Normally no explicit binder is added in the pellet production process. When the sawdust is compressed into pellets, under the influence of the high pressure and temperature, natural dust is released from the wood called “lignin”. (About 25 to 33 percent of the mass of dried wood consists of lignin, according to Wikipedia).
Under the influence of this substance, the sawdust sticks together, and thus forms a natural binder.
The pellet remains pure wood all the better for everyone, and so we know much better what we burn in our boilers with best pellet smoker under $500.
However, I recently read that some pellet producers add starch (“starches”) to their pellets. This would have the advantage that the pellets become smoother and less fragile, and more resistant to moisture.
These things have the advantage that they crumble less during the production and storage process, where the starch improves their “flowability” (literally translated from “flowability”, I don’t really find a better translation). In other words, when the pellets are produced and stored in metal machines and silos, there would be less dust. And so also during transport to our bags.
Here you can find a paper on the subject, where some researchers discuss the effects of adding wheat starch to sawdust from firwood for pellet production, and explain the test methods.
It all goes a bit far, but if you want to delve deeper you can start there.
Now I have no idea what adding starch to your incineration. I cannot immediately imagine that there are some disadvantages to it such as toxic fumes, it is ultimately just starch. Although by nature I am a little more for the ‘pure nature’ lignin 🙂
Possibly further research will bring some extra clarity.
This is a slightly less consumer-focused post than my previous ones, but I found it fascinating to hear so I can write about it anyway 🙂
During my Internet surfing sessions I came across an article that spoke about adding starch to pellets the binding process. This would make the pellets stronger and ensure that they release less dust.