Natural Graphite Anode Material
Natural Graphite Anode Material
Natural Graphite Anode Material
Natural Graphite Anode Material
May 08,2025
Typical Flowchart for Anode Material Made by Natural Graphite.
Grinding & Shaping
Spherical graphite is primarily manufactured using high-purity, high-carbon natural flake graphite as the raw material. The process involves plastic deformation of flaky particles through mechanical spheroidization, transforming their anisotropic sheet structure into near-spherical morphology.
Chemical Purification
Acid leaching is a widely used chemical method to purify natural graphite (typically 80–95% C) to ≥99% purity for applications like lithium-ion battery anodes.
Carbonization: purified natural graphite or natural graphite is uniformly mixed with pitch (pre-crushed to a specific particle size using specialized equipment) at a defined ratio in a high-speed mixer. The mixture is then transferred to a nitrogen-protected kiln for high-temperature carbonization at 1,200°C, where the pitch undergoes pyrolysis to form a carbon coating on the graphite surface.
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