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Hydrophobic magnetite seeding of hematite ultrafines in high gradient magnetic separation
YKI – Ytkemiska institutet.
1993 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 6, p. 537-546Article in journal (Refereed)
Abstract [en]

The application of hydrophobic magnetite seeding to concentrate hematite ultrafines (<10 µm) in slimes using a high gradient magnetic separator (HGMS) with coarse expanded metal matrices was investigated. It was shown that the selective aggregation at high shear rate of the seeded hematite particles (produced by surface treatment with sodium oleate and colloidal magnetite) could significantly enhance the HGMS capture of hematite ultrafines. The mechanism of selective aggregation was discussed in terms of the combination of hydrophobic and magnetic interactions.

Place, publisher, year, edition, pages
1993. Vol. 6, p. 537-546
Keywords [en]
Magnetite seeding, HGMS, Magnetic separation, Hydrophobic and magnetic aggregation, Iron oxide mineral, Magnetite, Hematite, Ultrafines
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27319OAI: oai:DiVA.org:ri-27319DiVA, id: diva2:1054323
Note
A822Available from: 2016-12-08 Created: 2016-12-08 Last updated: 2017-11-29Bibliographically approved

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