Automation for continuous running is built around closed-loop control, automatic material transfer, online monitoring, and interlock protection — eliminating manual feeding, screening, adjusting, and packaging.
1. Full-Line Continuous Structure Design
Replace batch operation with a truly closed-loop, continuous flow: Raw material silo → automatic feeding → coarse grinding → ultrafine grinding → classification → drying/purification → dust removal → finished product silo → automatic packaging
All stages connect via closed pneumatic/gravity conveying to avoid manual transfer.
2. Automated Raw Material Handling
- Bulk silos with radar/ultrasonic level sensors
- Loss-in-weight feeders for high-precision constant feeding
- Automatic switching between silos to ensure no interruption
- Pneumatic conveying to keep graphite clean and dust-free
3. Autonomous Grinding & Classification (Core Section)
The grinding system runs fully automatically:
- PID-controlled mill speed, air volume, feeding rate, and cooling temperature
- Online laser particle size analyzer → real-time data → automatic adjustment of classifier speed
- Closed-circuit grinding: oversized particles automatically return to mill
- Cooling system (water/gas) controlled by temperature sensors
- Overload / overheat / blockage → automatic slowdown or alarm
This keeps particle size stable without manual tuning.
4. Automatic Drying & Purification
- Continuous dryer with online moisture sensor
- Temperature and feeding speed automatically adjusted
- Automatic magnetic separation (iron removal)
- Self-cleaning screens with blockage detection
5. Automatic Dust Collection & Environmental Control
- Baghouse filter with automatic pulse cleaning
- Negative pressure auto-controlled
- Dust concentration & oxygen monitoring
- Explosion-proof interlock for graphite dust safety
6. Central Control System (PLC + SCADA)
The brain of continuous operation:
- PLC (Siemens/Allen-Bradley) controls all equipment
- SCADA shows real-time: temperature, pressure, flow, particle size, level, power
- Sequence interlock: Start/stop in safe order; local fault does not shut down the whole line
- Remote monitoring + alarm (App/SMS)
- Fault self-diagnosis
7. Automatic Finished Product Storage & Packaging
- Finished product silo with level control
- Auto weighing & bagging (25kg / jumbo bag)
- Automatic sealing, labeling, palletizing
- Robotic palletizer + AGV to warehouse
8. Key Features for True 24/7 Continuity
- Redundant components: backup pumps, sensors, fans
- Unattended mode: night/weekend automatic operation
- Self-protection logic: overtemp → reduce feed; blockage → reverse; low material → wait
- Data logging & traceability for quality and production