Sawdust briquette machine is a screw-type extrusion press used to produce briquettes as fuel from biomass materials. It is one of the primary machines used in producing bio-charcoal briquettes. It is also called a biomass briquette press or a machine-made charcoal machine.
Structure of the sawdust briquette machine
The sawdust briquette machine mainly consists of a motor, an electrical control cabinet, pulleys, a screw propeller, a main working body, a mold, and heating elements.
The principle of making briquettes from sawdust
The core principle is to utilize the plasticizing properties of lignin at high temperatures to bind cellulose together and form a briquette. Sawdust mainly contains cellulose and lignin. The screw proeller and heating coil of the sawdust briquetting machine create high-temperature, high-pressure conditions during working. The lignin softens under heat and acts as a binder, tightly binding the loose sawdust together. The sawdust, propelled by the high pressure of the high-speed rotating propeller, passes through the mold, ultimately forming dense, rod-shaped briquettes.
Common biomass materials for making briquettes
Based on the above principle of sawdust briquetting, we should easily understand that only raw materials rich in lignin and cellulose can be processed into briquettes by a screw-type briquette machine. Common biomass materials for producing briquettes include sawdust, wood shavings, rice husks, bamboo scraps, and nut shells.
Required size and humidity of the materials for making briquettes
The material size should be less than 5mm, and the moisture content should be less than 12%. To meet these requirements, you can choose a wood crusher and a sawdust dryer to process the raw materials before making briquettes.
How to operate the sawdust briquette machine
First, set the temperature of the sawdust briquette machine to 280℃. After the temperature rises to 280℃, begin to feed materials into the sawdust briquette machine. Sawdust is pushed by the rotating screw forward to the end of the mold. Under high temperatures and high pressure, sawdust forms into briquettes and is expelled from the mold. The briquette producer needs to adjust the temperature according to the quality of the briquettes to get the ideal wood briquettes.
The shape and size of sawdust briquettes
The mold determines the shape and diameter of sawdust briquettes.
Common shapes of sawdust briquettes include square and hexagonal. The common diameter of the sawdust briquettes is around 50mm and 70mm.
If you want to carbonize the sawdust briquettes into charcoal, the mold with a 50mm diameter is the best. All the briquettes produced by the sawdust briquette machine have a hole in the core, which enhances the combustion efficiency.
Regarding the length of the wooden rods, our standard configuration includes a simple breaking device that causes the rod to snap automatically once it reaches a specific length.
If you wish to maintain the rod’s straight form—or require greater precision in cutting it to length—this can be achieved using a circular cutter.
Advantages of sawdust briquettes
1. Wood sawdust briquettes can be used as fuel for burning directly. Compared with natural wood, it has a higher density and heating value.
2. The sawdust briquette machine can use residual wood and agro-waste to produce briquettes, and these wood briquettes can be carbonized into charcoal. It changes the traditional way of making charcoal from lump wood, helping reduce tree felling.
3. Compared with natural timber charcoal, sawdust briquette charcoal has a higher heating value and longer burning time.
Diesel-powered sawdust briquette machine
For customers in areas without electricity, we have developed a diesel-powered sawdust briquette machine.
Consumable parts of sawdust briquette machine
Spiral propeller
Driven by the pulley, the spiral propelling shaft continuously transports the material to the front outlet, and gradually increases the pressure on the material to extrude the material into shaped briquettes. Therefore, the front section of the propeller has the greatest friction with the material and is also the most susceptible to wear. Our screw propeller shaft is made of Cr40 steel, which has a good balance between the toughness and wear resistance of the propeller shaft. The front section of the spiral is overlayed with tungsten carbide electrodes to further increase wear resistance.
Heating elements
As mentioned earlier, sawdust is rich in lignin. Lignin is sticky under high-temperature conditions and helps to shape the sawdust. The heating temperature setting varies according to the material. If the raw material is wood sawdust, the temperature is generally set to 280° first and then adjusted to the optimal temperature according to the quality of the sawdust briquettes.
Molding sleeve
Molding sleeves are available in two shapes, square and hexagonal. The most popular size now is 5cm in diameter. After conducting a large number of tests and production practices, it has been proven that sawdust briquettes produced using 5cm molding sleeves have the highest quality.
Technical parameters of the sawdust briquette machine
| Model | Power | Capacity | Sawdust briquette diameter | Sawdust briquette shape | Feature |
|---|---|---|---|---|---|
| ZBJ-I | 18.5kW | 200-300 kg/h | 50mm | Hexagonal and Square | Basic model, low energy consumption, affordable price |
| ZBJ-II | 22kW | 300-400 kg/h | 50mm/70mm | Hexagonal and Square | Enlarged bearing housing and motor; more stable operation; higher output. |
FAQ for sawdust briquetting
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Sawdust Briquette Machine: High-Density Biomass Fuel Extruder
Sawdust briquette machine is also named biomss briquette press, it produces briquettes as fuel from wood waste, rice husk, argo waste, etc biomass materials.
Product SKU: ZBJ-I
Product Brand: Belong Machinery
Product Currency: USD
Product Price: 3200
Product In-Stock: InStock
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