Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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HTS high gradient magnetic separator prototype

  • Diev, D.N. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Lepehin, V.M. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Makarenko, M.N. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Polyakov, A.V. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Shcherbakov, V.I. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Shutova, D.I. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Surin, M.I. (National Research Centre "Kurchatov Institute", Moscow, Russian Federation) ;
  • Tagunov, E. Ya. (Magnetit Ltd)
  • Received : 2018.11.16
  • Accepted : 2018.12.12
  • Published : 2018.12.31
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Abstract

A high gradient magnetic (HGM) separator prototype with the $2^{nd}$ generation high temperature superconducting (2G HTS) magnetic system operated in sub-cooled nitrogen is presently under development at NRC "Kurchatov Institute" (Moscow, Russia). The main goal of the project is an attempt to shift away from the complicated liquid helium cryostats towards simple cryocooler-based nitrogen cryogenics as much more convenient for HGM separators industrial applications. Using of commercial HTS tapes allows to get a sufficient level of magnetic fields and extraction forces with low energy consumption. The expected operational parameters of the device are 1.2-1.5 T in the empty operational gap and up to 3 T on the ferromagnetic filters. In this paper we briefly describe the design of the HTS rotary separator prototype with the horizontally oriented rotor axis and propose different types of ferromagnetic filters intended for weakly magnetic ores enrichment.

Keywords

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Fig. 1. The design of the HTS HGM separator with a vertically rotating wheel.

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Fig. 2. The photos of the finished ReBCO coils and the parts of the cryostat under development.

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Fig. 3. Filter № 1 “plates with ledges” (the photo, the layout, and the magnetic flux density distribution in the 1.35 T background magnetic field).

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Fig. 4. Filter № 2 “rods” (the photo, the layout, and the magnetic flux density distribution in the 1.35 T background magnetic field).

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Fig. 5. Filter № 3 “angular plates” (the photo, the layout, and the magnetic flux density distribution in the 1.35 T background magnetic field).

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Fig. 6. Filter № 4 “plastic rods with a discrete ferromagnetic coating” (the photo, the layout, and the magnetic flux density distribution in the 1.35 T background magnetic field).

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Fig. 7. The changing of the magnetic extraction force parameter γ = B.grad B on the surface of a plastic rod covered with ferromagnetic particles (filter № 4) in the 1.5 T background magnetic field.

TABLE I DESIGN SPECIFICATIONS OF THE REBCO MAGNETIC SYSTEM.

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TABLE II THE PROPERTIES OF THE MODEL HGM FILTERS.

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