Dry Straw Pelletizer

Brief Introduction

Dry straw pelletizers are biomass ring die pelleting equipment specifically designed for dry straw materials. They eliminate the need for additional drying and can directly extrude dry straw into high-density biomass pellets. The equipment operates stably and is suitable for agricultural and forestry waste resource utilization projects. It is widely used in straw fuel pellet production lines and can be equipped with feeding, screening, and cooling equipment to form a complete straw pellet production line. Customized complete straw pellet solutions are also supported.

Processing Technology

Core Equipment IsDry Straw Pelletizer

Dry straw raw materials are crushed and screened to remove impurities → conveyed to dry straw pelletizer → extruded by ring die pressure roller → discharged pellets are cooled and cooled → finished product is screened to remove powder → biomass pellets are packaged and stored. The whole process is adapted to dry material pelleting process, eliminating the wet material drying process and reducing the energy consumption of straw pellet production.

Main Parts

TONY's dry straw pelletizer

Main Spare Parts

Parameter

Suitable Raw Materials

It can be used for various dried crop straws such as corn stalks, wheat stalks, rice stalks, peanut vines, and soybean stalks; it is also compatible with low-moisture biomass raw materials such as hay, wood chips, branches, and rice husks. The raw material moisture content can be controlled at 10%-15% for direct pelleting.

Application Areas

1. Biomass fuel industry: Straw pellets are used as boiler fuel and biomass heating fuel, replacing coal;

2. Livestock farming industry: Straw feed pellets are processed for feeding cattle and sheep;

3. Straw resource utilization projects: Farmland straw is recycled and reused to solve the problem of straw burning;

4. Biomass energy plants, cooperatives, and individual processing plants build straw pellet processing production lines.

Details

1.This pellet mill adopts tailor‑made Zhejiang HUIXIN gearbox co‑branded with TONY. Internal gears are enlarged and thickened alongside reinforced gear shaft to realize outstanding heavy‑duty performance. Key parts contacting steam‑rich working environment including feed inlet, discharge housing, dust collection hood, lifting knife and internal cutting knife are built from 304 stainless steel, which effectively resists steam‑triggered rust and corrosion for extended service life.

2.Equipped with HUIXIN hard‑tooth‑surface reducer installed underneath discharge housing, the machine generates larger torque and stable rotary force while cutting component damage risk. The upper discharge housing is constructed of 304 stainless‑steel with arc profile; this design avoids welding‑related cracking risk with great tensile strength and prevents accidental operator injuries.

3.We adopt re‑engineered rotary support mounted under discharge housing instead of conventional top‑mounted solution. Such modification keeps assembly away from upper‑chamber steam corrosion and overcomes common troubles such as rust and premature wear of inner steel balls. The thickened stainless‑steel lifting knife can withstand high‑temperature steam conditions, realizing effective material turnover and avoiding raw‑material accumulation inside pelletizing cavity. Besides, inner cutting knife supports flexible adjustment; users can alter cutter extension to obtain target pellet lengths with convenient operations.

Unique Advantages

1. Strong Corrosion Resistance:304 stainless steel remains rust-free even under high-temperature and high-humidity granulation conditions, while 201 stainless steel may rust within months, affecting equipment lifespan and material cleanliness.

2. Durable Structural Strength: 304 stainless steel has good toughness and is not easily brittle, while 201 stainless steel is hard and brittle, prone to micro-cracks. Under long-term high-load operation, the 304 casing is less likely to deform or be damaged.

3. Low Maintenance Costs:The 304 casing generally requires no replacement or repair due to rust, while the 201 casing may require frequent rust removal or premature replacement in humid areas.

4. Wideer Range of Applications: 304 models can cover various fields such as biomass fuel, livestock feed, traditional Chinese medicine pellets, and food pelleting; 201 models are only suitable for ordinary fuel pelleting in dry environments.