Natural graphite material production line

01. Crushing zone
02. Spheroidization plastic surgery area
03. Purification area
04. Airflow crushing zone
05. VC mixed zone

06. Covering area
07. Carbonization zone
08. Depolymerization zone
09. Demagnetized screening partition
10. Packaging area

Natural graphite material production line

Solution Overview

Natural graphite anode material is a crucial component for lithium-ion battery anodes. Endowed with its inherent layered crystal structure, high theoretical specific capacity, and cost competitiveness, it has been widely applied in power batteries, consumer electronics batteries, and other related fields. Its production line mainly focuses on the purification, modification, and shaping of natural graphite raw materials, aiming to enhance the material’s electrochemical performance—including cycling stability, rate capability, and lithium intercalation/deintercalation efficiency.

360
mAh

Capacity:≥
88-92.5
%

First-effect:≥
2000
次

Cycle:≥

Parameters

Parameter Name	Flake graphite (high-purity grade)	Microcrystalline graphite (battery grade)	Test Method
Fixed carbon	≥99.95%	≥99.0%	High-temperature calcination method
Ash content	≤0.05%	≤0.5%	ISO 8005
Sulfur (S)	≤0.001%	≤0.01%	Infrared absorption method
Iron (Fe)	≤50 ppm	≤300 ppm	ICP-MS
Silicon (Si)	≤100 ppm	≤500 ppm	ICP-OES
Moisture content	≤0.1%	≤0.2%	Karl Fischer method
Graphitization degree	Natural ≥98%	Natural 70-90%	XRD
First discharge capacity	360-370 mAh/g	310-330 mAh/g	GB/T 24533-2019
First coulombic efficiency	91-94%	88-92%	0.1C, 0.005-2V vs Li
Compacted density	1.6-1.75 g/cm³	1.5-1.65 g/cm³	20MPa electrode sheet pressure
Cycle life (25°C)	>1500 cycles	>2000 cycles	Battery test cabinet