Development of the superconducting magnet system for industrial high gradient magnetic separator

To promote the effective development of superconducting magnetic separation technology and its practical industrial application for kaolin clay beneficiation, an industrial prototype superconducting magnetic separator is being developed. For this reciprocating-type separator with a horizontal axis, a superconducting magnet system consisting of a 0.5-m warm bore, a 0.8-m-long, 4-T central field high-current-density superconducting solenoid, a horizontal dewar, and a 10-L/h close-loop helium liquefier is under development. The main considerations in design and experience in development and construction are summarized.