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Tubular Centrifuge for Separating Graphene
A tubular centrifuge can be used to separate solid particles and liquid components from graphene and its dispersions. Graphene is a two-dimensional material composed of a single layer of carbon atoms, known for its excellent electrical conductivity, thermal conductivity, and mechanical properties. During the preparation of graphene, incompletely exfoliated graphite particles, impurities, or aggregates may be produced. The tubular centrifuge utilizes the centrifugal force generated by high-speed rotation to efficiently separate these components.
Pre-Treatment:
Perform preliminary filtration or ultrasonic treatment on the graphene dispersion to reduce large particulate impurities or aggregates.
Adjust the concentration and pH of the dispersion to ensure stable dispersion of graphene.
Centrifugal Separation:
Feed the graphene dispersion into the feeding system of the tubular centrifuge.
Start the centrifuge and adjust the rotational speed (typically 10,000-20,000 rpm) to separate unexfoliated graphite particles, impurities, or aggregates from single-layer or few-layer graphene using centrifugal force.
Heavier particles are deposited on the inner wall of the centrifuge tube, while the single-layer or few-layer graphene dispersion is discharged through the outlet.
Collection and Post-Treatment:
Collect the clarified graphene dispersion for further concentration or drying to obtain high-purity graphene.
Clean the centrifuge tube and collect the solid residue (which can be further processed or discarded as needed).
High-Efficiency Separation: Suitable for separating nanoscale particles, effectively isolating graphene from impurities.
High Purity: Enables the production of high-purity single-layer or few-layer graphene.
Continuous Operation: Ideal for large-scale production.
Flexibility: Centrifugal parameters can be adjusted based on the properties of the graphene dispersion.
Speed and Time: Optimize the centrifuge's rotational speed and operating time based on the concentration, particle size, and stability of the graphene dispersion.
Dispersion Stability: Ensure uniform dispersion of graphene in the liquid to avoid aggregation.
Cleaning and Maintenance: Regularly clean the centrifuge to prevent residue buildup that may affect separation efficiency.
Safety: Ensure compliance with operational standards to avoid risks associated with high-speed rotation.
By using a tubular centrifuge to separate graphene dispersions, the purity and quality of graphene can be significantly improved. This method is suitable for the following fields:
Electronics and Semiconductors: Manufacturing high-performance transistors, sensors, and flexible electronic devices.
Energy: Electrode materials for supercapacitors, lithium-ion batteries, and fuel cells.
Composite Materials: Enhancing the mechanical properties and conductivity of plastics, rubber, or metals.
Biomedical: Applications in drug delivery, biosensors, and tissue engineering.
The application of tubular centrifuges in graphene separation significantly enhances production efficiency and product quality, making it a highly efficient and reliable separation technology.
|
Model
|
Bowl Speed
(rpm) |
Drum Volume
(L) |
Motor
(KW |
Dimensions, Overall (mm)
|
|
75
|
19000
|
2.2
|
1.5
|
760*450*1120
|
|
105
|
16300
|
6
|
2.2
|
840*500*1600
|
|
125
|
15000
|
8
|
3.0
|
900*550*1600
|
|
150
|
14000
|
10
|
3.0
|
1020*600*1600
|
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