After the magnetic separation is PTMS Electromagnetic Separator fine screening operation. If there is no influence of magnetic agglomeration, the product under the fine screen should have fine particle size and higher grade than the product on the screen, because the gangue and connected body particles such as quartz are often coarser than the magnetite particles and the density is smaller. At this time, the fine screen plays both a grading role and a sorting role.
However, if the magnetite particles are agglomerated because of remanence, they can not pass through the screen but enter the product on the screen, so that the screening efficiency of the fine screen is reduced, and the sorting effect is worse. It is necessary to demagnetize the fine sieve feed ore. Magnetic separation is followed by grinding classification. For example, PTMS Electromagnetic Separator is used for grinding grading after preconditioning or for re-grinding grading of magnetically separated coarse concentrate in a stage grinding process.
If there is more residual magnetic in the ore or the magnetic coarse concentrate after separation by magnetic pulley, there is still magnetic agglomeration phenomenon in the PTMS Electromagnetic Separator after grinding by the mill. The magnetic particles are generally loose and contain more water, and the magnetic particles will overflow when hydraulic classification is adopted. When graded with a screen, magnetic particles enter the product on the screen.
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