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Solution chemistry of carbonate minerals and its effects on the flotation of hematite with sodium oleate 被引量:6
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作者 Dong Li Wan-zhong Yin +3 位作者 Ji-wei Xue Jin Yao Ya-feng Fu Qi Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2017年第7期736-744,共9页
The effects of carbonate minerals(dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution ... The effects of carbonate minerals(dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared(FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy(XPS) analyses. The results of flotation tests show that the presence of siderite or dolomite reduced the recovery of hematite and that the inhibiting effects of dolomite were stronger. Dissolution measurements, solution chemistry calculations, and flotation tests confirmed that both the cations(Ca^(2+) and Mg^(2+)) and CO_3^(2+)ions dissolved from dolomite depressed hematite flotation, whereas only the 23CO-ions dissolved from siderite were responsible for hematite depression. The zeta-potential, FTIR spectroscopic, and XPS analyses indicated that Ca^(2+), Mg^(2+), and CO_3^(2-)(HCO_3^-) could adsorb onto the hematite surface, thereby hindering the adsorption of sodium oleate, which was the main reason for the inhibiting effects of carbonate minerals on hematite flotation. 展开更多
关键词 hematite carbonate minerals solution chemistry sodium oleate flotation
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Electrochemical and spectroscopic study of interfacial interactions between chalcopyrite and typical flotation process reagents 被引量:3
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作者 Gustavo Urbano Isabel Lázaro +3 位作者 Israel Rodríguez Juan Luis Reyes Roxana Larios Roel Cruz 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2016年第2期127-136,共10页
Comparative voltammetry and differential double-layer capacitance studies were performed to evaluate interfacial interactions between cnalcopyrite(CuFeS2) and n-isopropyl xanthate(X) in the presence of ammonium bi... Comparative voltammetry and differential double-layer capacitance studies were performed to evaluate interfacial interactions between cnalcopyrite(CuFeS2) and n-isopropyl xanthate(X) in the presence of ammonium bisulfite/39wt%SO2 and caustic starch at different pH values.Raman spectroscopy,Fourier transform infrared(FTIR) spectroscopy,contact angle measurements,and microflotation tests were used to establish the type and extent of xanthate adsorption as well as the species involved under different mineral surface conditions in this study.The results demonstrate that the species that favor a greater hydrophobicity of chalcopyrite are primarily CuX and S^0,whereas oxides and hydroxides of Cu and Fe as well as an excess of starch decrease the hydrophobicity.A conditioning of the mineral surface with ammonium bisulfite/39wt%SO2 at pH 6 promotes the activation of surface and enhances the xanthate adsorption.However,this effect is diminished at pH ≥ 8,when an excess of starch is added during the preconditioning step. 展开更多
关键词 sulfide minerals chalcopyrite xanthates flotation interfacial reactions electrochemistry spectroscopy
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STUDIES ON THE FROTH CHARACTERISTICS OF COMPOSITE COLLECTORS IN NONMETALLIC MINERAL FLOTATION
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作者 许时 梅贤功 翁伟雄 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1990年第1期13-20,共8页
The flotation results of a phosphate ore are improved by replacing the conventional collectors of fatty acids with composite collectors. The synergistic effect on the froth characteristics in systems using composite c... The flotation results of a phosphate ore are improved by replacing the conventional collectors of fatty acids with composite collectors. The synergistic effect on the froth characteristics in systems using composite collectors has then been studied, and the concept of 'mixed hemimicellae' has been proposed in the adsorption of composite collectors at the air/solution interfaces. 展开更多
关键词 STUDIES ON THE FROTH CHARACTERISTICS OF COMPOSITE COLLECTORS IN NONMETALLIC MINERAL flotation ADA
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STUDY ON FLOTATION OF RARE EARTH MINERALS WITH P538 AND ITS MECHANISM
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作者 周高云 罗家珂 《Journal of Rare Earths》 SCIE EI CAS CSCD 1990年第4期296-300,共5页
The properties and collecting ability of a new collector,monoalkyl ester phosphoric acid(P538),for the flotation of rare earth minerals are described in the paper.The mechanism of P538 adsorption on the surfaces of mo... The properties and collecting ability of a new collector,monoalkyl ester phosphoric acid(P538),for the flotation of rare earth minerals are described in the paper.The mechanism of P538 adsorption on the surfaces of monazite or bastnaesite is explored by modern measuring techniques,such as IR and ESCA,etc. 展开更多
关键词 ESCA STUDY ON flotation OF RARE EARTH MINERALS WITH P538 AND ITS MECHANISM
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Structural Analysis of Hydroxamate Reagents by X-Ray Diffraction 被引量:1
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作者 Ratan Chowdhury Frank Antolasic 《Journal of Earth Science and Engineering》 2012年第10期584-589,共6页
Axis House manufactures and supplies alkyl hydroxamate reagent of various carbon chain lengths for application in flotation of oxide copper and other minerals. As a part of reagent performance improvement, the structu... Axis House manufactures and supplies alkyl hydroxamate reagent of various carbon chain lengths for application in flotation of oxide copper and other minerals. As a part of reagent performance improvement, the structural factors of hydroxamate are examined by various analytical tools in particular with X-ray diffraction of single crystals. In a recent publication, the structures of n-octyl hydroxamic acid and its corresponding potassium salt are presented with findings of hydroxamic functional group geometric preference, H-bonding, keto-enol tautomerisation, acid-salt aggregation and alignment of carbon chain. In this paper, an example of branched alkyl hydroxamate3,5,5-trimethyl hexyl hydroxamate. hydroxamate is presented and compared with the result of linear alkyl 展开更多
关键词 Alkyl hydroxamic acid potassium alkyl hydroxamate X-ray crystal structures flotation of oxide copper minerals.
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Review of the research on the development and utilization of clay-type lithium resources 被引量:4
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作者 Ruiqi Xie Zhihui Zhao +3 位作者 Xiong Tong Xian Xie Qiang Song Peiqiang Fan 《Particuology》 SCIE EI CAS CSCD 2024年第4期46-53,共8页
Since the demands for lithium have been in explosive growth recently and several great clay lithium resources were founded in China,the development and utilization of clay-type lithium resources become a hot topic.In ... Since the demands for lithium have been in explosive growth recently and several great clay lithium resources were founded in China,the development and utilization of clay-type lithium resources become a hot topic.In order to provide a guidance for the concentration and extracting lithium of clay-type lithium resources,this review systematically summarized the main types and characteristics of clay-type lithium resources and the research status of lithium extraction from clay lithium resources.Meanwhile,the flotation research status of the main mineral of clay lithium ore was also summarized.Furthermore,we discussed the difficulties in the development and utilization of clay-type lithium ore and put forward the subsequent research orientation.This paper can provide a guidance for the con-centration and extracting lithium of clay-type lithium resources in the future. 展开更多
关键词 Clay lithium Clay mineral flotation Lithium extraction LEACHING
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