Legume Straw Pelletizer

Brief Introduction

The legume straw pellet mill is a forming equipment designed for legume forage and straw such as alfalfa, peanut vines, soybean straw, alfalfa, sweet clover, and ryegrass. It can process loose, high-fiber legume straw into pelleted feed or biomass pellets, suitable for farms, feed processing plants, forage cooperatives, biomass fuel plants, and comprehensive straw utilization projects. The legume straw pellet mill primarily addresses the problems of large volume, low density, easy scattering, and high storage and transportation costs associated with legume straw. The equipment uses crushing, moisture conditioning, extrusion, and forming processes to compress raw materials such as alfalfa, peanut vines, and soybean straw into uniformly sized, high-density pellets that are easy to store for long periods.

A common type of legume straw pellet mill is the ring die pellet mill. Ring die mills offer higher output and more stable pellet formation, making them suitable for continuous production. Legume straw pellet mills can be used as standalone units or integrated with crushers, dryers, coolers, vibrating screens, packaging machines, and dust collection systems to form a complete legume straw pellet production line.

Working Principle

When a legume straw pellet mill is working, it first crushes or shreds raw materials such as alfalfa, peanut vines, and soybean straw to a suitable particle size, and then adjusts the moisture content according to the intended use of the pellets. For feed pellets, the moisture content usually needs to be controlled within a suitable pelleting range; for fuel pellets, the moisture content generally needs to be reduced before entering the pelleting machine.

After the material enters the pelleting chamber, it is subjected to compression and friction between the pressure rollers and the die, causing the temperature to rise. The lignin in the straw softens and creates a binding effect, forcing the material into the die holes to form the pellets. The formed legume straw pellets are then cut by a cutter, cooled, sieved, and packaged to become the finished product. Legume straw pellet mills typically use a physical forming method and generally do not require the addition of additional chemical binders.

Main Parts

TONY'sLegume Straw Pelletizer

Main Spare Parts

Parameter

Suitable Raw Materials

Legume straw pellet mills can process various legume forages, straws, and agricultural and forestry by-products. Common raw materials include:

1.Alfalfa, clover, sweet clover, ryegrass, and other legume forages;

2.Peanut vines, soybean straw, pea stalks, broad bean straw, red bean straw, and other legume straws;

3.Crop straws such as corn stalks, wheat straw, rice straw, wheat straw, and cotton stalks;

4.Agricultural by-products such as rice husks, peanut shells, corn cobs, and sunflower seed shells;

5.Forestry residues such as sawdust, branches, and shavings; and some mixed feed ingredients, which can be adjusted according to feed formulations or fuel requirements.

Application Areas

Legume straw pellet mills produce pellets primarily used in the following areas:

1.Livestock and Poultry Feed: Alfalfa pellets, peanut vine pellets, and soybean straw pellets can be used to feed ruminants such as cattle, sheep, rabbits, and deer, as well as poultry, improving palatability and feeding efficiency.

2.Forage Processing:Used for processing forage pellets, hay powder pellets, and mixed feed pellets, facilitating the storage, transportation, and sale of forage products.

3.Biomass Fuel:Legume straw pellets can be used for home heating, cooking, boiler heating, drying equipment, and biomass power generation.

4.Organic Fertilizer and Substrate Raw Materials:Pellet products can be used as raw materials for processing organic fertilizers, cultivation substrates, and edible fungi substrates.

5.Bedding and Storage Products:High pellet density and small volume facilitate packaging, storage, and long-distance transportation; also suitable for use as bedding in livestock and poultry pens.

Details

1. HUIXIN Gearbox: Heavy-duty HUIXIN gearbox provides adaptive torque to cope with variable resistance of flexible legume straw fibers and pod debris.

2. Rotating bracket: Reinforced construction reduces vibration when straw feeds are low-density and uneven.

3. Reducer: Precision matched reducer ensures stable power transmission while handling easily tangled legume straw strands.

4. 304 Stainless Steel Dust Cover:Unlike painted carbon steel, this 304 stainless steel dust housing resists abrasion and mild corrosion from grass ash and coarse fiber dust.

5. Internal lifting knife: Built-in internal lifting knife cuts tangled fiber clumps and prevents bridging inside the pelletizing cavity.

6. Adjustable blades: Adjustable blades calibrate feed thickness to suit the lightweight, branch-rich fibrous features of dried legume straw.

Unique Advantages

1. Machine assembly: General-purpose ring die and roller gap optimized for legume straw fiber, reducing winding and feed blockage.

2. HUIXIN gearbox: Tuned HUIXIN gearbox with excellent anti-fluctuation performance, adapting better to mixed and unstable legume straw raw materials.

3. Stainless dust cover:  The integrated dust cover adopts 304 stainless steel material instead of painted carbon steel. The upgraded structure possesses excellent wear resistance and satisfactory tolerance to weak acid corrosion.

4. Bottom feeding reducer: Improved under-feed reducer prevents legume straw fiber from arching and jamming the feed inlet.

5. Cooling system: Gentle circulating air cooling reduces pellet fragility, lowering breakage and powder rate of lightweight legume straw pellets.