- [[Rotary dryer]]
- [[Fluidised dryer]]
- [[Spray dryer]]
| Feature | Spray Dryer | Fluidized Bed Dryer | Tumbling Dryer |
| -------------------- | ----------------------------- | ------------------------ | ----------------------------- |
| **Feed Form** | Liquid / Slurry | Wet Granules / Powder | Bulk Solids / Pastes |
| **Final Form** | Fine Spherical Powder | Granules | Bulk Solids |
| **Drying Time** | Seconds | Minutes | Minutes to Hours |
| **Heat Sensitivity** | Excellent for sensitive items | Good | Poor to Moderate |
| **Scale** | Medium to High | Medium | Very High (Massive) |
| **Key Advantage** | Liquid to Powder in 1 step | Extremely uniform drying | Handles "difficult" materials |