Magnetic separation

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Magnetic separation
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Principle of magnetic separation
Utilized feature magnetic susceptibility
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In vacuum
B0 ?0 H
?0 magnetic permeability of vacuum (4?107
Vs/(Am) H/m
H - magnetic field intensity (A/m) B0 - magnetic
induction in vacuum (Vs/m2 T)
In any medium (e.g. particle)
B ? H
B ?0 (H M) B0 ?0 M
particle input
vacuum imput
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Vector of magnetic induction B in a particle is
difefrent from that of in vacuum. Therefore
? (B B0)/B0 (? ?0)/? 0 ?0M/B0
? is the volumetric dimensionless magnetic
susceptibility
MATERIALS
?
- ?
paramagnetics
diamagnetics
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Ways of expressing magnetic susceptibility
?
?w ?/?
?M ?w M
volume (dimensionless)
mass (specific) (cm3/g)
molar (cm3/mol)
generally
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Classification of materials
M? H
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Influence of temperature
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Diamagnetics
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Paramagnetics
-true paramagnetics -antyferromagnetics -ferrimagn
etics -ferromagnetics
True paramagnetics
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Antyferromagnetyki
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Ferrimagnetyki
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Ferromagnetics
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dry separation drum separator
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Wet separation (drum separator)
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Magnetic separation
Induction type separator
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belt type separator
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cross-belt separator
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Supercoducting
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HGMS, peridical
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HGMS, continueous
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ISD