Water requirements are strict
The moisture content of raw materials for sawdust pellets is very stringent. No matter which kind of sawdust, the moisture content must be kept within a range (preferably between 14% and 20%). It is too dry to form, and the moisture is large and loose.
Material's own adhesion
The raw materials themselves must have adhesive strength. If not, then the product pressed by the wood pellet mill is either not shaped or loose and easily broken. Therefore, if you see particles that are not adhesive in nature and can be pressed into granules or pieces, the ingredients must be moved by hand, or be fermented or added with an adhesive or the like.
The use of pure sawdust for the production of sawdust pellets is not necessary, since it is a crude fiber raw material with inherent adhesiveness. After the compression of wood chips, it will naturally form and it will be very solid. The pellet machine pressure is very large.
Can different types of sawdust be mixed?
It is said that the use of pure sawdust does not prevent the doping of other types of sawdust. All kinds of wood sawdust, sawdust, mahogany, and poplar can all be used. Abandoned scraps from furniture factories can also be used. More broadly speaking, such as crop stalks, peanut shells, these things can be used as raw materials for wood pellet mills. Of course, the pellets that can be made can't be called wood pellets but straw pellets.
The size of raw materials after smashing
Sawdust, branches and other raw materials must be crushed by the grinder to granulate, the size of the smashing should be determined according to the size of the expected particle diameter and the size of the particle machine mold. Too large and small smash will affect the output and even cause no discharge.
How to do raw material mildew?
The raw material is mildewed and the color becomes black. The cellulose in the wood chips is decomposed by microorganisms and cannot be pressed into qualified granules. If non-use is not allowed, it is recommended to add more than 50% of fresh wood chips raw materials mixed, otherwise it can not be pressed into qualified granules.