Increasingly stringent product specifications require more efficient separation methods, and Eriez claims its Rare Earth (RE) Roll Separators provide peak separation efficiency to ensure exceptional product purity.

“Our new and stronger permanent magnetic separators provide a more efficient alternative for handling a wide variety of materials that do not respond well to traditional methods of separation,” said Dave Heubel, director of North American sales. “Our RE Roll Separators bring together extraordinary magnetic strength and superior product design, enabling this equipment to meet even the toughest customer challenges. These separators are essential in response to new advances in materials and specifications. Increasingly, there is a demand for higher purity feedstocks.”

RE Rolls are constructed with neodymium-boron-iron rare earth permanent magnets that are claimed to offer at least 10 times the attractive force of conventional magnets. The high-gradient magnetic circuit includes a variety of proprietary items designed to produce a magnetic field in excess of 21,000 gauss. These highly magnetic rolls are capable of recovering weakly magnetic particles, and will handle feeds from 0.5-in. (13 mm) to very fine materials.

Eriez RE Rolls are available in 3-, 4- and 6-in. (76. 102 and 152-mm) diameter rolls. Roll widths range from 5 to 60 in. (127 to 1,524 mm). A unique cantilever design allows quick belt replacement, requiring only one operator. The standard belting is Teflon-coated, graphite-filled Kevlar with thicknesses of five and 10 mils.

The units are available in single-, double- and triple-stage versions with either non-magnetic or magnetic-rerun.