Non-HF collectorless flotation of quartz. (15th March 2019)

• Record Type: Journal Article
• Authors: Larsen, Erik; Kowalczuk, Przemyslaw B.; Kleiv, Rolf Arne
• Is Part Of: Minerals engineering. Volume 133(2019)
• Page Start: 115
• Page End: 118
• Publication Date: 2019-03-15
• Subjects: Flotation -- Quartz -- Sulphuric acid -- Sodium fluoride -- Contact angle; Mines and mineral resources -- Periodicals; Ressources minérales -- Périodiques; Mines and mineral resources; Periodicals; Electronic journals; 622
• DOI: 10.1016/j.mineng.2019.01.014
• Languages: English
• ISSNs: 0892-6875

Abstract

Highlights: Quartz floats in solutions of an inorganic acid with NaF and the frother Brij58. Lower F concentration and F/H ratio with different F and H sources, compared to HF. Quartz contact angle increases with H2 SO4 /H2 SO4 + NaF, but not with NaF or Brij58. Abstract: Pure mineral flotation experiments have demonstrated that quartz can be floated without a collector, in solutions containing an inorganic acid (e.g. H2 SO4 ) and sodium fluoride (NaF). Excellent quartz recoveries, similar to that of previous investigations with aqueous solutions containing hydrofluoric acid (HF), have been achieved with lower fluorine concentrations and a more optimal F/H ratio when combining separate sources of H and F instead of using only HF.