Case Overview
Full-process case study: carbon fiber micro-powder pelletized to improve compaction density. Demonstrates the pelletizing process and compaction density optimization for carbon fiber fine powder.
1. Material and Target
| Material Type | Carbon fiber powder (micron-scale) |
|---|---|
| Initial Condition | Carbon fiber micro-powder; extremely low bulk density, poor flowability, difficult to transport and feed |
| Material Source | Customer-supplied material |
| Key Challenge | Carbon fiber micro-powder is extremely fluffy — low bulk density drives up transport costs and makes downstream feeding difficult; pelletizing is required to increase compaction density and improve processability |
| Target Output | Pelletized granules (increased compaction density, improved flowability and feeding) |
| Downstream Use | Raw material for lithium battery conductive agents, composite material reinforcement filler, intermediate products for easier transport and storage |
2. Case Visuals
Raw Material
On-Site
Finished Product
3. Equipment Setup
- Core Equipment: Pelletizing / Compaction Equipment
- Process Route: Carbon fiber micro-powder → pelletizing & compaction → dense granule discharge
- Processing Objective: Convert fluffy micro-powder into granules with defined compaction density and flowability
4. Process Highlights
Why Pelletizing Is Necessary
Carbon fiber powder (especially ultra-fine grades above 300 mesh) has extremely low bulk density, creating difficulties in transport, storage, and downstream feeding. Pelletizing is a critical downstream processing step — compressing micro-powder into dense granules significantly increases bulk density and flowability.
Compaction Density Control
Compaction density during pelletizing is a key quality metric — too low and the improvement is marginal; too high and the granules may be difficult to re-disperse in downstream applications. The compaction parameters must be precisely controlled based on the customer's downstream process requirements.
Partnership with крупного производителя углеродных нанотрубок Technology
крупного производителя углеродных нанотрубок Technology is a publicly listed company in the carbon nanotube and carbon fiber conductive agent sector. This collaboration focused on optimizing the pelletizing compaction density of carbon fiber powder.
5. Result Summary
- Output: Dense carbon fiber granules after pelletizing; bulk density significantly increased
- Pellet Properties: Improved flowability, suitable for pneumatic conveying and automated feeding; re-dispersible in downstream solvents
- Applications: Lithium battery conductive agents, conductive coatings, composite material reinforcement fillers