How does a briquette machine work – types and making process
There are several types of briquette machines with different working principles, they work on different pressures and suitable for different materials. So how they work differently? What are there advantage and disadvantages? Let’s follow the article.
What is a briquette machine
A briquette machine is used to turn the waste powder to a regular shape block, which can help to improve the conditions for those powder, make them easy for transportation, storage, and more useful for further usage.
The briquette system is able to deal with all kinds of materials with suitable size and moisture.
Briquetting work always work with the binder as it needs the binding effect to get enough strength for the finished briquette. Biomass and industrial waste are different from each other due to their binder sources.
Types of briquette machines and how they work
The screw type briquette machine uses the auger to press the raw material, with different materials, it can be equipped with or without the heating system to output briquettes.
The heating system is a special design for those briquetters deal with materials contain lignin, lignin alway can be found on biomass. So the heating system is usually used for biomass briquetting. Other materials like coal, charcoal, etc. Binders are always needed when briquetting with the screw type briquette machine.
The suitable material is fed to the hopper and then conveyed by the screw inside the briquette machine. the rotating screw takes the material from the feed port, and compacts it against a die which assists the build-up of a pressure gradient along the screw.
Finished briquette output from the end with stick type. Normal cross-section shapes we usually find can be square, round, plum blossom, etc.
As the screw briquette machine works with a pressure not that high, binders are always needed forming the briquette. Equip with a heating system will help the biomass material melt the internal lignin and turn it to a high-performance binder. Besides, other materials also work with this briquetter like coal, charcoal, etc. These materials should be well mixed with the binder to get the briquette forms.
Hydraulic type works with a hydraulic pump station which supplies a very big pressure. Because of its high pressure, almost all the materials can be briquette with this system.
Metal, as a raw material that reflects plasticity under high pressure, is specially suitable to be briquette by the hydraulic type briquette machine.
The briquette working process is in a chamber where materials are fed into, there materials are briquetting under a very high pressure. It causes their plasticity and makes them binding stably together as a block.
Hydraulic type takes a long pressure keeping time on the briquette, this prevents the short-time material deformation rebound and will cause a special heating for those materials like sawdust for melting its internal lignin, make the briquette with higher strength.
The piston type uses the rotary power of the mechanical device or the thrust of the hydraulic cylinder to reciprocate the piston (or the plunger), and the piston (or plunger) drives the ram to reciprocate in the forming sleeve to generate a pressing force to form the material to briquette.
A big pressure will be generated as the movement of the flywheel and punch the briquette time after time in a short time, it raises the temperature of the raw material. As the raw material moves, it fractionates with the inside, another kind of heat – friction heat generates. With the action of these two kinds of heat, material raises its own temperature to a high level and melt the lignin. Particle materials then bind together and become strong enough.
The honeycomb briquette machine is a simple type of piston briquette machine, it uses the wheel as well but briquette only punched once to form.
Roller press works with two close rotating rollers at the same speed but with opposite direction. The two rollers, with the same width and diameter, have holes on the surface. When they move, the same two holes on the different roller will coincide at the intersection of the midline and the briquette will be pressed there.
With different pressure requirement, roller press can be designed to several types.
A normal roller press will use a wedge iron to fix the movable roller as it works on a low pressure. The hydraulic pump station is also can be used to fix the roller and supplies a much bigger but flexible support to the roller to work stable on big pressure.
With the consideration of investment and facility requirement, choose the right type will help to make the briquette business much efficient and make briquette with high quality.