precondition for the association of mineral particles with bubbles. The association of collectors with water-soluble minerals is a complicated process, which may include the adsorption of collector molecules or ions onto such surfaces, and/or the attachment of collector precipitates or crystals onto the mineral surfaces. The interactions between the collectors and the minerals include electrostatic and hydrophobic interactions, hydrogen bonding, and specific interactions, with electrostatic and hydrophobic interactions being the common mechanisms. For the association of ionic collectors with minerals with an opposite charge, electrostatic and hydrophobic interactions could have a synergistic effect, with the hydrophobic interactions between the hydrophobic groups of the previously associated collectors and the hydrophobic groups of oncoming collectors being an important attractive force. Association between solid particles and air bubbles is the key to froth flotation, which is affected by hydrophobicity of the mineral particle surfaces, surface charges of mineral particles and bubbles, mineral particle size and shape, temperature, bubble size, etc. The use of a collector together with a frother and the use of mixed surfactants as collectors are suggested to improve flotation. (C) 2016 Elsevier B.V. All rights reserved.
KeywordFlotation Water-soluble Minerals Hydration Hydrophobic Interactions Electrostatic Interactions
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordATOMIC-FORCE MICROSCOPY ; ALKALI-METAL IONS ; BUBBLE COALESCENCE ; HYDROPHOBIC HYDRATION ; MOLECULAR-DYNAMICS ; SALINE WATER ; COMPETITIVE ADSORPTION ; SURFACTANT ADSORPTION ; NONIONIC SURFACTANTS ; AQUEOUS-SOLUTIONS
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000382592900009
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6351
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
2.Univ Utah, Dept Met Engn, Coll Mines & Earth Sci, 135 S 1460 E, Salt Lake City, UT 84112 USA
Recommended Citation
GB/T 7714
Wu, Zhijian,Wang, Xuming,Liu, Haining,et al. Some physicochemical aspects of water-soluble mineral flotation[J]. ADVANCES IN COLLOID AND INTERFACE SCIENCE,2016,235:190-200.
APA Wu, Zhijian,Wang, Xuming,Liu, Haining,Zhang, Huifang,&Miller, Jan D..(2016).Some physicochemical aspects of water-soluble mineral flotation.ADVANCES IN COLLOID AND INTERFACE SCIENCE,235,190-200.
MLA Wu, Zhijian,et al."Some physicochemical aspects of water-soluble mineral flotation".ADVANCES IN COLLOID AND INTERFACE SCIENCE 235(2016):190-200.
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