A typical plant would have an HGMS with a filter diameter of about 2 m and capacity up to 20 t/hr [6]. Research and development to use superconducting magnets more effectively in kaolin refinement process, for example such process that was done in the united kingdom from the end of 1980s [7]. This involves the use of powerful magnets with field strengths ranging from 2 to 6 Tesla. The range ...