Cassava drying systems in Nigeria
What the crop demands, what the country imposes, and what that means for capacity.
Nigeria grows more cassava than any other country on earth, and converts remarkably little of it into anything shelf-stable. Most is eaten as gari or fufu within days of lifting. A national policy push toward cassava flour in bread has repeatedly stalled on the same practical problem: nobody can supply flour of consistent moisture at scale.
The situation in Nigeria
The domestic market is the story. Two hundred million consumers mean a processor can build a serious business without ever exporting, which changes the specification: buyers want volume, price and consistency rather than EU documentation. Power is the binding constraint almost everywhere, and a heat source that does not depend on the grid is not a sustainability choice here but an operational one.
Growing regions. Kano, Kaduna and Kebbi in the north, Oyo and Ogun in the south-west, the Niger delta
What cassava drying demands
Cassava deteriorates within 48 hours of lifting, which makes it the most time-pressured root crop there is. Chipped and dried to 10–12 % it becomes flour, gari or an industrial starch feedstock with a shelf life measured in months rather than days. The drying itself is undemanding; the clock is the difficulty.
Harvest calendar
Year-round harvest. The root is lifted as needed rather than in a season, so a drying line never runs out of raw material and never has an off-season.
The working campaign window as the trade runs it. It shifts a fortnight either way with the rains.
Process parameters
| Parameter | Value |
|---|---|
| Drying temperature | 55–65 °C |
| Final moisture | 10–12 % |
| Yield (fresh : dried) | 3 : 1 |
| Cycle time | 10–16 h |
Sizing starting points from ordinary processing practice, not a validated recipe for your product. Confirm against your own intake and your buyer’s specification.
Worked sizing example
For a unit taking 25 tonnes of fresh product a day, at a yield of 3 : 1:
Illustrative figures calculated from the yield and campaign window above. They size a conversation; they do not describe any existing installation.
Fuel available in Nigeria
Palm kernel shell in the south-east, rice husk in Kebbi and the north, and an unmatched cassava peel resource — wash it before use.
- Base load. Palm kernel shell · Rice husk · Cassava peel
- Supplement. Cashew shell · Corn cob · Sawdust · Cocoa pod husk
See all 27 fuels and their properties
Market and buyer requirements
Domestic at enormous scale — high-quality cassava flour, gari, and industrial starch for food, brewing and textiles. The export market is real but secondary to a domestic one of two hundred million people.
Frequently asked questions
Why has cassava flour repeatedly stalled in Nigeria?
On consistency rather than volume. Bakers need flour at a reliable 10–12 % moisture, and sun-dried chips arrive at whatever the week’s weather produced. Controlled drying at 55–65 °C makes the specification repeatable, which is what the policy has always assumed and rarely had.
How fast must cassava be processed?
Within about 48 hours of lifting. The root deteriorates rapidly once out of the ground, so siting the dryer near the farm rather than near the market is usually the right decision — the clock, not the cycle, is the constraint.
What does 25 t/day of fresh root produce?
Roughly 8.3 tonnes a day of dried chip or flour at about 3 : 1, on a 10 to 16 hour cycle. Because the harvest is year-round, that is close to 3,000 tonnes annually from one line — no seasonal idle period at all.
Size a unit in Nigeria
Tell us your daily fresh volume and target output, and we will size the chambers, the burner and the fuel available around your site.
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