The hydrophobic surface state of talc as influenced by aluminum substitution in the tetrahedral layer.
Aluminum substitution
Bubble attachment
Hydrophobicity
Molecular dynamics simulation (MDS)
Talc
X-ray photoelectron spectroscopy (XPS)
Journal
Journal of colloid and interface science
ISSN: 1095-7103
Titre abrégé: J Colloid Interface Sci
Pays: United States
ID NLM: 0043125
Informations de publication
Date de publication:
15 Feb 2019
15 Feb 2019
Historique:
received:
10
09
2018
revised:
24
10
2018
accepted:
26
10
2018
pubmed:
12
11
2018
medline:
12
11
2018
entrez:
12
11
2018
Statut:
ppublish
Résumé
Talc is both an important industrial mineral product recovered by flotation, and also in other cases, a gangue mineral of concern in the flotation of certain sulfide ores, such as the PGM ores from South Africa and from the United States. The talc face surface is naturally hydrophobic with a water sessile drop contact angle of nearly 80°, which accounts for its flotation recovery in one case, and its contamination of sulfide mineral concentrates in other instances. Due to the presence of impurities in the talc structure the surface properties change. One such effect is the presence of aluminum, which can replace silicon in the silica tetrahedral layer of the talc structure. This results in a charge imbalance on the face surface because Si
Identifiants
pubmed: 30415178
pii: S0021-9797(18)31282-7
doi: 10.1016/j.jcis.2018.10.085
pii:
doi:
Types de publication
Journal Article
Langues
eng
Pagination
737-748Informations de copyright
Copyright © 2018 Elsevier Inc. All rights reserved.