does it relate to the fiber decomposition during carbonization process?
The binder coats the particle of the raw material like a film. After briquette and dried, it will increase the strength of the briquette. It uses the surface tension to pull the material together.
Addition of binders consolidates and improves the binding and brings the carbonized particles together into a unit and enhances the strength of the briquettes.
Agree with all the answers above. It serves like a glue. To add further, without the binder, from the business point of view, the producer also cannot properly shape the briquette. Consequently the producer may face difficulty to make it looks good; and also difficult to pack, store and sell it.
Although the answers above are correct, you may not need a binder with your source of carbonized biomass. If your briquettes hold form during production, transportation, and into use which is the goal, why would you need another binder? You may have adequate remaining starch, moisture, differences in pressure substrates, the proper chemical combination, or other factor for your briquettes. You may also want to review websites like this https://briquettesolution.com/all-about-binders-make-briquette-with-proper-binder/.
Carbonized biomass needs to be mixed with binder when making briquettes because during carbonization process, most of the lignin that can act as natural binder already decomposed. The thermal decomposition of lignin occurs within the temperature range of carbonization. Thank you.
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