Rice Straw Pelletizer

Brief Introduction

The Rice Straw Pelletizer is a high-efficiency forming device specifically designed for biomass energy development. It transforms agricultural and forestry waste such as straw and stalks into high-density, high-calorific-value biomass pellet fuel through a high-pressure, low-temperature compression process. This equipment employs advanced ring die pelleting technology, requiring no chemical additives or binders. It relies entirely on the softening and binding properties of the material's own lignin under high temperature and pressure to achieve pelleting, making it an ideal choice for environmental protection, energy conservation, and turning waste into treasure.

Processing Technology

Core Equipment Is Rice Straw Pellet Pelletizer

Raw material processing: Unpacking and coarsely chopping the straw bales, removing stones, nails, and other impurities.

Grinding: Grinding to 2-5mm powder.

Drying: Adjusting moisture content to 12-15%; this step can be omitted for dry straw.

Pelletizing: Extruding using a vertical ring die pellet mill.

Cooling: Cooling to harden the pellets.

Sieving: Removing broken powder; recycling the powder.

Packaging: Bagging and storing the finished product.

Main Parts

TONY's Rice Straw Pelletizer

Main Spare Parts

Parameter

Suitable Raw Materials

This equipment has wide adaptability to raw materials and can process a variety of agricultural and forestry wastes and biomass materials: Raw Material Categories Specific Raw Materials Crop straw, rice straw, wheat straw, corn straw, cotton straw, soybean straw, rice straw, etc. Agricultural and forestry waste Branches, leaves, bamboo shavings, fruit wood chips, hollow palm fruit bunches, etc. Processing By-products Rice husks, rice husks, peanut shells, sunflower husks, sawdust, wood powder, wood chips, sawdust, etc. Other Biomass Forage, waste paper, carbon powder, etc.

Application Areas

Biomass pellet fuel produced by straw pellet mills has a wide range of applications:

1. Industrial Thermal Energy:

Boiler fuel (replacing fossil fuels such as coal and oil)

Industrial heat source for metallurgy, chemical, and rubber product factories

Biomass power generation in power plants

2. Commercial Services:

Heating and hot water supply for hotels and restaurants

Commercial establishments such as bath centers and food factories

3. Residential Use:

Residential heating fuel

Clean energy alternative for rural households

4. Other Applications:

Feed processing (some pellets can be used as animal feed)

Organic fertilizer (the ash after combustion is high-quality organic potassium fertilizer)

Multi-purpose development such as substrate and raw material processing

Details

1.Custom‑Spec Gear Box

Equipped with tailor‑made HUIXIN gearbox co‑branded with TONY. Enlarged & thickened internal gears plus reinforced gear shaft deliver outstanding heavy‑load performance for continuous pelletizing operations.

2.304 Stainless‑Steel Construction for Key Components

Critical wetted parts including feed inlet, upper discharge housing, dust hood, lifting knife and inner cutting knife adopt 304 stainless steel material. It offers superior resistance against steam‑induced corrosion and rust, greatly extending machine service life under high‑humid pelletizing conditions.

3.Bottom‑Mounted HUIXIN Hardened Reducer

The heavy‑duty hard‑tooth‑surface reducer from HUIXIN is arranged beneath discharge housing. This layout boosts output torque, delivers stable power transmission and lowers component failure risks.

4.Optimized Upper Discharge Housing

Fabricated from 304 stainless steel with arc‑shaped profile. It eliminates cracking risks caused by welding stress, features high tensile strength for long‑term service, while curved surface prevents accidental operator injuries.

5.Upgraded Bottom‑Placed Rotary Support

Redesigned rotary support is mounted under discharge housing rather than traditional top‑side installation. This structural change keeps it away from top‑section steam erosion, resolving common issues like rust and premature failure of inner steel balls.

6.Thickened Stainless‑Steel Lifting Knife

Heavy‑gauge 304 lifting knife withstands high temperature and steam corrosion. It achieves efficient material stirring & conveying, effectively stopping raw material caking and accumulation inside the pelletizing chamber.

7.Adjustable Inner Cutting Knife

Inner cutting knife supports flexible position adjustment. Operators can modify cutting projection to obtain desired pellet lengths, featuring simple setup and convenient on‑site tuning.

Unique Advantages

TONY 185KW Pellet Mill with 304SS Key Parts VS Competitors’ 201SS Models

1. Resistant to Steam Corrosion, Less Prone to Pitting and Rusting

Competitors using 201 stainless steel (low nickel, high manganese) are prone to passivation film damage in high-temperature steam and biomass organic acid environments. After a few months of operation, the discharge shell, dust hood, and lifting blades will yellow and develop pitting corrosion, with weld seams showing preferential corrosion.

This machine's inlet, discharge shell, dust hood, lifting blades, and internal cutter are all made of 304 stainless steel. With sufficient nickel content, the passivation film is stable, making it less prone to rusting even after long-term exposure to humid steam and straw organic acids. It is suitable for straw and rice straw production lines with steam conditioning, significantly extending the overall machine lifespan.

2. Stronger Crack Resistance at Welds, Enhanced Structural Stability

201 stainless steel has a high risk of intergranular corrosion after welding, and micro-cracks easily form at weld seams. Long-term vibration and high temperatures greatly increase the risk of shell cracking.

304 stainless steel has better toughness. The arc-shaped integrated structure of the upper discharge shell releases welding stress, provides high tensile strength, reduces shell cracking and powder leakage, and lowers the frequency of downtime for maintenance.