| Affect of Pulsation |
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No Pulsation: When there is no pulsation, the slurry flows only in one direction and particles accumulate only on the upper side of the matrix wires and quickly trap non-magnetic particles. This leads to a swift reduction in the purity or grade of the magnetic product. |
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Weak Pulsation: As some pulsating velocity is introduced, the slurry direction is reversed and particles begin to accumulate on both sides of the matrix wire. Non-magnetic particles are trapped less and less as the velocity increases. |
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Moderate Pulsation: Increasing the velocity even more allows for magnetic particles to more evenly accumulate on both sides of the matrix wire and fewer non-magnetic particles become trapped. |
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Strong Pulsation: When the pulsating velocity is very high, particles are almost equally accumulated on both sides of the matrix wire and very few non-magnetic particles are entrapped. However, the attraction power of the matrix wire drops dramatically as competing forces become too large. Under this condition, although the purity of magnetic product increases, its converse effect is a decrease in magnetic material recovery. |
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 Magnetic Particles  Non-Magnetic Particles
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Pulsating mechanism and vertical ring configuration
The pulsating mechanism drives the slurry up and down, keeping particles in the separating zone in a constantly loose state. The pulsing fluid enables the matrix to more easily capture magnetic particles and non-magnetic particles to flow easily through the matrix into the tailings.
The working ring of the SLon rotates vertically, rather than horizontally. This configuration allows for flushing of magnetic particles in the opposite direction of the feed so that coarse particles can be washed away without having to pass through the entire depth of the matrix. Additionally, the flush zone is designed to have less stray magnetic field and so reduce any residual grip on the magnetic particles.
The pulsation of the slurry while the matrix is magnetized and the opposite flushing allowed by the vertical configuration while out of the magnetic zone combine to purify magnetic product whilst preventing matrix plugging. These unique features help the SLon achieve a higher ratio of beneficiation, higher efficiency, and considerable flexibility.
Filamentary matrix elements
The SLon® matrix is constructed of filamentary elements formed in rods of an extraordinary quality magnetic steel, providing extremely high magnetization. The rods are mounted in a fixed, equidistant pattern; greatly reducing the risk for entrapment of particles, especially when compared to randomly positioned filaments or expanded metal sheets. By inserting the filamentary elements perpendicular to the applied magnetic field, an optimum magnetic force is achieved. The unique matrix maximizes the physical combination of high background magnetic field and the generated high magnetic flux gradient.