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Fine Particle Classification and Dewatering of Tailing Using Hydrocyclone

습식사이클론을 이용한 광물찌꺼기의 정밀분급과 탈수

  • Kim, Jonggeol (Department of Energy and Resources Engineering, Korea Maritime and Ocean University) ;
  • Yoo, Kyoungkeun (Department of Energy and Resources Engineering, Korea Maritime and Ocean University) ;
  • Choe, Hongil (Institute of Mine Reclamation Technology, Mine Reclamation Corporation) ;
  • Choi, Uikyu (Institute of Mine Reclamation Technology, Mine Reclamation Corporation) ;
  • Park, Jayhyun (Institute of Mine Reclamation Technology, Mine Reclamation Corporation) ;
  • Alorro, Richard Diaz (Department of Metallurgical and Mineral Engineeing, Curtin University)
  • 김종걸 (한국해양대학교 에너지자원공학과) ;
  • 유경근 (한국해양대학교 에너지자원공학과) ;
  • 최홍일 (한국광해관리공단 광해기술연구소) ;
  • 최의규 (한국광해관리공단 광해기술연구소) ;
  • 박제현 (한국광해관리공단 광해기술연구소) ;
  • Received : 2015.06.29
  • Accepted : 2015.07.27
  • Published : 2015.08.31

Abstract

Fine particle classification was performed using products obtained from primary classification process after flotation for efficient application of tailing. The cut size increased with decreasing input pressure from 0.1 MPa to 0.3 MPa and increasing pulp density from 5% to 15% using 2-inch hydrocyclone. The median sizes of overflow and underflow were $6.56{\mu}m$ and $55.45{\mu}m$, respectively at 0.3 MPa with 5% pulp density. The imperfection became closed to ideal separation with increasing the pulp density and decreasing the input pressure. The water content decreased with increasing the pulp density, but the effect of input pressure could be ignored. The water content of underflow was 27.9% at 0.3 MPa with 15% pulp density.

광물찌꺼기의 효율적인 활용을 위하여 부유선별공정에서 배출되어 1차 분급된 시료를 대상으로 정밀분급을 실시하였다. 0.1 MPa - 0.3 MPa의 주입압력(공급유량)과 5% - 15%의 광액농도 조건에서 2인치 습식사이클론을 이용하여 분급시험을 진행한 결과, 주입압력 (공급유량)이 감소할수록 광액농도가 증가할수록 분리입도는 증가하였다. 광액농도 5%와 주입압력 0.3 MPa의 조건에서 overflow와 underflow의 평균입도는 각각 $6.56{\mu}m$$55.45{\mu}m$를 나타내었다. 분급효율은 광액농도를 증가시키거나 주입압력을 감소시킬수록 이상적인 분급효과에 근접하였다. 광액농도가 증가할수록 탈수효과는 증가하며, 주입압력에 따른 변화는 크지 않았다. 광액농도 15 %와 주입압력 0.3 MPa의 조건에서 underflow의 함수율은 27.9%로 나타났다.

Keywords

References

  1. Wills, B. A. and Napier-Munn, T. J., 2006: Wills' Mineral Processing Technology, Seventh edition, pp. 214, 400-408, Butterworth-Heinemann publication, Amsterdam, Netherlands.
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  3. MIRECO, 2013: The Development of Advanced Recycling Technologies for Tailing; Final Report, pp. 1-2.
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  5. Bradley, D., 1965: The Hydrocyclone, pp. 41-62, Pergamon Press, London, UK.

Cited by

  1. Fine Particle Classification and Dewatering of Construction Waste Slurry Using Hydrocyclone vol.52, pp.6, 2015, https://doi.org/10.12972/ksmer.2015.52.6.627
  2. Study on the Classification of Fine Particles by Using a Multi-step Hydrocyclone for the Recycling of Waste Concrete Slurry vol.56, pp.1, 2019, https://doi.org/10.32390/ksmer.2019.56.1.073