How to Identify the Quality of Biomass PelletsNowadays the biomass pellet manufacturing industry booms, so unavoidably there are sellers who sell bad quality pellets at best quality prices, which greatly harms customer’s interests. However, for most pellet users, they only keep in mind that the higher price it is, the better quality pellets have.
As a result, here we’d like to teach you on how to identify pellets quality.
The raw material for biomass pellets making varies from wood sawdust, stalk, peanut shell, cotton stalk, corn stalk and straw, to household garbage. While wood pellets have the highest combustion value, then are stalk pellets, and household garbage pellets are the worst.
We’d like to use the methods in traditional Chinese medicine to judge biomass pellets quality.
See: It means to observe pellets color, glossiness, purity and the ash left after burning. Good quality pellets have high glossiness, while garbage pellets do not shine.
The color of wood pellets or stalk pellets is always light yellow or brown, while garbage pellets are black.
Purity means the pellet forming conditions. The better forming conditions there are, the longer pellets will be, and less broken is. The less ash left after burning means the more purified pellets are.
The ash content of pure wood pellets is just 1%, which is the least among biomass pellets. Stalk pellets have higher ash content, while garbage pellets have the highest ash content, which is 30%. Besides, to decrease production cost, some manufacturers even add lime or talcum powder in the raw material. Such kind of pellets ash will be white after burning.
Smell: The biomass pellets manufacturing in fact does not need any binder or additive, so most pellets will remain the smell of its raw material. For example, wood pellets have the smell of natural wood; stalk pellets have the smell of stalk, while garbage pellets have unpleasant smell.
Touch: Means to touch the pellets by your hand and feel about them. if the pellets are smooth hard and no cracks, such kind of pellets are good; if they are not smooth, have cracks and can break easily when squeezed by 2 fingers, such pellets are not good.
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