... separating effeciency 2.Guarantee: 1 year 3.Separating weak magnetic material Features:Magnetic rolls available in 75 and 300mm diameters with widths ... up to 1000mm and magnetic field 13,000 Gauss. A 1 horsepower, variable speed ... , such as the beneficiation of abrasive, refractory and ceramic raw material (i.e., alumina, silica, carbide, magnesite, quartzite, etc), ...