Note: JCSM510 (often referenced as CSM510 in industry documents) is JACAN’s integrated high-speed centrifugal spheroidizer with built-in turbo air classifier, specially designed for continuous shaping of natural flake graphite. It realizes particle edge rounding by high-speed particle-to-particle collision and friction, while removing ultra-fine debris online via the classifier loop.
Core Machine Parameters (JCSM510)
| Item | Parameter | Remarks for natural graphite spheroidization |
|---|---|---|
| Main rotor power | 160 kW | Variable frequency drive (VFD) |
| Classifier rotor power | 37 kW | Independent frequency control for fine powder cut point |
| Rotor speed range | 2,400 ~ 4,200 rpm | Higher speed = stronger shear / spheroidization; risk of over-fragmentation above 3,800 rpm |
| Rated feed capacity | 250–450 kg/h | Depends on raw PSD, moisture and target sphericity |
| Inlet raw D50 | 21–23 μm | Pre-ground flake graphite before entering JCSM510 |
| Finished product D50 | 18–20 μm | After closed-loop classification |
| Finished sphericity | ≥0.85 (stable) | 8–12 shaping cycles required for natural flake graphite |
| Tap density | 0.88–1.05 g/cm³ | Correlated directly with sphericity improvement |
| Chamber working temperature | ≤55 °C | Temperature interlock protection; overheating causes agglomeration |
| Working gas | Dry air, O₂＜100 ppm | Prevent graphite oxidation and static hazards |
| Material contact parts | Stainless steel + ceramic lining | Reduce iron contamination for battery-grade anode |
| Classification cut size | 1–3 μm | Online removal of ultrafine fines generated during shaping |
Key Process Operating Parameters to hit sphericity ≥0.85
- Rotor speed setting: 3,200–3,600 rpm (optimal window).
- Below 3,000 rpm: insufficient collision; edges remain sharp, sphericity <0.82.
- Above 3,800 rpm: excess impact creates excessive submicron fines, yield drops sharply.
- Feed rate: 300–380 kg/h for steady batch. Too fast → short residence time; too slow → over-processing.
- Number of closed-loop shaping cycles: 8–12 cycles for natural flake graphite. Each cycle passes particles through JCSM510 + classifier; off-spec under-rounded material is recycled back.
- Raw material preconditions before JCSM510 feeding:
- Moisture ≤0.5%
- Carbon purity ≥99.9%
- Pre-ground D50 21–23 μm, broad PSD removed in advance
- Classifier speed tuning: match main rotor speed to strip fine powder in real time. Fine powder accumulation inside chamber will reduce sphericity and worsen SSA.
Performance Output under Optimized JCSM510 Parameters
- Sphericity: ≥0.85 (typical 0.86–0.88 after full cycle treatment)
- Specific surface area (SSA): 4.5–6.0 m²/g
- Yield: 42–52% (varies by raw flake quality and cycle count)
- Particle morphology: potato-like rounded graphite particles, reduced aspect ratio
Common Troubleshooting
- Sphericity stuck below 0.85: usually insufficient cycles, feed D50 too coarse, or classifier not removing fines effectively.
- Low tap density: excessive ultrafine powder; increase classifier rotor speed to cut fines.
- High SSA and heavy fragmentation: reduce main rotor speed or shorten residence time.
JCSM510 is usually used in series with pre-grinding mill and post polishing shaping unit (JCSM410) for mass production natural graphite anode lines. The single JCSM510 unit can reach ≥0.85 sphericity only when the upstream raw particle size and purity are strictly controlled.
