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A study on the separation of magnesite fines by magnetic carrier methods

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dc.contributor.author Anastassakis, GN en
dc.date.accessioned 2014-03-01T02:41:34Z
dc.date.available 2014-03-01T02:41:34Z
dc.date.issued 1999 en
dc.identifier.issn 0927-7757 en
dc.identifier.uri http://hdl.handle.net/123456789/30543
dc.subject Carrier methods en
dc.subject Fine particles separation en
dc.subject Magnesite en
dc.subject Magnetic coating en
dc.subject Serpentine en
dc.subject.classification Chemistry, Physical en
dc.subject.other Coatings en
dc.subject.other Magnesite en
dc.subject.other Particles (particulate matter) en
dc.subject.other pH en
dc.subject.other Serpentine en
dc.subject.other Surface active agents en
dc.subject.other Surface properties en
dc.subject.other Magnetic carrier method en
dc.subject.other Magnetic coating en
dc.subject.other Separation en
dc.subject.other dodecylamine en
dc.subject.other magnetite en
dc.subject.other serpentine en
dc.subject.other surfactant en
dc.subject.other conference paper en
dc.subject.other magnetism en
dc.subject.other particle size en
dc.subject.other priority journal en
dc.subject.other suspension en
dc.subject.other zeta potential en
dc.title A study on the separation of magnesite fines by magnetic carrier methods en
heal.type conferenceItem en
heal.identifier.primary 10.1016/S0927-7757(98)00562-7 en
heal.identifier.secondary http://dx.doi.org/10.1016/S0927-7757(98)00562-7 en
heal.language English en
heal.publicationDate 1999 en
heal.abstract The separation of magnesite fines from serpentine fines by magnetic carrier methods has been examined in this study. The zeta-potential of serpentine, magnesite and magnetite was measured with and without dodecylamine as surfactant. The interaction energies between the particles were then calculated. Without the surfactant, no magnetic coating was obtained despite the favourable predictions for narrow pH ranges. When surfactant is added in suspensions of separate minerals, the serpentine particles obtain a magnetic coating strongly attached to the surface in the range 6<pH<11 while the magnesite particles obtained a weak and limited extension coating only for pH>9. The experimental results are in excellent agreement with the theoretically predicted results for serpentine and in fairly good agreement for magnesite. When artificial mixtures of serpentine and magnesite were used, the metallurgical results are slightly different from the results on separate minerals. Copyright (C) 1999 Elsevier Science B.V.The separation of magnesite fines from serpentine fines by magnetic carrier methods has been examined in this study. The zeta-potential of serpentine, magnesite and magnetite was measured with and without dodecylamine as surfactant. The interaction energies between the particles were then calculated. Without the surfactant, no magnetic coating was obtained despite the favourable predictions for narrow pH ranges. When surfactant is added in suspensions of separate minerals, the serpentine particles obtain a magnetic coating strongly attached to the surface in the range 6 < pH < 11 while the magnesite particles obtained a weak and limited extension coating only for pH > 9. The experimental results are in excellent agreement with the theoretically predicted results for serpentine and in fairly good agreement for magnesite. When artificial mixtures of serpentine and magnesite were used, the metallurgical results are slightly different from the results on separate minerals. en
heal.publisher Elsevier Science Publishers B.V., Amsterdam, Netherlands en
heal.journalName Colloids and Surfaces A: Physicochemical and Engineering Aspects en
dc.identifier.doi 10.1016/S0927-7757(98)00562-7 en
dc.identifier.isi ISI:000079545100072 en
dc.identifier.volume 149 en
dc.identifier.issue 1-3 en
dc.identifier.spage 585 en
dc.identifier.epage 593 en


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