02 · Dried Fruit & Nut Processing — Equipment
Roasts peanuts, almonds, cashews and seeds to the colour and flavour you want. Drum, tray and continuous belt designs.
Short answer: A nut roaster heats peanuts, almonds, cashews, seeds and similar products until they reach the colour, flavour and crunch you want. The design follows your nut types and sizes, whether you roast in batches or continuously, how many temperature zones the recipe needs, and how even the colour must be.
In a rotary drum roaster, nuts are loaded into a drum that turns inside a heated chamber; hot air or the drum wall heats them while flights keep them moving. The operator or controller follows a time and temperature profile and discharges the batch onto a cooling tray, where stirring arms and a fan bring the temperature down quickly.
A tray oven roasts nuts spread on trays in a hot-air chamber. A continuous belt roaster carries a bed of nuts through several zones; each zone has its own temperature and air flow, so you can heat, roast and cool in one pass. Exhaust gas and chaff are drawn off through a cyclone or filter.
Moisture leaves the nuts during roasting, so the roasted weight is lower than the raw input; we size the roaster on raw nut input. Roasting time and temperature are a trade-off: a hotter, shorter roast gives more surface colour, while a lower, longer roast cooks the nut more evenly through.
| Form | Suits | Watch out for |
|---|---|---|
| Rotary drum | Mixed nut types, batch recipes, small to medium output | Batch handling; cooling must keep up |
| Tray oven | Seeds, small batches, product trials | Labour for tray loading |
| Continuous belt | Long runs of one nut type, large output | Needs steady feed and graded nuts |
Raw nuts arrive cleaned and, for shelled products, from a nut shelling machine. After roasting and cooling they go to a nut skin peeling machine, a nut seasoning line or a nut butter production line, and finally to packing.
Rotary drum
nuts tumble in a heated drum; flexible batch roasting for many nut types and smaller volumes.
Tray oven
nuts on trays in a hot-air chamber; simple, gentle, suits small production and seeds.
Continuous belt roaster
nuts travel through temperature zones on a belt; suits steady high-volume production.
Our engineers check these points with you, so the quotation fits your site rather than a catalogue default.
Mixed nut sizes, uneven loading, uneven air flow and slow cooling are common causes. Grading nuts by size and cooling them quickly after discharge usually help most.
A drum is flexible for changing products and smaller volumes. A belt roaster gives steadier results for long runs of one product but needs more floor space and a continuous feed.
Yes in most cases. Nuts keep cooking after leaving the roaster, so a cooling tray or belt with air flow is needed to stop the roast at the right colour.
Tell us your raw material, finished product and target output. Our engineers reply with a matched configuration and quotation.
What to send with your inquiry
Email sales@hnfoda.com
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Dried Fruit & Nut Processing
Investors and food companies starting or expanding dried fruit, fruit chip or dried fruit snack production.
Sized to fresh fruit input (kg/h or tonnes per day); dried output depends on moisture removed
Dried Fruit & Nut Processing
Date packers and processors adding value with washed, pitted or paste products for retail and industry.
Sized to whole date input (kg/h or tonnes per day)
Dried Fruit & Nut Processing
Food companies and brand owners launching peanut butter, almond butter or nut spread products.
Sized to roasted nut input (kg/h); output is close to input for pure nut butter
Dried Fruit & Nut Processing
Snack nut producers making salted, spiced, honey-roasted or coated nuts.
Sized to roasted nut input (kg/h) plus the seasoning added
