Magnetic separation

Magnetic separation is one of the basic methods used in concentrating. It is used when separating minerals with different magnetic properties. The separation method is usually used in iron ore beneficiation, but it is also often used as part of different types of combination processes.

Both permanent magnet separation and electromagnetic separation technology have progressed a great deal lately. The development of neodymium magnets used in permanent magnet applications, as well as super conducting and other strong magnet separators in electromagnetic applications, has opened up new application opportunities for the method.

GTK’s Mineral Technology Unit has versatile magnetic separation equipment for studies as well as experience in beneficiation of different kinds of ores and other samples, batch laboratory tests, and continuous factory tests.

We have a Dings-Davis Tube separator (DDT) for basic studies, a Frantz separator for testing mineralogical samples, a Satmagan magnetite analyser for defining properties of samples, a MSB device for measuring susceptibility, and a Bell gauss gauge for measuring the fields of separators.

For laboratory studies, we have conventional Sala wet weak magnetic separators and dry neodymium belt separators whose maximum field intensity is approximately 1 T.

We perform HGMS separation with a Sala separator whose maximum field intensity is 2 T.

At the test factory, we have conventional Sala wet weak magnetic drums, and our latest available separator type is a continuously operating SLon high gradient separator whose maximum field intensity is approximately 1 T.

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