Science Fair Project Encyclopedia
Some briquettes are compressed and dried brown coal (lignite) extruded into hard blocks. This is a common technique for low rank coals. They are typically dried to 12-18% moisture, and are primarily used in household and industry.
In Ireland, peat briquettes are a common type of solid fuel after coal. Although often used as the sole fuel for a fire, they are also used to begin a coal fire quickly without hassle. A fire burning peat briquettes is, similarly to a turf fire, slow burning. Peat briquettes can be used as an acceptable substitute for charcoal in barbecues for this reason.
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