Industrial Mixer (100–500 kg batch) is typically a U-shaped Horizontal Ribbon Blender or a Tilting Drum Mixer. These are designed to blend various fried components (sev, boondi, gathiya) with spices and oil without breaking the delicate snacks.

1. Technical Specifications (100–500 kg Batch)

2. Key Designs for Namkeen Mixing

• Horizontal Ribbon Mixer: Best for 500 kg batches. It uses double helical ribbons that move material in opposite directions, ensuring $99\%$ spice distribution consistency.
• Tilting Drum Mixer: Preferred for smaller batches (100 kg). The drum rotates and can be tilted manually or hydraulically to unload the product.
• Paddle Mixer: Used specifically for "coated" namkeen (like Tasty Peanuts) where you need to coat the nut without stripping off the batter.

Essential Features to Look For

• Variable Frequency Drive (VFD): To control the mixing speed. High speed is good for spices; low speed is essential for delicate sev.
• Food Grade Gaskets: Ensure the seals are silicone/teflon to prevent grease from entering the food.
• Safety Interlocks: The mixer should stop automatically if the top lid is opened during operation.