Spirulina drying converts filtered algae paste of about 75–85% moisture into powder, flakes or noodles for supplements and feed. Phycocyanin, the blue pigment, is highly heat-sensitive and sets much of the product's value. Many producers extrude the paste into thin strands and dry them on a belt at low temperature.
To dry spirulina, GEM recommends the Band Dryer (Beltotherm). Typical moisture is 75–85% in the feed and 4–7% after drying. Freeze Dryer / Lyophilizer and Single / Double Drum Dryer are used when the feed or site calls for it. Every project starts with a pilot trial on your own sample.
A Beltotherm band dryer suits spirulina once extruded into noodles, which form a porous bed for low-temperature air. Freeze drying gives the highest phycocyanin retention at higher cost; drum drying suits feed grades where some colour loss is acceptable.
| Typical feed moisture | 75–85% |
| Typical target moisture | 4–7% |
| Recommended dryer | Band Dryer (Beltotherm) |
| Alternatives | Freeze Dryer / Lyophilizer, Single / Double Drum Dryer |
| Application area | Herbal, Botanical & Nutraceutical |
| Industries | Nutraceuticals & Herbal, Animal Feed, Breweries & Distilleries |
Phycocyanin content sets spirulina's grade and price. Low-temperature drying protects it, while fast processing of freshly harvested paste reduces spoilage, odour complaints and microbial rejection by supplement buyers.
Plants searching for a spirulina dryer or comparing a spirulina drying machine usually need three answers: which dryer fits, what it costs to run, and how fast it pays back. For Spirulina, we start from your throughput, current moisture (typically 75–85%) and the target (4–7%), trial a sample on the Band Dryer, and return a sized recommendation with a budget quotation for your nutraceuticals and animal feed operation.
We trial your material in our pilot facility before any equipment decision, then size the dryer from real data.
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