The sorting speed of electromagnetic dry powder magnetic separator is an
important parameter that affects its sorting effect and efficiency. Adjusting
the sorting speed can optimize the sorting accuracy and processing capacity. The
adjustment of sorting speed involves multiple aspects, including electromagnetic
field strength, drum speed, material feeding speed, etc. The following is a
detailed explanation on how to adjust the sorting speed of the electromagnetic
dry powder magnetic separator:
1. Adjustment of electromagnetic field strength
-The influence of electromagnetic field intensity on sorting speed: The
electromagnetic dry powder magnetic separator separates magnetic particles and
non-magnetic particles in the material through the magnetic force generated by
the electromagnetic field. The stronger the magnetic field strength, the
stronger the attraction to magnetic particles, and the faster the sorting speed.
However, excessive magnetic field strength may cause magnetic particles to be
excessively attracted, thereby reducing sorting accuracy.
-How to adjust: The strength of the electromagnetic field is usually
determined by the current of the electromagnet. By adjusting the current in the
control system, the magnetic field strength can be increased or decreased,
thereby affecting the sorting speed. When dealing with materials with strong
magnetism, the magnetic field strength can be appropriately increased to
accelerate the sorting speed; When dealing with weak magnetic or fine particle
materials, reducing the magnetic field strength can improve the sorting
accuracy.
2. Adjustment of drum speed
-The influence of drum speed on sorting speed: The drum of an electromagnetic
dry powder magnetic separator is used to separate animal materials through a
magnetic field. The drum speed directly affects the processing speed and sorting
time of materials. Excessive rotation speed can result in short residence time
of materials in the magnetic field and insufficient sorting; If the speed is too
slow, it may reduce production efficiency.
-How to adjust: The drum speed is usually controlled by a frequency converter
or a speed regulating motor. According to the material characteristics and
production requirements, the speed of the drum can be adjusted. Generally
speaking, when it is necessary to increase production capacity, increasing the
rotational speed appropriately can accelerate the passage speed of materials;
When improving sorting accuracy is required, reducing the rotational speed can
prolong the residence time of materials in the magnetic field, ensuring
sufficient sorting.
3. Adjustment of material feeding speed
-The influence of feed speed on sorting speed: The feed speed determines the
amount of material entering the magnetic separator per unit time. Excessive
feeding speed can cause materials to accumulate in the sorting area, affecting
the sorting efficiency; If the feeding speed is too slow, it may reduce the
processing efficiency of the equipment.
-How to adjust: The feeding speed can be adjusted by controlling the
operating speed of the feeding device (such as a vibrating feeder or a screw
feeder). In order to optimize the sorting speed, the feeding speed should be
matched with the drum speed and magnetic field strength to avoid excessive
material accumulation or too fast flow rate. In general, when adjusting the
feeding speed, it is necessary to set it reasonably based on factors such as
material particle size and magnetic strength to achieve the best sorting
effect.
4. Adjustment of material particle size
-The influence of material particle size on sorting speed: The particle size
of materials also affects sorting speed. Finer particles have a longer residence
time in a magnetic field and a relatively slower sorting speed; Larger particles
are more affected by magnetic force and have a faster sorting speed. Therefore,
the uniformity of material particle size directly affects the stability of
sorting speed.
-How to adjust: Before sorting, particle size control and pretreatment of
materials can be carried out, and the particle size of materials can be
controlled within an appropriate range through screening or grinding equipment.
This can ensure that the material passes evenly during the magnetic separation
process, avoiding uneven particle size that leads to inconsistent sorting speed
and effectiveness.
5. Adjustment of sorting area
-The setting of sorting area: The size and shape of the sorting area of the
electromagnetic dry powder magnetic separator (i.e. the area where the material
comes into contact with the magnetic field) also affect the sorting speed. If
the sorting area is large and the material stays in the magnetic field for a
longer time, the sorting effect will be better; If the sorting area is small,
the material passes through quickly, but the sorting may not be thorough.
-How to adjust: The size and shape of the sorting area can be adjusted by
adjusting the distance between the drum and the electromagnet, and changing the
coverage area of the magnetic field. In general, if it is necessary to increase
the sorting speed, the sorting area can be reduced; When it is necessary to
improve sorting accuracy, the sorting area can be increased.
6. Adjustment of auxiliary equipment
-The function of vibration device: Some electromagnetic dry powder separators
are equipped with vibration devices to assist in the uniform distribution of
materials and the passage of magnetic fields. The frequency and amplitude of the
vibration device will affect the movement speed of the material in the magnetic
field, thereby affecting the sorting speed.
-How to adjust: Based on the characteristics of the material, the frequency
and amplitude of the vibration device can be adjusted appropriately to ensure
that the material enters the sorting area evenly and avoid excessive
concentration or uneven flow rate. At the same time, the vibration frequency can
also affect the dispersion of materials, thereby affecting the sorting speed and
effectiveness.
7. Adjustment of magnetic field gradient
-The function of magnetic field gradient: Magnetic field gradient refers to
the rate of change of magnetic field strength in space. High magnetic field
gradient can generate greater magnetic force and quickly separate magnetic
particles; A low magnetic field gradient is beneficial for the separation of
weakly magnetic particles.
-How to adjust: By changing the magnetic pole spacing and adjusting the
distribution of the magnetic field, the magnetic field gradient can be adjusted.
Usually, when it is necessary to quickly separate strong magnetic materials,
increasing the magnetic field gradient can improve the sorting speed; When
dealing with weak magnetic or fine particle materials, reducing the magnetic
field gradient can help improve the sorting efficiency.
summary
The sorting speed of electromagnetic dry powder magnetic separator can be
optimized by adjusting multiple parameters, including electromagnetic field
strength, drum speed, feed speed, material particle size, sorting area,
auxiliary equipment (such as vibration device), and adjustment of magnetic field
gradient. The adjustment of these parameters needs to be comprehensively
considered based on specific production requirements, material characteristics,
and sorting accuracy requirements. By reasonable adjustment and matching,
production efficiency can be improved and equipment performance can be optimized
while ensuring sorting accuracy.