What To Look For In A Professional Small Pellet Mill

Pellet mills come in various different shapes and sizes, including small pellet mills. There are various different designs of pellet mills, and some are more common than others in the design of small pellet mills. Also the size of the pellet mill can influence its ability to process various raw materials. Therefore a small pellet mill can struggle to produce pellets out of certain materials, particularly high density materials, such as wood pellets and particularly hardwood pellets.

Conditioning and Power Requirements

The reasons most small pellet mills struggle to produce wood pellets, is they lack sufficient power to compress the wood, and they also do not generate sufficient heat to melt the wood. As wood is a much harder material than grass for example, either more power is required in terms of a larger motor, or a lower gearing. Wood melting is crucial to the pellet process and pellet binding. Wood melts at a much higher temperature than grass, and the friction generated in a small mill is usually insufficient to reach the required temperatures. Larger pellet mills have a larger contact area, which generates more friction, and thus heat. Also large pellet machines usually have steam conditioners to raise the temperature of the wood fibre before it enters the pellet mill for compression.

Flat Die Pellet Mills Have Their Limits

There are two core principle designs of pellet mills, which is either a flat die or ring die design. Flat die pellet mills work on a vertical process design, with raw material entering from above and dropping down into the process area. The die is horizontal, with a set of rollers rotating across the surface. As the raw material falls from above, the rollers compress the material through the die in a vertical motion. Flat die pellet mills are a much more popular design for small pellet mills, mainly due to the fact they are mass produced in China. However the quality of these small pellet mills is very low, and many have experienced issues.

Ring Die Pellet Mills Are The Best Option

Ring die pellet mills work in a different manor to flat die pellet mills. In a ring die pellet mill the die encompasses the rollers, hence the 'ring' description. The rollers apply pressure to the inner surface of the die, compressing material through the outer surface of the die. Material is forced fed horizontally into the centre of the ring, Pellets then fall vertically away from the ring. Small ring die pellet mills are rare, and we offer one of the few available in the mini pellet mill. This pellet press has been designed to operate from both a single phase and three phase power supply. This means is can be used in both residential and industrial applications. The main markets for the mini pellet mill is research and educational purposes. To learn more please click the link below and enter your details.

The Wood Pellet Production Guide © PelHeat Ltd - What To Look For In A Professional Small Pellet Mill