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One of the simplest plus lowest energy input ways to convert biomass into a efficient energy source, is to upgrade into wood pellets. At PelHeat we develop small scale mobile pellet machines, to process various forms of wood as you can see to the left. The two principle designs of pellet mills are either a flat die pellet mill, or in this case a ring die pellet mill. Ring die pellet mills were developed as an advancement on the straightforward flat die design. The two main reward of rind die pellet mills is reduced roller in addition to die wear, along with reduced fuel consumption. These factors have led to ring die pellet mills being adopted in most large scale pellet production lines. Yet flat die pellet mills are still more appropriate for small scale pellet production.

Learn more about Pellet Mill

A ring die pellet mill has a ring created die, along with a set of rollers. The die it positioned vertically, by way of the rollers set within the die, applying force to the inner edge of the ring. Because of the perpendicular roller and die position a motor is required to meter raw material into the centre of the ring.
Most ring die pellet mills operate by a driven ring in addition to a stationary roller set. However there is a small selection of ring die pellet mills with a stationary die as well as rotating roller set. Some ring die pellet mills are direct gear driven from the motor, while others are belt driven. The reward of gear driven is a more positive driving force without the potential slipping of belt systems. Though belt driven mills are more economically and access for drive changes are easier along with cheaper. The speed of the mill is dictated by way of the raw material being processed, for example one speed maybe suitable for straw but not wood. There is more on this within the guide.

Read more about Pellet Fuel

Renewable fuel is one of the key sectors where the use of ring die pellet mills has grown rapidly. Large scale wood pellet manufacture predominately uses ring die pellet mills in their set-up. The wood pellet market is mounting at a consistent rate owing to the fact that biomass pellets are a renewable form of fuel. Alternative in the sense the biomass resources can be replaced within a reasonable cycle. Other wood resources can also be processed into fuel pellets, including agricultural resources such as straw. Through growing popularity of the biomass pellet market, as well as the fact wood pellets can be manufactured from local resources on both a small and large scale, more people are looking into how wood pellets are manufactured.

For more information on Straw Pellet