1. Product Core
Spherical Graphite Raw Material is a key basic material made from natural graphite as the initial raw material, processed through core processes such as physical purification and precise sorting. Its core value lies in retaining the unique layered flake structure of natural graphite, while possessing high crystallinity, excellent conductivity and thermal conductivity, and other physical and chemical properties. As the core raw material for preparing spherical graphite, it is a key link between natural graphite resources and high-end functional materials such as lithium batteries and conductive materials. It can provide core support for the performance optimization of downstream spherical graphite products, ensuring the stability and efficiency of terminal applications.
2. Product Features
Distinctive morphological characteristics: The overall structure is typical in the form of flakes or scales, with a diameter ranging from 0.15-0.8mm. The thickness is relatively thin, and the appearance is silver gray or gray black with a metallic luster. The packing density is at a moderate level. This morphological characteristic is convenient for subsequent processing steps such as crushing and spheroidization, reducing the difficulty of the process.
Significant high-purity advantage: Through advanced purification processes, the fixed carbon content of the product can reach over 90%-99.9%, and the corresponding ash content is extremely low (usually ≤ 0.5%-5%, with specific values adjusted according to the purity level). In addition, the content of impurities such as silicon, aluminum, and iron is strictly controlled at a low level, which can effectively avoid performance interference problems in downstream product production processes and improve the quality of end products.
Excellent and stable physical and chemical properties: Characterized by high crystallinity, weak interlayer adhesion, and easy interlayer sliding, providing convenience for processing and forming; At the same time, it has good conductivity and thermal conductivity, and has strong chemical stability in complex environments such as high temperature, acid and alkali, making it difficult to undergo chemical reactions, which can ensure the long-term stable operation of subsequent products and extend their service life.
Wide processing adaptability: The unique scale structure makes it easy to form regular spherical particles during crushing and spheroidization processes. After forming, the product has high sphericity and smooth surface, which can adapt to the production needs of different specifications of spherical graphite. It can also be flexibly adjusted according to actual processing parameters to meet diverse production scenarios.
3. Product Usage
Core raw materials for lithium battery negative electrode materials: This is the main application area of this product. After a series of processes such as crushing, spheroidization, coating, and carbonization, it can be processed into spherical graphite, which can be used as a negative electrode material for lithium-ion batteries. It is widely used in power batteries (suitable for new energy vehicles), energy storage batteries (used for energy storage power stations, household energy storage, etc.), and consumer batteries (such as mobile phone, laptop, tablet and other device batteries). It can provide high specific capacity, long cycle life, and excellent charging and discharging performance for batteries, and help promote the development of the lithium-ion battery industry.
Key fillers in the field of conductive materials: Can be added as conductive fillers to basic materials such as plastics, rubber, and coatings to prepare conductive composite materials, which are applied to electronic component casings (to enhance anti-static ability), anti-static packaging materials (to avoid damage to internal products caused by static electricity), conductive coatings (used for electronic equipment casings, power transmission and transformation equipment, etc.), effectively improving the conductivity of materials and reducing static electricity hazards.
Important component of the refractory materials industry: With excellent high temperature resistance and slag erosion resistance, it can be used to produce refractory bricks (used for lining steel and metallurgical kilns), refractory coatings (used for protecting high-temperature parts of industrial equipment), crucibles (used for metal melting) and other refractory materials. It can significantly improve the service life and high temperature resistance of refractory products, ensuring stable high-temperature industrial production.
Other multifunctional applications: Spherical Graphite Raw Material can also be used in lubricant (reducing friction coefficient through interlayer sliding, suitable for mechanical component lubrication), sealing material (used for pipeline and equipment interface sealing with good sealing performance), braking material (improving wear resistance, used in automotive and mechanical braking systems) and other fields, optimizing related product functions through its own performance
4. Technical Parameters
|
Technical Indicators |
Unit |
Conventional Scope |
Instructions |
|
Fixed Carbon Content |
% |
90.0-99.9 |
Core purity indicators are classified into different levels based on downstream application requirements (such as 95%, 99%, 99.9%, etc.), with higher purity being more suitable for high-end scenarios (such as high purity being suitable for the lithium-ion field) |
|
Scale Size |
mm |
0.15-0.8 |
Support customization of different particle size ranges based on personalized customer needs, with common specifications including 0.15-0.3mm, 0.3-0.5mm, and 0.5-0.8mm. Different sizes are compatible with different processing techniques |
|
Ash Content |
% |
≤0.5-5.0 |
There is a negative correlation between fixed carbon content and ash content. The higher the fixed carbon content, the lower the ash content. Low ash content can reduce the adverse effects on downstream product performance |
|
Moisture Content |
% |
≤0.5 |
Key storage stability indicators, controlling moisture content can avoid product clumping or deterioration during storage, ensuring smooth subsequent processing |
|
Volatile Content |
% |
≤1.0 |
Refers to the content of volatile substances in a product under certain temperature conditions. Excessive volatile matter may affect the stability of the processing and needs to be strictly controlled |
|
pH Value |
- |
6.0-8.0 |
The overall product is neutral or weakly alkaline, which can reduce corrosion to processing equipment and avoid interference with the chemical properties of downstream products |
|
Sulfur Content |
% |
≤0.05 |
Important harmful impurity indicators, especially those that have a significant impact on the cycling and conductivity performance of lithium battery products, require strict upper limits |
|
Iron Content |
% |
≤0.02 |
Core harmful impurity indicators, excessive iron content may lead to decreased conductivity and shortened cycle life of downstream products, requiring precise control of content |
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