Rice Straw Pellet Machine

Rice Straw Pellet Machine For Sale

• Capacity :2.5-4.5T/h
• Ring mold size: 608mm/768mm
• Main motor :180kw /220kw
• Moisture : 12%-15%
• Application :Rice Straw Pellet Machine are used to compress agricultural and forestry processing waste such as wood chips, straw, rice husks, bark, etc. into high-density pellet fuel.

A rice straw pellet machine is a piece of specialized equipment designed to process straw (a common agricultural byproduct) into dense, cylindrical pellets. By applying high pressure and high temperature, the machine compresses loose, bulky straw—which is otherwise difficult to store and transport—into a compact, uniform, and easy-to-handle pellet form.

This transformation goes beyond the traditional uses of straw (such as animal bedding or open-field burning) and expands its value into two high-value applications:

• As a sustainable biomass fuel for various heating and thermal energy applications, offering an eco-friendly alternative to fossil fuels.

• As a high-fiber nutritional supplement in animal feed, improving livestock nutrient intake.

In addition, the straw pellet machine plays a significant role in agricultural waste management. Straw is often considered a disposal problem for farmers, and open burning—a common practice—releases harmful gases into the atmosphere, negatively impacting air quality and contributing to smog. By converting this residual material into pellets, the machine helps mitigate these environmental issues, turning waste into a valuable resource while reducing harmful emissions and promoting cleaner air.

Wood raw materials: including sawdust, shavings, bark, branches, waste furniture scraps, building templates, etc. produced by processing wood such as pine, poplar, and fir. This type of raw material needs to be crushed and screened to ensure that the particle diameter is controlled at about 6 mm and the moisture content is maintained at 10%-15%.

Crop straw: corn straw, wheat straw, straw, rice husk, peanut shell, cotton stalk and other agricultural waste are also common raw materials.

Other waste: such as cloth strips and waste paper in urban garbage, sanding powder in forestry waste, as well as medicinal residues, mushroom residues, etc.

1.The horizontal ring die biomass pellet machine is a high-capacity, industrial-grade wood pellet machine that can produce pellets from a variety of biomass raw materials.

2.The horizontal ring die biomass wood pellet machine uses horizontally placed dies and rollers to achieve continuous and efficient pellet production with excellent compression and durability, with an output of up to 4.5 tons/hour.

3.Large wood production lines usually use multiple ring die pellet machines for joint production. This type of wood pellet machine is the ultimate choice for large-scale industrial-scale biomass pellet production.

4.It is widely used in large biomass pellet plants and commercial biomass pellet manufacturing companies.

1. Separating Rice Straw From Foreign Materials
Straw may contain far more foreign materials than sawdust, thus it is important to separate the rice straw from the foreign objects.

2. Grinding of Rice Straw
The size of the rice straw before sending it into the feeder of the rice straw pellet mill should be reduced to a uniform size of less than 5mm by a hammer mill.

3. Drying of Rice Straw
Generally speaking, rice straw is often air-dried, with a moisture content of typically 15%. So the drying of rice straw is unnecessary. However, if the moisture content of your rice straw is higher than 15%, drying with a rotary drum dryer is necessary.

4. Pelleting in Rice Straw Pellet Machine
After grinding and drying, the materials are transported into the rice straw pellet machine by conveyor. Under the pressure between the die and roller, the rice straw pellets are extruded out and cut into the desired length. The common size for rice straw fuel pellets is 6mm and 8mm.

5. Cooling of Rice Straw Pellets
In order to maintain the quality of pellets during storage and handling, the extruded pellets with high temperatures should be air quenched down to room temperature or a little higher by the counter flow pellets cooling machine.

Increased bulk density: The densification process increases the bulk density from about 80-150 kg/m³ to 600-700 kg/m³, which reduces transportation costs and storage volume.

Lower moisture content: The moisture content of the pellets is usually less than 10%, which is beneficial for long-term storage and reduces product losses.

Higher energy efficiency: The pellets have a more uniform composition, resulting in higher energy efficiency and lower emissions when burned, which is more advantageous than raw rice straw.

A complete biomass pellet  production line includes crushing, drying, pelletizing, and packaging units. 

1. Crushing: Wood blocks, wood chips, or other wood materials are uniformly crushed. This can be done using a wood crusher or shredder to reduce the size of the wood into smaller pieces.
2. Drying: The crushed wood material is then fed into a drying machine drum through a conveyor belt. The drying process quickly reduces the moisture content of the material to around 12% to 15%. This is important for ensuring the quality of the final wood pellets.
3. Pelletizing: Once the wood material is dried, it is then fed into a pellet mill. The pellet mill compresses the material under high pressure and heat, forming it into small cylindrical pellets. The pellets are then extruded from the pellet mill.
4. Packaging: The pellets are discharged from the pellet mill and can be directly connected to a conveyor belt that leads to an automatic packaging machine. The packaging machine packages the pellets into bags