Industrial pre-shredder and twin-shaft shredder

Power surges can be minimized by feeding the hammer mill with homogeneous material free from unshreddables.
Using a twin-shaft shear shredder helps break up bales and perform controlled shearing, resulting in a consistent and uniform material flow.
This ensures more stable operating conditions for the mill, reducing electrical and mechanical stress and improving plant uptime.

The most effective solution for processing Off-The-Road (OTR) tires is the twin-shaft shear shredder.
Its robust design and low-speed, high-torque cutting technology make it ideal for cutting large-diameter tires and preparing them for subsequent shredding and separation stages.
It is widely recognized as the primary shredder of choice for OTR tire applications.

The operating costs of an industrial shredder are approximately €8 per ton, which is significantly lower than those of a hammer mill, typically ranging from €25 to €40 per ton.
This makes the shredder a highly cost-effective solution for scrap processing.

The most effective solution is shredding, which significantly increases scrap density and reduces the transport cost per ton.
The twin-shaft shredder is ideal for this purpose thanks to its low operating costs, compact footprint, and the fact that it does not require complex air filtration systems. This allows for optimized logistics and improves the competitiveness of exported material.

When a shear baler reaches its maximum operating capacity, the most strategic choice is not to purchase a larger model, but rather to integrate a Blue Devil twin-shaft shredder.
This solution increases the overall productivity of the plant, improves material flow management, and allows for better distribution of workload across multiple processing lines.
The shredder works in synergy with the shear baler, handling both light and heavy scrap, and offers greater operational flexibility over time, avoiding future capacity saturation.

No, our production is based on standardized models.
This approach allows us to ensure short delivery times, spare parts always available, and quick, efficient maintenance.
Standardization means offering reliability, operational continuity, and faster technical support — without compromising performance.

To ensure fast delivery and efficient service, Zato’s Blue Devil shredder is usually available for shipment the day after order confirmation.
We consider speed and customer focus to be among our core strengths.

The installation of a shredder generally requires three working days.
During this time, all positioning, mechanical and electrical connections, and functional checks of the system are carried out.

The fourth day is dedicated to operational testing with the customer’s material, under the supervision of specialized technicians.
In this phase, the machine is tested under real operating conditions, with any final adjustments made to optimize performance.

Yes, it is possible to test the machine using your own material.
We take a practical and transparent approach: we believe it is essential for the customer to evaluate the machine’s performance before purchasing.
For this reason, we offer the opportunity to organize an operational test using your material on an already installed and running machine.
During the test, you will be able to assess the output quality, particle size, density, and overall compatibility with your production process.

The most effective way to prepare material for a decoater is by using a twin-shaft shredder. This shredding process reduces scrap size, homogenizes the feed, and removes surface impurities before thermal treatment. Well-prepared scrap improves decoater efficiency, ensures more uniform coating removal, and maximizes the recovery of clean aluminum. Additionally, the initial densification allows for better logistics and reduced energy consumption in the furnace, optimizing the entire recycling process.

Downtime in hammer mills is typically caused by routine maintenance or unexpected damage due to explosions or non-shreddable materials. Using a twin-shaft shredder as a pre-shredder helps intercept problematic elements and reduces wear on internal components. This leads to smoother operation, fewer emergency interventions, and increased plant uptime.

The twin-shaft shredder does not require special foundations. A flat surface capable of supporting a static load of up to 70 tons is sufficient. This simplifies installation, reduces infrastructure costs, and makes the system easy to integrate into various plant layouts.

To reduce explosions in the furnace, it is essential to avoid feeding materials that contain liquids or compressed gases. A twin-shaft shredder helps eliminate gas cylinders, pressurized containers, and residual liquids before melting. In addition to enhancing safety, this process reduces the number of baskets required, shortens the tap-to-tap cycle, and increases the furnace’s overall productivity.

Untreated metal scrap takes up a large volume compared to its weight, resulting in high transport costs. The most effective solution is shredding, which increases material density by up to 3–4 times. This allows more scrap to be loaded into the same truck volume, reducing the number of trips required and lowering overall handling and transport costs.

To optimize the volume reduction of metal scrap, especially light scrap, it is recommended to use a twin-shaft shredder. This technology densifies the material, facilitates impurity separation, and ensures high throughput at low operating costs. Unlike hammer mills or inclined shears, the shredder operates continuously and efficiently, improving logistics and the overall cost-effectiveness of the recycling process.

The productivity of a hammer mill improves significantly when the input material is homogeneous and pre-treated. Using a twin-shaft shredder helps reduce the size of the scrap, eliminate non-shreddable materials, and ensure a consistent feed. This reduces residence time in the grinding chamber, lowers the risk of downtime, and extends the lifespan of internal components. The result is a more efficient, safer system with reduced operating costs.

Explosions in hammer mills are often caused by gas cylinders, airbags, or pressurized containers present in the scrap. Given the high volumes processed, it is difficult to ensure complete decontamination before feeding. The most effective solution is the use of a twin-shaft shredder as a pre-shredder, capable of opening and neutralizing the sources of explosion at their origin. This strategy can reduce the risk of explosions by up to 95%, limit damage to equipment, lower maintenance costs, and ensure continuous operation.