The oilseeds extruder is widely applied to rice bran, soybean, rapeseed, corn germ, and other oil-bearing materials. Through extrusion, the material structure is modified into a porous and permeable form, improving solvent penetration and extraction performance.

Working Principle

Oilseeds are fed into the extruder and subjected to mechanical and thermal effects, including extrusion, shearing, kneading, and steam conditioning.

Under high temperature and pressure, the cellular structure is disrupted and oil is released. When discharged through the die, the material undergoes instant pressure drop, causing moisture evaporation and expansion.

The final product is a porous, expanded material with improved permeability and suitable physical strength for solvent extraction.

Process Benefits

Improved Extraction Efficiency

Expanded structure increases solvent permeability and reduces extraction time.

Higher Plant Capacity

Improved bulk density and material flow enhance extractor throughput.

Reduced Residual Oil

More complete cell rupture leads to lower oil content in meal.

Lower Energy and Solvent Consumption

Higher mixed oil concentration reduces steam and solvent usage.

Enhanced Oil Quality

Enzyme inactivation improves crude oil stability and refining performance.

Process Integration

The extruder is typically installed before solvent extraction and can be integrated into different process routes:

Rice Bran

Cleaning → Conditioning → Extrusion → Solvent Extraction

Soybean

Cleaning → Cracking → Dehulling → Flaking → (Extrusion) → Solvent Extraction

Pre-pressed Cake

Pre-pressing → Crushing → Extrusion → Solvent Extraction

Extrusion improves the performance of downstream equipment such as extractor and DTDC, increasing capacity and reducing energy consumption.

Technical Specifications

Operating Advantages

Continuous operation suitable for industrial production
Applicable to a wide range of oilseeds and pre-pressed materials
Supports stable downstream processing conditions
Compact structure for easy integration into new or existing plants

Economic Benefits

Increase extractor capacity by 30–50%
Reduce residual oil in meal
Lower steam consumption in extraction and desolventizing
Reduce solvent loss and overall operating cost
Improve overall plant profitability
Short payback period for new installations and retrofits

The Oilseeds Extruder is a core unit in oilseed pretreatment, engineered to deliver stable operation and optimized extraction conditions. Backed by extensive project experience, it supports efficient, reliable, and large-scale production.