ABSTRACT
Magnetic separators are classified in terms of the difference of the separation mechanism. In a narrow sense, magnetic separation is a separation technique whose goal is to concentrate a magnetic material, to remove magnetic impurity, or to extract valuable magnetic materials. The main application of low-intensity magnetic separators is either removal of strongly magnetic impurities of tramp iron or concentration of a strongly magnetic valuable component. The coupled-pole dry separator, high-gauss separator, Dings-induced roll separator, and Wetherilll–Rowand separator belong to the High-Intensity Magnetic Separation type. The New York drum separator is a Yashima magnetic separator with many steel balls on the drum surface. The high-gradient magnetic separator has been known since 1968 when the device was first installed at a Georgia kaolin plant to remove weakly magnetic particles less than 2 µm in size from clay. Eddy-current separation is used for the recovery of nonferrous metals from material mixtures whose magnetic fractions are removed by a magnetic separator.
