Pellets are a compacted for of an previous raw material. The raw material in question maybe a potential resource used for energy, animal feed or perhaps some other use. Whatever the end use of the pellets created, the end effect has similar characteristics. Under powerful heat and pressure the raw material is formed into the pellet form. In a pellet mill a set of rollers compact the raw material through the holes in a die. As this takes place, and temperatures increase which essentially melts the raw matter, and this is what enables it to acquire the pellet shape. Once the pellet exits the pellet mill is should have a smooth surface shine. Once the pellets cool, they ought to also have a high-quality density and hold their shape. When the pellets do break, if they are of adequate quality they should fracture cleanly, generating very little fines and dust. Good pellet solidity is essential for moving, and especially for fuel pellets their end use. Poor condition pellets during burning will break apart. This will have a negative effect on burning efficiency, which will make unnecessary smoke, reduce temperature generated and make more ash. To produce quality pellets several factors have to be proscribed. One of the key factors is raw material moisture content. Some moisture is required for the pellet mill to melt the raw substance and to lubricate the procedure. However too much moisture and pellet compression is not probable. Keeping the percentage of moisture to an absolute minimum is also essentially for combustion efficiency. For a fuel to burn efficiently, low levels of moisture are required, as high levels of moisture stop the fire reaching high combustion temperatures. This is why pellet stoves are so a large amount more efficient than log stoves. Typically seasoned logs are around 30%, where pellets are below 10% moisture. Pellets also have a much superior density than logs. These two factors are central to the increased incineration efficiency of pellets.

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A mixture of raw resources can be compressed into pellets in the pellet mill. One of the most general materials for fuel pellet production is obviously wood. Depending on the rating of pellet fuel, the selected type of wood raw substance changes. For example the premium wood pellet fuel market create pellets with an ash matter below 1%. This is only possible through highly choosy wood resources, which contain no bark. However though this is noticeably only a small selection of available resources.

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Biomass is a generally term used to explain any organic matter which can be used as a fuel source. Almost all biomass assets can be processed into pellets in a pellet mill.

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