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Destoner

High-efficiency destoning for seed and grain processing

The LMC Roca Destoner is a high-efficiency destoner for seed and grain processing, designed to remove heavy foreign material such as stones, glass, metal, and dense debris from dry, free-flowing product. Using advanced density separation, this grain destoner improves product purity, protects downstream equipment, and ensures consistent, market-ready output.

Originally developed as a density separator for stones, the modern Roca Destoner has evolved into a highly efficient system capable of removing a wide range of dense contaminants commonly found in grain and seed processing. It is an essential machine for improving product purity, protecting downstream equipment, and ensuring clean, market-ready product. 

Built for reliability, the Roca Destoner is ideal for commercial seed plants, grain cleaning facilities, and specialty crop operations where consistent performance and durability are critical.

KEY FEATURES

  • Ripple Deck Design

    More complete and distinct product separation is achieved with the superior traction provided by the rippled deck insert.

  • High Efficiency Fan

    Utilizing a high-efficiency bottom fan, the Roca series destoner enables the user to make precise air adjustments with one simple control. As a result, multiple air adjustments are not necessary to obtain proper bed fluidization.

LMC Destoner

  • Discharge System

    The Roca Destoner is available with multiple discharge configurations. Decks with individual discharge gates or automatic discharge systems can be selected to suit specific processing requirements.

  • Heavy Duty Drive System

    All LMC destoners use an eccentric drive that is fully counterbalanced. This reduces vibration, extends machine life, and lowers overall energy consumption.

KEY APPLICATIONS

Seed Cleaning Plants

Removes stones, glass, and dense foreign material from cereals, pulses, oilseeds, and specialty crops before final processing.

Grain Processing Facilities

Improves product purity and protects downstream equipment by removing heavy contaminants early in the cleaning line.

Pulse and Bean Processing

Effectively separates stones and dense debris from lentils, peas, and beans to meet food-grade quality standards.

Specialty Crop Operations

Ideal for crops like mustard, flax, quinoa, and other small seeds where dense impurities must be removed.
LMC Roca destoner for seed and grain processing removing stones and heavy foreign material

DESTONER PERFORMANCE AND SEPARATION CAPACITY

  • Density-Based Separation

    Advanced deck design and airflow control allow the machine to separate the heaviest materials from the product stream with high accuracy.

  • Consistent Product Flow

    Balanced drive systems and precise air control ensure stable operation and uniform separation results.

  • Built for Industrial Use

    Heavy-duty construction, reliable drive components, and low-maintenance design provide long service life in demanding processing environments.

Why Add a Destoner to Your Processing Line

1. Removes stones, glass, and metal before downstream equipment.

2. Improves overall product purity and grading results.

3. Reduces wear on gravity tables, color sorters, and other machines.

4. Essential for food-grade grain cleaning and seed processing operations.

Learn More About The LMC ROCA Destoner

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High-Efficiency Destoning System

The LMC Roca Destoner removes stones, glass, and heavy contaminants before downstream equipment. This improves product purity, protects machinery, and ensures consistent results in modern seed and grain processing lines.

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