To evaluate the separation effect of electromagnetic dry powder magnetic
separators, comprehensive considerations should be made from the following
aspects:
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###1、 * * Sorting accuracy**
-Definition: The ability to identify and separate magnetic and non-magnetic
materials during the sorting process.
-Evaluation criteria:
-Magnetic material recovery rate (%): The proportion of successfully
separated and recovered magnetic materials.
-Non magnetic inclusion rate (%): The proportion of magnetic impurities
carried in the sorted non-magnetic product (the lower the better).
---
###2、 * * Sorting purity**
-Definition: The chemical purity or mineral composition purity of sorted
magnetic and non-magnetic products.
-Evaluation Method:
-Use analytical instruments such as XRF or ICP to detect impurities such as
Fe ₂ O3 and TiO ₂ in products.
-Compare the impurity concentration before and after sorting to determine the
removal efficiency.
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###3、 Capacity stability**
-Definition: The ability of a device to stably and continuously sort
materials within a unit of time.
-* * Metrics * *:
-The fluctuation range of t/h (ton/hour) production.
-The efficiency degradation after long-term operation.
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###4、 * * Adaptability**
-Definition: Compatibility of magnetic separators with different material
particle sizes, humidity, and impurity levels.
-* * Presentation * *:
-Can it effectively sort powders ranging from 0.1 to 3 mm;
-Is it greatly affected by the flowability and agglomeration of the
powder.
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###5、 Rationality of magnetic field strength and distribution**
-Importance: Determine whether weak magnetic impurities (such as hematite,
biotite, ilmenite, etc.) can be attracted.
-* * Detection method * *:
-Measure the maximum intensity of the magnetic field using a Gaussian
meter;
-Observe whether there are "magnetic blind spots" or "supersaturation zones"
in the selected area.
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###6、 Operating energy consumption ratio**
-Definition: Energy consumption per ton of material;
-* * Reference value * *: The energy consumption of high-quality equipment is
generally reasonable at 1-2 kWh/t;
-If the sorting efficiency is high but the energy consumption is huge, it is
also not conducive to long-term use.
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###7、 The compliance rate of product indicators after sorting**
-For high-purity powder materials such as quartz sand, potassium feldspar,
talc powder, etc., the industry usually sets target values such as:
- Fe₂O₃ < 0.01%
-Whiteness improvement ≥ 5%
-Granularity is not destroyed
The equipment should be able to stably achieve or approach these
indicators.
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###8、 Customer feedback in practical application examples**
-On site usage records and customer evaluations are also crucial:
-Can it continuously meet the production process requirements?
-Is there frequent material blockage, tripping, and unstable accuracy during
operation?
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###9、 Example of comprehensive rating for sorting effect**
|Evaluation Dimension | Standard Indicator | Excellent Level Standard|
|------------------|-----------------------------|--------------------------------|
|Recovery rate | ≥ 95% | Complete recovery of high magnetic materials|
|Impurity removal rate | ≥ 90% | Fe ₂ O ∝/TiO ₂ content reduced by over
90%|
|Stability | 24-hour continuous operation without fluctuation | Load
fluctuation < ± 5%|
|Energy consumption | ≤ 1.5 kWh/t | Low energy consumption and strong
economy|
|Intelligent level of control | Automated control, remote adjustment | Very
little manual intervention|
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###Summary:
To comprehensively evaluate the sorting performance of an electromagnetic dry
powder magnetic separator, it is necessary to combine * * technical
parameters+on-site effects+sample analysis+customer experience * *. If you have
specific equipment models or sample data, I can help you conduct a targeted
evaluation and analysis. If needed, please let me know at any time.