Current Separators: Maximizing Metal Recovery at MRFs & Landfills

Traditional magnetic systems have long been effective at removing ferrous metals like iron and steel. However, they leave behind a significant portion of high-value materials, including non-ferrous metals such as aluminum, copper, and brass.

This is where ECS technology becomes indispensable.

By leveraging electromagnetic induction, ECS systems are able to:

In high-performing facilities, ECS units consistently achieve recovery rates exceeding 97%–99%, particularly in aluminum-rich streams like used beverage cans. That level of efficiency directly translates into measurable financial gains.

Eddy current separation is built on a simple but powerful principle.

A high-speed magnetic rotor generates alternating magnetic fields. When conductive materials pass through this field, eddy currents are induced within them, creating opposing forces that repel and eject the metals from the waste stream.

This process happens continuously and at high speed, allowing facilities to process large volumes without sacrificing accuracy.

What’s changed in recent years is the level of precision. Modern systems can now recover metal particles as small as 1–3 mm materials that were historically lost to fines and sent to landfill.

That shift alone has redefined recovery potential.

One of the biggest misconceptions in recycling is that installing advanced equipment automatically improves results. In reality, performance is determined by how well the entire system is designed and integrated.

ECS systems perform best when supported by a combination of upstream and downstream technologies. Magnetic separation removes ferrous materials early, preventing interference. Proper material preparation through shredding, screening, and controlled feeding ensures that metals are exposed and evenly distributed before reaching the separator.

Downstream, additional systems can further refine output, capturing materials that may have been missed in earlier stages.

In advanced facilities, this layered approach often includes:

The result is not just improved recovery it’s consistent, predictable performance across the entire operation.

Modern recycling facilities are no longer limited to mechanical separation. Technologies like electrostatic separation have opened new possibilities, especially for materials that are difficult to sort using conventional methods.

Electrostatic systems operate based on differences in electrical charge, allowing them to separate materials independent of density or color. This is particularly valuable in applications such as:

As waste streams grow more complex, mechanical separation alone is no longer enough. STEINERT's UniSort platform brings intelligent, sensor-driven precision to the recovery process and it represents a significant leap forward in what modern recycling facilities can achieve.

UniSort systems use near-infrared (NIR) and hyperspectral imaging to detect and separate materials by composition, not just size or density. This means facilities can accurately identify and sort plastics, paper, metals, and composite materials even at high belt speeds and high throughput volumes.

Key capabilities of the UniSort platform include:

UniSort Film EVO 5.0- Purpose-built for 2D materials such as films and flexible packaging. Features Intelligent Active Object Control, which dynamically adjusts operations to maintain consistent capacity and reliability even as input materials vary.

UniSort Black- Identifies and sorts dark-colored plastics that conventional NIR systems cannot detect, opening recovery pathways for materials that would otherwise be lost.

UniSort Flake- Designed for post-shredder and flake sorting applications, delivering high-purity output from mixed or contaminated streams.

What sets UniSort apart is its ability to integrate directly into existing separation lines alongside ECS and electrostatic systems. Rather than functioning as a standalone unit, it becomes an intelligent layer within a fully engineered recovery system closing gaps that mechanical technologies leave behind.

For facilities processing mixed residential, commercial, or industrial streams, UniSort-based sorting can meaningfully improve purity, reduce contamination, and unlock value from materials that previously went unrecovered.

One of the most overlooked factors in separation efficiency is material preparation.

Even the most advanced systems cannot perform effectively if the input material is not properly conditioned. Moisture, dust, inconsistent particle size, and composite materials can all reduce separation efficiency.

High-performing facilities address this by:

In practice, this means that the success of ECS is determined as much by what happens before it as by the technology itself.

When properly implemented, ECS and integrated separation systems influence every key performance metric in a recycling operation.

From a revenue standpoint, non-ferrous metals, especially aluminum represent one of the most valuable outputs. Higher recovery rates and improved purity lead directly to better market pricing and increased revenue per ton.

Operationally, automation reduces reliance on manual sorting, improving safety and consistency while lowering labor costs.

At the same time, recovering more material upstream reduces the volume sent to landfill, lowering disposal costs and supporting compliance with environmental regulations.

This combination of higher revenue, lower costs, and improved sustainability is what makes advanced separation systems such a critical investment.

Despite their capabilities, ECS systems are not immune to inefficiencies. However, most performance issues stem from system design rather than the technology itself.

For example, fine particles may still be lost if screening is inadequate. Material layering on conveyors can reduce separation accuracy. Improper calibration can limit recovery rates.

The solutions are not about adding more equipment they’re about refining the process:

Facilities that approach ECS as a dynamic system requiring continuous optimization consistently outperform those that treat it as a static installation.

The future of metal recovery is being shaped by precision, automation, and intelligent system design.

We’re already seeing the shift toward:

As waste streams become more complex, the ability to adapt and optimize in real time will become a key competitive advantage.

Modern recycling is no longer limited to mechanical separation. Electrostatic and sensor-based technologies extend what’s possible:

eFACTOR3 provides fully integrated solutions that combine ECS, electrostatics, and sensor-based sorting:

By combining ECS with electrostatic and sensor-based sorting, eFACTOR3 ensures maximum recovery with minimal waste.

In a market where many providers focus on individual machines, eFACTOR3 takes a fundamentally different approach, engineering complete separation systems designed for performance, not just installation.

By combining advanced technologies including eddy current separation, electrostatic systems, and sensor-based sorting into fully integrated solutions, eFACTOR3 helps facilities:

More importantly, the focus is not just on delivering equipment but on ensuring that every component works together to achieve measurable, long-term ROI.

If valuable metals are still ending up in your fines or landfill streams, the issue isn’t just equipment it’s system performance.

eFACTOR3 specializes in designing high-performance, fully integrated separation systems that maximize recovery, improve purity, and deliver measurable results.

Connect with our team today to evaluate your operation and identify where you’re losing value.

Because in today’s recycling environment, success isn’t about processing more it’s about recovering more from what you already have.