Magnet material generally refers to the magnetic pressings or castings used to develop the magnetic field within the separator. Once the magnetic system is assembled, it is encased within stainless steel to protect the magnet material from damage or from wear associated with product flow.
The term, Rare Earth, is a misnomer. A rare earth magnet derives its name not because it is rare, nor because it is earth. It is named “Rare Earth” because part of its make-up is one of the Lanthanide elements of the Periodic Table between 57 and 71. There are 14 elements referred to as “The Rare Earth Elements.” Samarium Cobalt was the first such material used in the early 1980s. The next material on the market was Neodymium Iron Boron, called “Rare Earth” because Neodymium, like Samarium, is one of the Lanthanides. Today, Rare Earth magnetic circuits produce a magnet force more than 10 times that of ceramic magnetic circuits.
MHD Rare Earth Material develops an extremely high surface force to enable the magnetic circuit to remove very fine or weakly magnetic contamination such as rust, scale or even work-hardened stainless steel from a product flow. High strength Rare Earth Separators are extensively used by metal pretreatment processors in the automobile manufacturing industry requiring the highest levels of product purity.