A briquette-making press machine compresses loose biomass or other materials into dense, solid briquettes that can be used as fuel. The exact operation depends on the machine type (manual, piston press, hydraulic press, screw extruder, etc.), but the basic process is similar.
How a Briquette Press Works
- Prepare the Raw Material
- Common materials: sawdust, rice husk, groundnut shells, wood chips, agricultural waste, charcoal fines, paper waste.
- Dry the material to the recommended moisture content (often around 8–15%, depending on the machine and material).
- Remove stones, metal, and other contaminants.
- Size Reduction
- Grind or shred the material if necessary.
- Most machines work best with small, uniform particles.
- Feed the Material
- Load the prepared material into the hopper.
- The feeding system moves material into the compression chamber.
- Compression
- A piston, hydraulic ram, or screw mechanism applies high pressure.
- The pressure binds particles together. Some machines rely solely on pressure, while others may require a binder (such as starch or clay).
- Briquette Formation
- The compressed material passes through a die.
- The die determines the briquette’s shape (cylindrical, square, hexagonal, etc.).
- Cooling and Drying
- Fresh briquettes may be hot or slightly soft.
- Allow them to cool and dry before storage or use.
