Grain Roaster Machine
Grain Roasting
Machine is a versatile food processing unit used to roast, toast, or reduce the
moisture content of various grains, seeds, pulses, and nuts. Unlike fryers,
these machines use dry heat (convection or conduction) to transform raw grains
into aromatic, crispy products like roasted chana, peanuts, puffed rice (muri),
or coffee.
1. Technical
Specifications
|
Feature |
Details |
|
Capacity |
25 kg/batch up to
2000 kg/hr (continuous) |
|
Heating Method |
LPG, Natural Gas,
Electricity (Induction), Wood, or Coal |
|
Drum Material |
SS 304 (Food
Grade) or MS (with heat-resistant coating) |
|
Temperature Range |
40°C to 250°C
(Digital PID Control) |
|
Power Consumption |
1 HP to 5 HP (for
motor) + Heating Element (if electric) |
|
Automation |
Semi-Automatic
(Manual Tilt) or Fully Automatic (PLC based) |
2. Common Types of
Grain Roasters
- Rotary Drum Roaster (Batch Type): The most
common design. A horizontal drum rotates over a heat source. Internal
flight blades (stirrers) ensure the grains are tossed continuously for a
uniform roast.
- Continuous Roasting Line: Used for
high-volume production. Grains enter one end and travel through a long
heated tunnel or a large rotating drum, exiting fully roasted at the other
end.
- Sand Roasting Machine: A traditional yet
modernized method where grains (like peanuts or chana) are roasted in hot
sand within a rotating drum. The sand acts as a heat transfer medium for
an extremely even, "bhatti-style" crunch.
- Induction Roaster: A high-tech, smoke-free
option that uses electromagnetic induction to heat the drum directly. It
is 90% energy-efficient and offers precise temperature control.
3. Key Components
& Features
- Insulated Heating Chamber: To prevent heat
loss and ensure the outer body remains safe to touch.
- Variable Speed Drive (VFD): Allows you to
adjust the drum's RPM. Slower speeds are for heavy pulses, while faster
speeds are for light grains like puffed rice.
- Dust/Smoke Extraction: Integrated blowers
and chimneys to remove the fine husks and smoke generated during the
roasting of items like soybeans or coffee.
- Cooling Tray: Some systems include a
circular tray with a fan at the bottom to rapidly cool the grains
post-roasting, stopping the cooking process instantly.
4. Application
Versatility
This machine is a
"multipurpose" workhorse for:
- Pulses & Legumes: Chana (Chickpeas),
Moong Dal, Soybeans.
- Seeds & Nuts: Peanuts, Sesame seeds,
Cashews, Almonds.
- Cereals: Wheat, Barley, Maize (Corn), Poha
(Rice flakes).
- Spices: Coriander, Cumin, Pepper (before grinding).
