Abstract: A rotary magnetic separator is disclosed which includes a ferromagnetic rotor provided with a plurality of arcuate separating chambers supported at its periphery. Each separating chamber comprises an inlet for feed suspension in its bottom coupled to a pump by way of a flexible pipe, and an outlet for feed suspension in its top, there being a fluid permeable and magnetizable packing material between the inlet and outlet. Two electromagnet poles are magnetically coupled to the rotor which serves as a further pole. The rotor can be turned by a motor so as to move certain separating chambers into the vicinity of the electromagnet poles. Feed suspension can then be supplied to these separating chambers and magnetizable particles from the feed suspension may become entrained in the packing material. Subsequently the rotor can be turned back to its original position and these separating chambers can be flushed out with clean water.