Sawdust drying is a vital pre‑process for biomass pellet lines.
Picking an unsuitable rotary dryer causes burnt material, unstable moisture,
high energy use, jamming and frequent shutdowns.
Do not select machine purely based on quotation.
As a rotary dryer manufacturer, we recommend evaluating material traits, temperature control, capacity,
site conditions and local environmental rules before you invest in a rotary dryer.
Lock in these 4 key parameters first for proper rotary dryer model selection:
1. Raw material: Pure sawdust or mixed bark/long fibers? Note incoming moisture and its fluctuation.
Mixed feedstock with big moisture swings needs a rotary dryer with better anti‑blocking and temperature tolerance.
2. Final moisture: Pellet production requires 8%‑12% outlet moisture.
This sets your drying load and temperature strategy for the rotary dryer.
3. Capacity: Calculate hourly/daily output.
Add 10%‑20% spare capacity for peak‑season demands when sizing your rotary dryer.
4. Heat source & compliance: Options include biomass hot‑blast stove, natural gas. Check local dust & exhaust emission standards.
Prepare dust collection and explosion‑proof systems beforehand to pair with your rotary dryer.
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