How to Choose Between Rotary and Slep Activation Furnaces
Technical Support
Rotary activation furnaces suit continuous large-scale production with various feedstocks, while Slep furnaces excel at high-iodine-value granular carbon from shell-based materials. Selection depends on feedstock type, target iodine value, capacity, and energy costs.
Four-Dimension Comparison
| Dimension | Rotary Furnace | Slep Furnace |
|---|---|---|
| Feedstock | Coal/wood/shell char | Coconut/apricot shells |
| Operation | Continuous | Batch/semi-continuous |
| Capacity | 1-10 t/d | 2-5 t/d (single) |
| Iodine value | 800-1000 mg/g | 900-1100 mg/g |
| Energy | Internal heat, heat recovery | Self-balancing, low steam |
| Investment | Medium | Higher |
| Automation | Medium-high | Lower |
| Refractory life | 2-3 years | 2-3 years (activation zone) |
When to Choose Rotary
- Mixed feedstock (coal + wood)
- Target capacity >5 t/d
- Iodine value 800-1000 mg/g acceptable
- Higher automation preferred
When to Choose Slep
- Shell-based feedstock (coconut, apricot)
- Iodine value >1000 mg/g required
- Low electricity/steam costs
- High-value granular carbon production
Combined Layout
Large projects may use both: rotary for volume products, Slep for premium grade. Suitable for 10,000+ t/a plants.
Songrui provides investment and energy comparison analysis for both furnace types to support optimal decision-making.