These HI Filters, available in a range of sizes with background fields up to 1 Tesla, are generally supplied as PLC controlled, fully automatic units and are used in many diverse processes. Advances in cryogenic technology have opened up the opportunity for a much simpler superconducting magnet construction which obviates the need for liquid cryogens and reduces the overall complexity and cost. The most widely used separators for dry mineral material are drums and roll type units. Using the latest high strength Rare Earth magnetic material Eriez RE Rolls have now all but replaced the electromagnetic dry separator Induced Magnetic Roll, which was expensive to run and suffered low throughputs. The RE roll separators offer higher field strengths for the extraction of weakly paramagnetic particles and are available in three sizes to cater for all throughput requirements.
All units are modular and are fitted with a quick-change belt facility.
Wet Drum Separators for large scale recovery of magnetite or ferrosilicon in dense media plants and for iron ore benefication. Induced Roll Separators for concentration of finely divided paramagnetic ores and for purification of non magnetic minerals use powerful electro magnets to induce a magnetic field in rolls. Disc Separators are used to selectively separate a mixture of minerals of varying magnetic susceptibility - a 3 disc separator can extract up to 7 products in one pass. Particles are captured on a matrix arrangement in a rotating carousel which passes between the poles of a powerful electro magnet. Magnetic Filters can extract feebly magnetic particles from a liquid throughput, these can utilise either permanent or electro magnets.