Overview
The document provides technical specifications and operational details for the Wynveen International vacuum feed coater, a versatile machine used in feed processing to apply liquids to pellets and extrudates.

Specifications
The vacuum feed coater is available in various models, each with different capacities and dimensions. Key specifications include:

• Drive power ranging from 6 kW to 37 kW.
• Effective volume from 500 to 2800 liters.
• Batch processing capability of up to 35 batches per hour.
• Maximum capacity ranging from 8 to 28 tons per hour.

Technical Details
The core component is a twin-shaft paddle mixer designed for vacuum conditions. It features an airtight butterfly valve at the inlet and pneumatic bomb-doors at the outlet, leading to a vacuum-proof surge hopper. The mixer operates at a low rotational speed to ensure gentle handling and minimize product abrasion.

Process Description
The process involves feeding the product into the coater, where an electronic weighing unit calculates the required liquid addition. Under near-vacuum conditions (100 mbar), liquids are sprayed onto the pellets. Once the vacuum is released, the liquid penetrates the pellet core, and additional flavorings can be applied before discharge. The system can handle up to 35 batches per hour.

Applications
The vacuum feed coater is used in various industries for batch processing:

• Aqua Feed Plants: Addition of pigments, micro-ingredients, and oil up to 30%.
• Pet Food Industry: Addition of micro-ingredients, aromas, and fats/oils up to 17%.
• Feed Production: Addition of phytase enzymes and vegetable oil up to 8%.

Advantages
The primary advantage of this system is the effective absorption of liquids into the pellet core, reducing the loss of valuable active ingredients. This process occurs after mechanical and thermal production stages, ensuring ingredient integrity.