ABSTRACT
Many kinds of forces are used to separate or fi lter materials of different quality and size. Mineral processing especially includes the separation of solids, recovery of valuable solids from waste materials, and water or air purifi cation. Materials have electric and magnetic properties; therefore, electromagnetic fi elds are employed to separate solids with different electric and magnetic properties. Consequently, for effi cient separation it is important to increase the electromagnetic forces and decrease the interaction forces between different solid particles. Here various magnetic separation methods and unit operations to separate particles by virtue of differences in their magnetic properties are described.
