magnetic separation. overview material is separated based on magnetic susceptibility highly magnetic...
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Magnetic separation
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Magnetic separation
Overview• Material is separated based on magnetic
susceptibility• Highly magnetic material is removed using a
hand magnet• Weakly magnetic materials are separated by a
Frantz magnetic separator
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Magnetic separation
Hand Magnet• Spread the sample in a single
layer on a piece of paper• Cover the hand magnet in
weighing paper and pass over the sample
• Set the magnet of a second piece of weighing paper, hold the first down and remove the magnet
• Do not allow sample to contact the magnet directly as it is very difficult to remove.
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Magnetic separation
Frantz set up• The Frantz produces a strong magnetic field over a ramp
that holds magnetically susceptible material, while non magnetic material falls to a second ramp
• Set the angle of the ramp using the black rotating handle, typical angles are 10° - 25°
• Adjust the strength of the magnetic field using the current knob *do not exceed 1.3 A*
• Set the sample constrainers in place at the end of the ramps
Magnet current
Current Adjustment
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Magnetic Separation
Ramp angleAdjustment
(typically 10°-25°)
Sample Feed
Ramp
Low magneticsample collection
High magneticsample collection
Vibration control
Frantz Magnetic separator
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Magnetic separation
Frantz sample separation• Add sample to the feed shoe. • The rate of sample introduction is controlled by the
angle of the feed outlet shoot and the strength of feed vibration
• The speed at which material moved down the ramp is controlled by the strength of the chute vibration
• Set the vibrations such that material is able to separate on the ramp and is not introduced so fast as to cause clogs.
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Magnetic Separation
SampleIntroductionRamp
Vibration
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Magnetic separation
Franz clean up• Remove separated material and blow off all
surfaces with compressed air.