Big Bag Breaker & Super Sack Unloader Systems

This equipment is highly versatile and ideal for cement big bag unloading, transferring material into bulk trailers, or integration with pneumatic transfer systems. With its low power consumption of 5 kW and easy installation process, it offers a highly efficient solution for industrial bulk powder handling.

The system features a 3.92cy (3 m³) capacity with a discharge rate of up to 45cy/h (35 m³/h) and a discharge height of up to 14′. It is equipped with an 8″ diameter by 20′ vertical screw conveyor, a side vibrator, and a CE-certified electrical control panel. For enhanced safety and accessibility, the unit includes telescopic legs and stairs with safety rails. Optional features, such as an integrated 150 sf dust collector and a telescopic bellow, are also available to further ensure a clean work environment.

About the Stark Big Bag Breaker

The Stark Big Bag Breaker (also known as a super sack unloader or bulk bag discharging station) is an industrial-grade solution designed for the safe, dust-free, and efficient unloading of cement, fly ash, and other dry powders. Utilizing a high-performance vertical screw conveyor, this system ensures a steady, controlled material flow from Flexible Intermediate Bulk Containers (FIBCs).

By allowing direct and automated discharge into storage silos or cement bulk trailers, the unit significantly minimizes material waste, controls dust emissions, and eliminates severe on-site operational risks associated with manual bag handling. Built from heavy-duty carbon steel (S235JR/S275JR), and equipped with a powerful side vibrator and an integrated dust collector, it guarantees a clean, reliable, and low-maintenance continuous process.

How the Bulk Bag Unloading Station Works

Efficiency in bulk powder handling relies on continuous operation. Once a super sack is placed into the unloading frame via a forklift or hoist, the bag is safely opened over the discharge hopper. The integrated side vibrator ensures that even compacted materials flow freely without bridging. The material then drops into the vertical screw conveyor, which lifts and transfers the cement or powder at a rate of up to 45 cubic yards per hour directly into your downstream equipment, all while the dust collector mitigates airborne particles.

Key Technical Specifications

High Capacity Hopper: 3.92 cy (3 m³) volume to maintain continuous feeding.
Discharge Rate: Moves up to 45 cy/h (35 m³/h) for rapid processing.
Vertical Lift: Discharges material at heights up to 14 feet.
Conveyor Dimensions: Heavy-duty vertical screw conveyor measuring 8″ dia x 20′ (Ø 219 mm x 6,000 mm).
Robust Construction: Manufactured with industrial Carbon Steel S235JR/S275JR.
Dust Mitigation (Optional): Integrated dust collector with a 150 sf (14 m²) filtration area.
Connection Safety (Optional): Telescopic bellow for sealed, spill-free transfers.
Operator Access: Includes #3 telescopic legs and access stairs with safety rails.
Controls: Fully integrated CE certified electrical control panel.
Approximate Weight: 2,840 lbs (1,300 kg).

Applications for Super Sack Breakers

Efficient cement bulk bag unloading directly into batching plants or storage silos.
Seamless transfer of dry materials into pneumatic tank trailers for further transport.
Integration into complex industrial bulk powder handling processes.
Perfect synchronization with pneumatic transfer systems for long-distance silo filling.

Operational Benefits

Optimized Emptying: Ensures efficient and continuous super sack unloading without material bridging.
Precision Transfer: Controlled discharge via the vertical screw conveyor prevents overloading downstream equipment.
High Compatibility: Easily integrates with existing bolted silos and dry bulk tankers.
Environmental Safety: Drastic dust reduction thanks to the integrated filtration collector.
Cost-Effective: Easy installation, minimal footprint, and low power consumption (5 kW).

FAQ – Big Bag & Super Sack Breakers

01. Where can the Big Bag Breaker unload cement?

Our bulk bag unloading station is highly versatile. It can discharge cement directly into storage silos, concrete batching plants, or pneumatic dry bulk trailers, depending on your project’s logistics.

02. How is the material discharged from the super sack?

Once the bag is opened in the hopper, the system utilizes a high-capacity vertical screw (auger) conveyor combined with a hopper vibrator. This mechanical combination ensures a constant, anti-clogging, and safe material flow.

03. What maintenance is required for the FIBC unloader?

To maintain peak system efficiency, we recommend regular inspection and cleaning of the vertical screw conveyor, periodic replacement of the dust collector filters, and routine checks on the vibrator motor.

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Stark guidance for your next purchasing decision

At Stark, we help you choose the super sack breaker and handling solution that best fits your cement and dry powder logistics. Our engineering team provides the technical information, CAD layouts, and operational data you need to invest with confidence. Reach out to our experts today.

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