Fluidized Bed Mixers

Forberg^® mixer

When your production requires extreme speed without sacrificing product quality, the Fluidized Bed Mixer is the premier choice. Specifically engineered for low- to medium-density bulk materials—ranging from fine powders to pellets—this system provides one of the fastest mixing cycles in the industry while remaining remarkably gentle on friable materials.

The secret to its speed lies in the “Fluidized Zone.” Two counter-rotating shafts equipped with flat, angular paddles sweep material from parallel U-shaped troughs toward the center. This action causes particles to become airborne, creating a weightless environment where ingredients intersperse instantly.

• Rapid Cycles: Achieve a uniform blend (typically ~5% CV*) in just 10 seconds to 2 minutes, with 30 seconds being the standard.
• Uniformity Regardless of Density: Particles of different sizes, shapes, and bulk densities blend seamlessly in the fluidized zone.
• Minimized Degradation: Short mixing times and low-friction agitation mean significantly less shear and heat generation, protecting delicate or heat-sensitive products.

*Coefficient of Variation

The fluidized zone is the ideal location for introducing liquid additions, regardless of viscosity.

• High-Volume Spraying: Liquids disperse rapidly throughout the batch, allowing for high volumes to be added while maintaining the free-flowing characteristics of the final product.
• Instant Discharge: Equipped with full-length, pneumatically actuated drop-bottom gates (Bomb Bay Doors), the mixer empties almost instantaneously without segregation.
• Zero-Waste Design: Unlike traditional ribbon or paddle blenders that leave a “heel” of material, this mixer evacuates a much higher percentage of the batch, drastically reducing waste and cleaning time during changeovers.

• Scalable Production: Available in capacities from 0.21 to 280 cu ft (5.9 liters to 8.01 cu m), catering to both small-scale and massive industrial operations.
• Flexible Filling: Maintains peak efficiency at fill levels from 50% up to 100% of rated capacity.
• Superior Maintenance Access: Large top covers provide easy access for inspection and cleaning, while optional heating or cooling jackets can be integrated for specialized thermal processing.

• Sanitary Finishes: Construction in 304L or 316L Stainless Steel with finishes up to #7 mirror pharmaceutical polishes and optional electro-polishing.
• Cleaning Solutions: Available with Clean-In-Place (CIP) or Wash-In-Place (WIP) nozzles for automated, high-hygiene environments.

• Precision Control: Options for load cell mounts for precise batch weighing and fully automated PLC-controlled systems for remote operation.

When production speed and product integrity are your top priorities, the Fluidized Bed Mixer stands out as the most efficient technology on the market and is the ultimate solution for high-capacity production lines that demand the fastest possible turnaround with the highest level of blending precision.

The Fluidized Bed Mixer delivers a perfectly uniform blend in just 30 seconds, using a “weightless” zone to mix delicate materials without degradation. Its rapid cycle times and “Bomb Bay” discharge gates ensure maximum throughput with virtually zero residual waste or cleaning downtime.

Stainless steel industrial mixer with a 142-liter (5 cu ft) capacity designed for rapid and gentle processing of low-to-medium density bulk materials. It is highly efficient, achieving typical mixing times of just 30 seconds (ranging from 10 seconds to 2 minutes), while its gentle action ensures that friable materials are not degraded. Additionally, the unit excels at the fast and uniform distribution of liquid additions, even at high ratios, and features a design that allows for both quick mixing and rapid discharge.

High-performance fluidized bed mixer designed to process low-to-medium density materials rapidly—typically in just 30 seconds—while ensuring that delicate, friable particles are not damaged. Similar to the previous model but potentially different in scale, this stainless steel unit efficiently integrates liquid additions and provides a gentle yet fast mixing solution to maintain product integrity.

The 5 cu ft (142 liter) Fluidized Bed Mixer features a powerful motor that drives twin agitator shafts at high speeds. This mechanical action is specifically designed to achieve the necessary fluidization of materials, ensuring a fast and consistent mix throughout the entire batch.

The mixer utilizes two counter-rotating shafts that rapidly spin paddle agitators inside parallel U-shaped troughs. This specific design creates the high-speed mechanical action necessary to fluidize the materials effectively and ensure a thorough blend.