Forming superhydrophobic surfaces for mineral separation at water pulsating jigs

CAMALAN M., AROL A. İ.

Colloids and Surfaces A: Physicochemical and Engineering Aspects, cilt.651, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 651
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.colsurfa.2022.129726
  • Dergi Adı: Colloids and Surfaces A: Physicochemical and Engineering Aspects
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, INSPEC
  • Anahtar Kelimeler: Superhydrophobic, Spray coating, Thermal drying, Drag reduction, Jigging, ALUMINUM-ALLOY SURFACE, DRAG REDUCTION, SETTLING VELOCITIES, SLIP, COATINGS, FABRICATION, LAYER, BENEFICIATION, RESISTANCE, FLOTATION
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

© 2022 Elsevier B.V.Superhydrophobic particles experience less drag force at settling in water. This is because these particles possess air layers around their surfaces, which induce slip at the air-water interface. This study tests the hypothesis that the minerals with superhydrophobic surfaces can be separated well at water pulsating jigs due to the associated drag reduction. For that purpose, superhydrophobic mineral surfaces were generated by spray coating the reagents on particles, and subsequent drying of particles. Then, (i) the settling behavior and (ii) the jigging products of the spray-coated and uncoated particles were evaluated. Results provide strong evidence for the drag-reduction-related separation of spray-coated particles. Spray coating without drying can also promote separation. Selective coating of minerals is effective at jigging with slow water pulsation. However, excessive coatings will hinder the separation.