Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Nano-entities for surface modification of minerals: Implications for flotation
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8909-3554
2017 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Adsorption of nano-entities (nano-cellulose and nano-chitin) on quartz and magnetite was investigated as a function of pH with measurement of Zeta potential as a tool. The results show strong adsorption of the nano-entities on both minerals, leading to charge reversal. However, the adsorption appears to be largely non-preferential over the concentration and pH ranges investigated.

Micro-flotation results show that both nano-entities float quartz to the same extent, and that the same is true for magnetite. However, the amount floated is higher for quartz. There is also an indication that Chitin at pH 8 has some preference for quartz over magnetite.

Mini-flotation results for mineral mixtures at pH 8 with Chitin and flotation reagents show that Chitin can selectively float quartz for the given conditions, but the recovery is low. If oleate is added, the selectivity is lost. This means that the nano-entity is probably not a cationic activator, rather it induces some little hydrophobicity to the quartz surface on its own.

Place, publisher, year, edition, pages
2017.
National Category
Chemical Process Engineering Other Engineering and Technologies not elsewhere specified Metallurgy and Metallic Materials Bio Materials
Research subject
Mineral Processing; Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-66816OAI: oai:DiVA.org:ltu-66816DiVA: diva2:1161062
Conference
Flotation'17, Cape Town, South Africa, November 13-16, 2017
Funder
VINNOVA, 2015-01300
Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2017-12-05Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Pålsson, BertilKarlkvist, TommyMathew, Aji P.
By organisation
Minerals and Metallurgical EngineeringMaterial Science
Chemical Process EngineeringOther Engineering and Technologies not elsewhere specifiedMetallurgy and Metallic MaterialsBio Materials

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 11 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf