Rice Husk Wood Shavings Mixed Pellet Mill

Brief Introduction

The rice husk and wood shavings pellet mill is a specialized biomass pelletizing equipment developed to address the significant differences in the physical properties of rice husks and sawdust. Rice husks have a high silica content and are highly abrasive, while sawdust fibers are long and have good binding properties. When these two materials are mixed, ordinary pellet mills are prone to problems such as pelleting fluctuations, rapid die wear, and unstable output. The rice husk and sawdust pellet mill is equipped with an adjustable compression ratio die, wear-resistant forming components, and a forced feeding device, making it suitable for pelleting rice husk and sawdust mixtures with different ratios. This mill can process rice husks and sawdust from agricultural and forestry processing into high-density, stable-quality biomass pellets, suitable for rice mills, wood processing plants, biomass fuel processing plants, and solid waste recycling companies, achieving the co-resource utilization of these two types of agricultural and forestry waste.

Working Principle

The rice husk and sawdust pellet mill adopts a purely physical high-pressure extrusion molding process, requiring no binder during production. After crushing, screening, and moisture conditioning, the rice husk and sawdust mixture is fed into the pellet mill's hopper. A forced feeding mechanism smoothly transports the mixture to the molding cavity. Pressure rollers continuously crush and extrude the mixture, and the heat generated by friction activates the lignin within the material. The binding effect of the sawdust fibers compensates for any deficiencies in the rice husk's shape. Under high pressure, the material is extruded through the die orifice, cut to a fixed length by a cutter, and cooled to obtain regular finished pellets. The entire process is automated and supports continuous production of materials with different blending ratios.

Main Parts

TONY's Rice Husk Wood Shavings Mixed Pellet Mill

Main Spare Parts

Parameter

Suitable Raw Materials

The rice husk and sawdust pellet mill mainly processes mixtures of rice husks with sawdust, wood shavings, and fine wood chips, supporting flexible mixing ratios. It can also process rice husks or various types of wood chips alone, and can also mix small amounts of rice husks, fruit shells, and short straw for pelleting. The moisture content of the raw materials is controlled at 12-17%, and the materials can be put into production after being crushed to a suitable particle size. Raw materials can be obtained from a wide range of sources.

Application Areas

The rice husk and wood chip pellet mill produces mixed pellets with high calorific value and complete combustion, which can be used as clean fuel for industrial boilers, factory heating, and biomass power plants. It can also be sold to the market. The finished pellets can also be used as raw materials for carbonization to produce biochar. The equipment simultaneously consumes rice husks from rice mills and wood processing waste, solving problems such as waste accumulation, dust pollution, and high processing costs, and transforming low-value agricultural and forestry by-products into high-value-added products.

Details

1. HUIXIN Gearbox: Heavy-duty HUIXIN gearbox supplies adaptive torque to cope with alternating load from abrasive rice husk and elastic wood shaving fibers.

2. Rotating bracket: Reinforced rotating bracket mitigates vibration caused by hybrid feed with different bulk density and particle forms.

3. Reducer: Precision matched reducer sustains stable power transmission amid resistance changes of the mixed husk-shaving blend.

4. 304 stainless steel dust cover: 304 stainless steel dust housing withstands dual wear from silica husk dust and fine wood dust.

5. Internal lifting knife: Built-in internal lifting knife breaks husk accumulation and tangled wood shaving clumps to avoid material bridging.

6. Adjustable blades: Adjustable blades set proper feed thickness to fit the mixed physical state of granular rice husk and fluffy wood shavings.

Unique Advantages

1. Mill assembly: Custom ring die and roller assembly balanced for silica particles and wood fiber, extending die service life for mixed formula production.

2. HUIXIN gearbox: Purpose-adjusted HUIXIN gearbox with anti-impact tooth design, coping better with fluctuating mixed-material loads than ordinary standard gearboxes.

3. Stainless dust cover: Integrated 304 stainless dust shield instead of painted carbon steel, resisting long-term scratch and erosion from silica-containing mixed dust.

4. Bottom feeding reducer: Upgraded under-feed reducer prevents layered deposition of rice husk and wood shavings, eliminating uneven feeding and inlet blockage.

5. Cooling system: Graded air cooling layout relieves inconsistent thermal shrinkage of the two raw materials, lowering cracking rate of composite mixed pellets.