ReBCO split coil magnet for high gradient magnetic separation

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Diev, D.N.^1 ; Lepehin, V.M.^1 ; Makarenko, M.N.^1 ; Polyakov, A.V.^1 ; Shcherbakov, V.I.^1 ; Shutova, D.I.^1 ; Surin, M.I.^1

National Research Centre Kurchatov Institute, Kurchatov square 1, Moscow

123182, Russia^1

关键词: High gradient magnetic separation;    Industrial wastes recycling;    Magnetic system;    Overall design;    Rotary separators;    Soft magnetics;    Solid nitrogen;    Split magnets;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012105/pdf
DOI  :  10.1088/1757-899X/502/1/012105

来源: IOP

【 摘 要 】

High gradient magnetic separation is a promising method for ores enrichment and industrial wastes recycling. The potential of separators based on resistive and permanent magnets is limited by the value of magnetic field and operational costs. LTS magnetic systems require liquid helium and complicated cryogenics. HTS magnets operated in solid nitrogen at 50 K can be a possible solution. In this study, we discuss the conceptual design of an HTS rotary separator prototype with the horizontally oriented rotor axis. The scheme allows to organize a continuous ore processing. The split magnet system consists of two 2G HTS coils on a soft-magnetic yoke with 50 mm room temperature gap. The paper gives the overall design of the magnetic system and the related cryogenic, together with the magnetic fields and forces calculations. The preliminary test results of the ReBCO coil in liquid and sub-cooled nitrogen are also presented.