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Grain dryer

Also called: paddy dryer, paddy dryer machine, rice dryer machine, grain dryer machine

Step 4 of 8: Drying

A column or bin dryer that blows heated air through the steamed paddy and brings it down to a moisture that is safe for milling and storage.

Availability subject to feasibility check

Prices depend on the specification and the supplier. Request a quote.

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Example of a Grain dryer
Example of this machine type, not a specific model we supply.Photo: Unknown authorUnknown author, CC BY-SA 4.0, commons.wikimedia.org, edited

Grain dryer: how it works

  1. Wet paddy is lifted by an elevator into the top of a tall drying column.
  2. A fan blows air, warmed by steam or by a husk furnace, across the paddy as it moves slowly down.
  3. The air carries the moisture away; the paddy then rests in a holding section, so moisture from the centre of the grain moves outward.
  4. The paddy goes round or passes through several stages until it reaches the moisture for milling, and is then cooled.

Main types

Batch recirculating dryer
One lot circulates through the column until it is dry. Common for small and medium mills.
Continuous-flow column dryer
Paddy flows through without stopping, often through several columns with rests between. For large mills.
Fluidised-bed pre-dryer
Hot air lifts a thin layer of very wet parboiled paddy and takes off the surface water quickly, before the column dryer.

Where it fits in the process

In a rice mill it follows steaming: hot, wet parboiled paddy comes in, and dry, cooled paddy goes to storage or straight to the husker.

The same machine in another industry: Agriculture

Grain dryer price in Bangladesh: how to get a quote

We do not publish prices. The price of a machine depends on its specification, the supplier and the shipping terms, and it changes with the market. Tell us the points below: we check feasibility and the import rules, then send you a quotation.

What to tell us

  • Parboiled paddy or raw paddy.
  • How much paddy you dry in a day.
  • The heat source: steam from your boiler, a husk furnace or another fuel.
  • Batch or continuous, and the height you have.
  • New or reconditioned.
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Common questions

Why use a dryer machine instead of a drying floor?

A dryer works in rain and at night, needs far less land and labour, and dries every grain alike, so fewer grains crack and break in milling. A sun-drying floor costs little to build but depends on the weather.

Why is paddy rested between drying passes?

Drying takes water from the outside of the grain first. If the outside dries much faster than the centre, the grain cracks. Resting, called tempering, lets the moisture even out before the next pass.

What is the price of a paddy dryer machine in Bangladesh?

We do not publish prices. The price depends on the type, how much paddy it must dry in a day, the heat source and whether it is new or reconditioned. Send us the points listed above and we will quote.