Cashew Dryer Machine (Borma)
Controlled borma drying
A borma drying chamber that brings shelled kernels to the ideal moisture level, loosening the testa skin for high-yield peeling.
The TTQ Cashew Dryer Machine (borma) dries shelled cashew kernels under controlled heat so the brown testa turns brittle enough to peel. It is a batch machine — kernels are loaded on aluminium trays in trolleys and held at a regulated 70–80°C for 13–14 hours until moisture reaches 3–4%. Heat comes either from electrical coils or from boiler steam passed through heat-transfer coils; the shell burner fires the boiler (and the roasting machine), so the shell still ends up paying for the heat, just one step removed. Correct drying is what makes dry-peeling clean and high-yield: over- or under-drying both raise breakage.
Technical specifications
| Function | Dries kernels, loosens testa skin |
|---|---|
| Type | Tray and trolley (borma) — batch only, not continuous |
| Temperature | Regulated 70–80°C |
| Target moisture | 3–4% |
| Heat source | Electrical coils, or boiler steam through heat-transfer coils |
| Capacity | 0.5 to 4.5 tonnes per batch, 13–14 h cycle |
| Control | Digital panel — temperature control and moisture display |
| Build | Insulated chamber, aluminium trays and trolleys; stainless steel chamber, trolleys and trays available |
Figures are typical and configurable — we confirm exact specifications against your capacity and grade targets.
Why the drying stage sets the peeling yield
Even, regulated heat
Uniform airflow and thermostatic control dry every tray to the same moisture.
Sets up high-yield peeling
Correct drying loosens the skin so dry-peeling releases whole kernels cleanly.
Electric or steam heat
Heat-transfer coils carry either electrical resistance heat or steam from the plant boiler. Where the boiler is shell-fired, the plant’s own waste ends up paying for the drying stage.
Digital temperature and moisture
A digital control panel holds the temperature and shows moisture as the batch dries — no PLC layer to specify or maintain.
Model & capacity comparison
Every model TTQ builds for this stage, side by side. Pick by throughput and footprint — each links straight to a quote.
Borma dryers — models
Controlled hot-air (borma) drying to loosen the testa before peeling. Batch sizes from 0.5 T to 4.5 T.
| Model | Capacity | Power | Footprint (L×W×H) | Cycle | Crew | Ref | Quote |
|---|---|---|---|---|---|---|---|
| 0.5 T | 500 kg/batch | 2 HP (1.5 kW), 3-phase 380V, 2 fans | 3.8 × 1.3 × 1.8 m | 13–14 h/batch | 1 | TTQ-DRY-01 | Quote → |
| 0.5 T (electric) | 500 kg/batch | Electric resistor 18 kW | — | 13–14 h/batch | 1 | TTQ-DRY-02 | Quote → |
| 1 T | 1 T/batch | 4 HP (3 kW), 3-phase 380V, 4 fans | 3.8 × 1.6 × 2.2 m | 13–14 h/batch | 1 | TTQ-DRY-04 | Quote → |
| 1.5 T | 1.5 T/batch | 4 HP (3 kW), 3-phase 380V, 4 fans | 3.8 × 2.2 × 2.3 m | 13–14 h/batch | 1 | TTQ-DRY-06 | Quote → |
| 2 T | 2 T/batch | 4 HP (3 kW), 3-phase 380V, 2 fans | 4.8 × 3.0 × 2.0 m | 13–14 h/batch | 1 | TTQ-DRY-08 | Quote → |
| 4.5 T | 4.5 T/batch | 4 HP (3 kW), 3-phase 380V, 2 fans | 4.85 × 3.65 × 2.05 m | 13–14 h/batch | 1 | TTQ-DRY-10 | Quote → |
Specifications are indicative and configurable; TTQ confirms exact figures against your capacity, grade targets and factory layout. Model codes shown are TTQ quotation references.
The process, drawn
The moisture ladder
Every number a cashew plant lives or dies by is a moisture number. Read left to right — this is the same journey as the eight stages, seen through water content.
Stages 03 and 04 look contradictory and are not. Drying makes the skin brittle; humidification softens only the outer surface so the skin lets go without the kernel softening with it.
The 2–4 hour peeling window
Peeling performance is decided before the kernel reaches the peeler. Miss the window and no machine recovers it.
The clock starts when kernels leave the humidifier. Beyond four hours the moisture redistributes through the kernel, the surface-to-core gradient disappears, and white-whole yield falls regardless of how good the peeler is.
The geometry behind it
The peeling window
Two failure modes move in opposite directions as kernel moisture changes. Below about 5% the kernel is brittle enough to break under the same force that removes the skin; above about 6% the testa softens and clings. The workable window is where both are low at once, and it is narrow.
Schematic, not measured data: the curves show the direction and the crossing, not values from a trial. The moisture figures on the axis are the ones this site commits to — 3–4% out of drying, 5–6% entering the peeler, 3–5% at packing.
Where it fits in the process
Borma drying follows shelling and precedes humidification. Its heat comes from electrical coils or from the boiler — and where that boiler burns shell, the loop closes on the plant’s own waste.
Cashew Dryer Machine (Borma) — FAQ
Why do cashew kernels need drying before peeling?
What temperature and time are used?
What fuel does the dryer use?
Pairs well with
Cashew Peeling Machine
High whole-kernel yield, dry-peeled
Open →
Cashew Nut Shelling Machine
Crack the shell, keep the kernel
Open →
Cashew Vacuum Packing Machine
Nitrogen-flush, export shelf life
Open →
How Humidity Affects Cashew Peeling
Get the moisture right, peel more wholes
Open →Get a quote on the Cashew Dryer Machine (Borma)
Tell us your target capacity and grades. We'll come back with the right configuration, a layout and a costed proposal.