The term derives from the French word brick which means brick. Wood briquettes consist of dry, untreated wood chips (eg wood chips). They are pressed at high pressure without any binder. By compressing the wood with this high pressure, it is transformed into a lignite-like fuel. Buy Small Scale IndustrieS merchandise.Briquettes are a form of solid biofuel that can be burned for energy made from biomass resources including agricultural residues (Figure 2). They are made of different qualities and dimensions depending on the raw materials, mold and technologies applied during production.