Show simple item record

dc.contributor.authorZhang, J.
dc.contributor.authorZhang, W.
dc.date.accessioned2022-10-24T23:51:13Z
dc.date.available2022-10-24T23:51:13Z
dc.date.issued2022
dc.identifier.citationZhang, J., & Zhang, W. (2022). AFM Image Analysis of the Adsorption of Xanthate and Dialkyl Dithiophosphate on Chalcocite. Minerals, 12(8).
dc.identifier.issn2075-163X
dc.identifier.doi10.3390/min12081018
dc.identifier.urihttp://hdl.handle.net/10150/666473
dc.description.abstractAtomic force microscopy (AFM) has been applied to study the adsorption morphology of various collectors, i.e., potassium ethyl xanthate (KEX) and potassium amyl xanthate (PAX) and Cytec Aerofloat 238 (sodium dibutyl dithiophosphate), on chalcocite in situ in aqueous solutions. The AFM images show that all these collectors adsorb strongly on chalcocite. Xanthate adsorbs mainly in the form of insoluble cuprous xanthate (CuX), which binds strongly with the mineral surface without being removed by flushing with ethanol alcohol. This xanthate/chalcocite adsorption mechanism is very similar to the one obtained with the xanthate/bornite system; while it is different from the one of the xanthate/chalcopyrite systems, for which oily dixanthogen is the main adsorption product on chalcopyrite surface. On the other hand, dibutyl dithiophosphate adsorbs on chalcocite in the form of hydrophobic patches, which can be removed by rinsing with ethanol alcohol. AFM images show that the adsorption of collectors increases with increasing adsorption time and collectors’ concentration. In addition, increasing the solution pH to 10 does not prevent the adsorption of xanthate and Aerofloat 238 on chalcocite and the result is in line with the fact that chalcocite floats well in a wide pH range up to 12 with xanthate and dialkyl dithiophosphate being used as collectors. The blending collectors study shows that xanthate and dialkyl dithiophosphate can co-adsorb with both insoluble cuprous xanthate and oily Cu(DTP)2 (Cu dibutyl dithiophosphate) on a chalcocite surface. The present study helps to clarify the flotation mechanism of chalcocite in industry practice using xanthate and dialkyl dithiophosphate as collectors. © 2022 by the authors.
dc.language.isoen
dc.publisherMDPI
dc.rightsCopyright © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAFM
dc.subjectchalcocite
dc.subjectcuprous xanthate
dc.subjectdialkyl dithiophosphate
dc.subjectflotation
dc.subjectxanthate
dc.titleAFM Image Analysis of the Adsorption of Xanthate and Dialkyl Dithiophosphate on Chalcocite
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Mining and Geological Engineering, University of Arizona
dc.identifier.journalMinerals
dc.description.noteOpen access journal
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleMinerals
refterms.dateFOA2022-10-24T23:51:13Z


Files in this item

Thumbnail
Name:
minerals-12-01018-v2.pdf
Size:
78.39Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

Copyright © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as Copyright © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).