Method for adjusting the magnetic field strength of quartz sand magnetic
separator
The magnetic field strength of a quartz sand magnetic separator directly
affects the sorting effect, and can be adjusted according to the magnetic
differences of the material, processing capacity, and sorting requirements. The
following are specific adjustment methods:
1. Adjust the excitation current (applicable to electromagnetic magnetic
separators)
Principle: The magnetic field strength of an electromagnetic magnetic
separator is directly proportional to the excitation coil current.
Method: Adjust the current of the magnetic separator control system to change
the magnetic field strength. Increasing the current can increase the magnetic
field strength, while reducing the current can decrease the magnetic field
strength.
matters needing attention:
When adjusting, avoid exceeding the rated current range to prevent coil
overheating or damage.
It is necessary to adjust according to the characteristics of the material to
avoid excessive inclusion of non-magnetic particles due to a strong magnetic
field.
2. Adjust the magnetic pole spacing (applicable to some permanent magnet
separators)
Principle: The spacing between magnetic poles affects the distribution of
magnetic fields. The smaller the spacing, the more concentrated the magnetic
force, and the stronger the sorting effect.
Method: Some permanent magnet separators can change the magnetic field
strength by adjusting the magnetic pole position to adapt to different material
requirements.
matters needing attention:
When adjusting the magnetic poles, it is necessary to ensure uniform
distribution to avoid insufficient or excessive local magnetic force.
Only applicable to specific models of magnetic separators.
3. Replace or adjust the magnetic system (applicable to permanent magnet
separators)
Principle: The material and structure of the magnetic system determine the
magnetic field strength of the magnetic separator.
method:
Replacing high-performance magnetic materials such as neodymium iron boron
can enhance the magnetic field strength.
Increase the thickness of the magnetic block or optimize the arrangement of
the magnetic system to enhance the magnetic induction intensity.
matters needing attention:
Suitable for equipment modification or performance upgrade.
Replacing the magnetic block may involve higher costs.
4. Adjust the work gap
Principle: The magnetic field strength of the magnetic separator will vary
with the working gap (i.e. the distance between the magnetic separation drum and
the material layer).
Method: By adjusting the height of the conveyor belt or the position of the
magnetic separation drum appropriately, the material is placed in the optimal
magnetic field area.
matters needing attention:
Excessive work gap may lead to poor magnetic separation effect, while
insufficient gap may result in uneven separation.
When adjusting, it is necessary to ensure the stable operation of the
equipment to avoid material blockage or increased wear.
5. Control material thickness and uniformity
Principle: Excessive thickness of the material layer may cause uneven
magnetic force, affecting the sorting effect.
method:
By adjusting the feed rate, ensure that the material enters the magnetic
separation zone evenly.
Use reasonable feeding devices, such as vibrating feeders or homogenizers, to
ensure even distribution of materials.
matters needing attention:
Suitable for all types of magnetic separators.
Excessive or insufficient feed can affect the efficiency of magnetic
separation.
summarize
The magnetic field strength of a magnetic separator can be adjusted by
adjusting the excitation current, adjusting the magnetic pole spacing,
optimizing the magnetic system, replacing magnetic materials, adjusting the
working gap, and controlling the material thickness. The specific choice of
method should be comprehensively considered based on equipment type and
production requirements to achieve the best magnetic separation effect.