High gradient magnetic separation theory and applications

This paper discusses key technical and economical achievements which have extended the range of application of magnetic separation methods into the commercial processing of micron size feebly magnetic materials. Commercial application of magnetic methods in the cleaning of kaolin clay is reviewed and a discussion of magnetic separation principles is given with emphasis on identification and utilization of important process parameters. Possible future developments in magnetic processing of municipal and industrial wastewaters and of applications of magnetic methods to the preparation of clean fuels from coal are discussed.