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THE POSSIBILITY OF SCHEELITE PROCESSING BY FLOTATION FROM OCHTINA

Klaudia Sandorova, Michal Marcin, Michal Matasovsky, Branislav Loch, Barbora Roth

First published: 2017-06-20https://doi.org/10.5593/sgem2017/11/s04.143View metrics

Abstract

This study is focused on the flotation of scheelite (CaWO4) ore with a sample from OchtinпїЅ, Slovakia. Scheelite as an important tungsten - bearing mineral is often nowadays treated mainly by froth flotation. Such a treatment of scheelite mineral includes crushing, grinding and sorting, followed by gravity separation which is a very significant process for obtaining marketable grade mineral concentrates. A significant step is flotation processing which is based on the difference in chemical and physical properties of different mineral surfaces intended for separation. This is essentially a difference in surface tension of the surface of the materials. Simply put some of the materials are less wettable than others. The separation of minerals by flotation has been proven effective when particles to be floated can be made selectively hydrophobic. The hydrophobicity is induced by the adsorption of collectors except in a few cases of collectorless flotation of hydrophobic minerals or complex sulfide ores. Hydrophobization of the scheelite surface was achieved using benzohydroxamic acid (BHA) as a collector. Lead nitrate was used to improve the efficiency of the adsorption of the collector on scheelite surface.

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Publication details

Title
THE POSSIBILITY OF SCHEELITE PROCESSING BY FLOTATION FROM OCHTINA
Authors
Klaudia Sandorova, Michal Marcin, Michal Matasovsky, Branislav Loch, Barbora Roth
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
1119-1124
SWS Citekey
Sandorova2017411191124
ISSN
1314-2704
ISBN
978-619-7105-98-8
Language
en
Publication type
Conference Paper
Keywords
scheelitetungstenseparationfroth flotation
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