Revtech Process Systems : Global industrial solution for heat treatment of bulk solids and gases
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Revtech roasting technology

Continuous electrical dry roasters

Very different from drum roasters or hot air systems, REVTECH continuous roasters are based on simple and smart principles:

  • Transport & mixing in a closed spiral tube by vibrations,
  • Heating by direct contact with an electrical impedance tube.

The main caracteristics are as follows:

  • Temperature between 50°C to over 300°C,
  • Residence time between 3 and 40 minutes,
  • Customized continuous roasters with flow rates ranging from 300 kg/h up to 5 000 kg/h,
  • A wide range of product can thus be roasted or toasted like almonds, cashew nuts, pistachios, hazelnuts, sunflower seeds, pumpkin seeds, sesame seeds, wheat, barley, tea, spices,


Pasteurization is ensured during roasting

Due to its unique configuration, the REVTECH roasters can ensure the pasteurization of the product during its roasting - which guarantees eradication of all pathogens: Salmonella, E. coli, yeasts, moulds...

This pasteurization can be validated for each unit by an independent laboratory following a given test protocol (for instance the Almond Board of California protocol).

Proof of principle of the Almond Board of California obtained by Revtech


Great added value to your products

  • Perfectly even roasting is ensured due to the vibro-fluidised operation,
  • Improved roasted flavor as the product is roasted in a confined atmosphere in its own vapors giving an extra roasted taste,
  • Very gentle handling, even fragile nuts, like cashew nuts or peanuts, are not broken and the skin of almonds remains intact,
  • Wide range of color and taste available with the same unit as temperatures and residence times are precisely controllable.
Revtech roasting cashews - great flexibility


Cutting edge technology for your factory

  • Environmental friendly technology : ~ 90% of the energy transferred to the product (compared to usually less than 30% with traditional roasting systems) and no large amounts of polluted air exhaust the unit (contrary to hot air roasting systems),
  • No air handling units, fans or ducts are required: costs are reduced and fire risks eliminated,
  • Low energy consumption, ~ 140 W/kg, which means a complete 1 ton/h unit would consume ~ 140 kW,
  • Minimal maintenance and easy cleaning.
Revtech herbs and spices steam sterilization
Complete spice and dried vegetable pasteurization line