Grain De-Stoner Machine – Precision Removal of Heavy Impurities
Grain de-stoners are specialized machines engineered to effectively separate heavy foreign objects—such as stones, glass, metal fragments, and soil clods—from a stream of lighter grains or other bulk materials. They are a critical component in any processing line, serving a dual purpose: protecting downstream equipment from mechanical damage and ensuring the purity and safety of the final food product.
The machine operates on the principle of vibro-pneumatic separation. By combining a vibrating deck with a controlled upward air flow, the material is "fluidized." This allows the lighter grain to float over the screen surface and discharge, while the heavier impurities remain in contact with the deck and are moved upward to a separate discharge outlet. This method provides exceptional accuracy even when impurities have a size similar to the product itself.
Key Advantages:
- High Efficiency in removing stones and heavy mineral contaminants
- Equipment Protection for downstream machines like rollers and sorters
- Adjustable Aspiration to fine-tune the separation based on specific gravity
- Low Maintenance with a robust mechanical design and durable screen surfaces
- Compact Footprint allowing for easy integration into existing production lines
Application and Safety
BIOSA’s de-stoning machines are essential for processing wheat, corn, pulses, coffee, seeds, and nuts. They provide reliable cleaning in conditions where incoming raw materials are heavily contaminated, maintaining high throughput without interrupting the production cycle.
Why Choose Our De-Stoners:
- Maximum Product Purity for food-grade quality standards
- Energy-Efficient Operation with low power consumption
- Heavy-Duty Construction resistant to vibration and industrial wear
- Easy Access for quick cleaning and sieve inspections
- Proven Reliability in continuous, 24/7 industrial environments