mineral processing technology and mineral processing equipment

In beneficiation plant like hematite , Separating paramagnetic or weakly magnetic particles requires a higher flux density. This higher density is achieved by designing electromagnetic circuitry that can generate a magnetic force of up to 2 tesla. For example, in a silica sand processing plant , these separators are used to remove weakly magnetic iron-bearing particles. Induced-roll Magnetic Separator Induced-roll dry magnetic separators are widely used to remove trace impurities of paramagnetic substances from feedstocks such as quartz, feldspar, and calcite. The machine contains laminated rolls of alternating magnetic and nonmagnetic discs. A magnetic flux on the order of 2 tesla is obtained, and very high gradients are obtained where the flux converges on the sharp edges of the magnetic laminations. A thin stream of granular material is fed to the top of the first roll. The magnetic particles are attracted to the roll and are deflected out of their natural trajectory (Figure 1...