Optimizing the working parameters of electromagnetic dry powder magnetic
separators can significantly improve sorting efficiency, reduce energy
consumption, extend equipment service life, and improve product purity. Starting
from multiple key parameters, systematically explain optimization strategies and
methods:
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## ✅ 1、 Core working parameters of electromagnetic dry powder magnetic
separator
1. * * Magnetic Field Intensity**
2. * * Feed rate/feed quantity**
3. * * Material particle size range**
4. * * Drum or belt speed**
5. * * Current size (coil excitation current)**
6. * * Sorting gap (working area spacing)**
7. * * Working temperature and cooling conditions**
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## ✅ 2、 Suggestions for optimizing various parameters
### 1. ** Optimization of magnetic field strength**
-* * Objective * *: Improve the sorting ability of weak magnetic minerals or
fine impurities.
-* * Method * *:
-Adjust the excitation current (increasing the coil current can improve the
magnetic induction intensity);
-Replace the magnetic core material to increase the magnetic
permeability;
-Select appropriate magnetic field gradient based on material
characteristics: high-purity quartz sand is recommended to be ≥ 15000Gs;
-For fine-grained powders, improving magnetic field uniformity helps prevent
magnetic agglomeration.
### 2. ** Feed speed/feed quantity control**
-* * Objective * *: Ensure that materials are fully distributed and evenly
circulated in the magnetic separation zone to avoid material blockage.
-* * Method * *:
-Use a vibrating feeder for uniform feeding;
-Adjust the thickness of the material layer to ensure it is between
1-3mm;
-Reduce feed fluctuations and prevent a decrease in sorting accuracy due to
agglomeration or impact.
### 3. ** Material particle size control**
-* * Objective * *: Reduce the shielding effect between particles and improve
sorting accuracy.
-* * Method * *:
-Pre pulverize and screen the raw materials;
-Control the particle size distribution within the equipment adaptation range
(such as<0.5mm);
-Avoid mixing materials that affect the consistency of magnetic response.
### 4. ** Magnetic separation drum/belt speed adjustment**
-* * Objective * *: Adjust the residence time of magnetic substances in the
magnetic separation zone.
-* * Method * *:
-Reducing the rotational speed allows magnetic particles to be captured by
the magnetic force for a longer period of time;
-Increasing the rotational speed can reduce adhesion impurities and increase
processing capacity;
-The optimal setting should be determined based on experiments, generally
between 10-60 rpm (depending on the model).
### 5. ** Excitation current setting**
-Objective: To determine the magnetic field strength and gradient.
-* * Method * *:
-Set reasonable current values based on different materials;
-Avoid coil overheating or insulation aging caused by overcurrent;
-Generally, a variable current control power supply is used to achieve fine
current adjustment (such as adjustable from 0 to 100A).
### 6. ** Sorting gap adjustment**
-Objective: To affect the range of magnetic force and the passage of
materials through space.
-* * Method * *:
-The spacing between sorting areas should be appropriately reduced according
to the particle size of the material;
-Large particle size adapts to large spacing, small particle size adapts to
small spacing;
-Adjustable guide plate design is an optimization direction.
### 7. ** Working temperature and cooling system**
-Objective: To stabilize the magnetic field and prevent coil performance
degradation caused by temperature rise.
-* * Method * *:
-Check that the air or water cooling system is operating normally;
-Add a temperature control system to automatically adjust the operating
rhythm;
-Avoid prolonged full load operation without intermittent cooling.
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## ✅ 3、 Comprehensive optimization strategy
|Optimization objective | Suggestions for adjusting direction|
|----------------------|--------------------------------------------------------|
|Improve sorting accuracy | Increase magnetic field strength, reduce feed
rate, finely control particle size and gap|
|Improve processing capacity | Increase speed, increase feed volume, but
ensure no overload or blockage|
|Reduce energy consumption | Reduce excitation current, optimize speed and
feeding while meeting sorting accuracy|
|Reduce failure rate | Temperature control, speed regulation, installation of
monitoring system, implementation of preventive maintenance|
|Match different materials | Use adjustable parameter equipment, or set multi
gear magnetic separation program (program control)|
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## ✅ 4、 Suggested optimization tools and methods
- ✅ ** Design a test bench to test different parameter combinations * *;
- ✅ ** Introduce an automated control system (PLC+frequency
converter+magnetic induction sensor);
- ✅ ** Establish material database * *: Set corresponding parameter templates
for different raw ores;
- ✅ ** Combined with visual recognition or granularity monitoring system * *,
real-time feedback is provided to adjust parameters.
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## ✅ 5、 Summary
Optimizing the working parameters of an electromagnetic dry powder magnetic
separator is not a single factor adjustment, but a systematic engineering that
requires comprehensive consideration of factors such as magnetic field,
material, speed, and flow rate matching. Scientific optimization not only
improves production efficiency, but also extends equipment lifespan and reduces
operating costs.
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If you have specific models or operating parameters, I can help you customize
an optimization setting suggestion table or parameter debugging guidance table.
If needed, just tell me the device specifications or usage scenarios.