Home Industry A wood pellet plant’s conventional manufacturing procedures

A wood pellet plant’s conventional manufacturing procedures

by Whitney

A major form of pellet mill would be the pellet factory. It consists primarily of a wood shredder, crushing mill, drier, pellet machine for wood, refrigerator, and various ancillary equipment. There are eight steps in the production process:

Before beginning the manufacturing process, the natural resources need to be pre-processed. Compaction is a significant aspect in many industries, such as pelletization or the concrete manufacturing process, because it may be a productivity major bottleneck and also one of the most expensive processes in the system.

Natural resources, such as wood, are always pre-processed with a wood shredder. The chopped wood should always be decreased to a size of less than 6mm after grinding.


When turning into pellet mills, the raw ingredients must be dried. When it comes to ordinary wood pellet plants, the disc dryer, often known as a flash dryer since it operates at high degrees, is often the best option.

Drum dryers feature a cheap total cost of ownership and uncomplicated operation methods. They feature a tumbler that exposes its plant product to hot air regularly. A flatbed drier, which operates at a low temperature, is another option. The necessary water content can be attained after dehydration.

Sifting before starting

Contaminants such as metals, stones, and other elements must be filtered out of the raw resources to determine the quality of the pellets. After turning the crude ingredients into pellets, they should be inspected for pebbles, polymers, as well as other shards, among other things. Larger rocks or other items are physically sorted, or a rock trap is installed to isolate the raw materials from extraneous things. Some, such as various alloys, are removed from the conveyor belt using a magnet.


Grinding is a crushing mill procedure that reduces the size of the material to 4-8 millimeters by using blunt blows. The raw components must be dried at this point. Filters are even used to regulate the size of the scrape.


In this stage, the raw compounds are usually formed into pellets. The wood pellets will be expelled by the machines via the die opening of pellet mills with immense pressure, becoming hot and mushy, and must be proportioned according to the operator’s needs.


Air chilling is required to change rapidly extruded particles into hardened and reinforced pellets to produce the best woodchips. When the pellets exit the machine, they are extremely hot and flexible, making them a readily malleable material.

This item must be handled as carefully as possible until it has cooled, hardened, and set. The ultimate moisture percentage of the pellets will become as low as 6% after freezing, and they will be delivered to the storage building by conveyor belt.

The last sifting

Before distribution to consumers, the manufactured and refrigerated pellets are normally screened to eliminate large particles and impurities. The degree is determined by the local economic environment as well as personal choices.

Packaging and Storage

Pellets are bundled into compact bags after the procedure to provide ease of use and a better picture because the particles are less prone to scratches throughout transportation.

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