Metal Recycling and Separation FAQs
Find answers to common questions about magnetic separation equipment, non-ferrous metal recovery, and BlakerTech’s bespoke recycling solutions. Our comprehensive frequently asked questions below covers technical information, application guidance, and practical advice for facilities seeking to improve their metal separation capabilities.
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How long will it take to open a credit account with Blaker and what information needs to be supplied?
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Credit accounts are available for business customers. Subject to the speed of references, the process normally takes around two weeks.
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Is Blaker open on Saturdays?
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No, we are open Monday to Friday 8am – 5pm.
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Is it possible to visit the Blaker site to see the SandFlo processor and MagThro separator in action?
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Please complete an Enquiry Form by clicking on the ‘Get in Touch’ button below to arrange a visit.. In the coming months we plan to provide a means of viewing our solutions via live camera feed. If you’re unable to visit in person, you can also view our recent case studies to see how our systems are performing for other clients, or explore our news articles for the latest company updates.
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What size materials will the SandFlo and MagThro process?
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Both machines rely on the material having been processed through a shredder. The best results are achieved when the material size is regular. For example, material shredded and screened to between 10mm and 30mm will have a much higher success rate than material between 5mm and 50mm.
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What colours are the SandFlo and MagThro supplied in?
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If you have your own corporate colours, we can paint the SandFlo and MagThro in any standard RAL basic colour within the price. Specialist colours/finishes will involve a small additional cost.
SandFlo FAQs
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How does SandFlo’s fluidised bed technology work?
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SandFlo is a fluidised bed separator that uses a carefully controlled flow of air through a vibrating bed of fine media, often sand, to separate materials by particle density and characteristics.
In this fluid-like environment, lighter non-ferrous metals such as aluminium float, while denser materials like copper, brass, stainless steel, and zinc sink and are directed to a separate outlet. This makes SandFlo ideal for handling nonferrous metal separation tasks where magnetic separation alone is not effective.
The system offers a clean, dry alternative to water-based separation, with no contaminated water to manage or dispose of. We are also actively developing heavy duty sand separation systems to meet the growing demand for higher-volume, industrial-scale applications.
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What are the advantages of using a fluidised bed for metal separation?
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Fluidised bed separators like SandFlo offer several key advantages for non-ferrous metal separation and metal recovery:
- No water waste: Unlike water table systems, SandFlo uses air, removing the need to treat or dispose of contaminated water
- Lower investment cost: Significantly more affordable than colour sorters or X-ray-based systems
- Low running costs: With few moving parts, it offers easy maintenance and low operating overheads
- Straightforward to use: There are no complicated user manuals to digest — SandFlo is designed for simple, intuitive operation
- Reliable and scalable: Ideal for both standalone and integrated systems, especially where dry separation is essential
This dry separation process is particularly beneficial in environments where water usage is restricted or sustainability is a key consideration.
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Can SandFlo remove plastics or coatings from metal particles?
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No, SandFlo is not designed to remove bonded materials such as plastics. It separates materials based on density, not material composition.
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What materials are best suited for metal separation with SandFlo?
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SandFlo separates non-ferrous metals that have been screened for consistent particle size. Ideal materials include aluminium, copper, zinc, tin, and brass, particularly where density differences allow for clean separation.
For best performance, input material should be dry, relatively clean, and fall within a defined size range to ensure optimal metal recovery.
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How is SandFlo different from magnetic or eddy current separators?
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While magnetic separators and eddy current separators rely on electromagnetic properties to extract ferrous and non-ferrous metals, SandFlo takes a different approach.
As a fluidised bed separator, SandFlo operates purely on density and fluid dynamics, using air to suspend and separate materials based on weight rather than magnetic response.
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Why is SandFlo called a ‘sand separation system’ if it doesn’t only use sand?
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While SandFlo is often described as a sand separation system, it doesn’t rely exclusively on sand. The term refers to the fluidised bed separator process, which uses fine media that, when aerated, creates a fluid-like environment for density-based separation.
This aerated medium allows lighter non-ferrous metals to float while denser materials sink, enabling clean, dry separation without the need for water. Depending on the application, the system can operate with a variety of media to suit specific metal recovery requirements.
MagThro FAQs
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What makes the MagThro eddy current separator different from other separators?
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MagThro is engineered to deliver reliable and consistent performance in demanding metal recovery environments.
It features high-strength Neodymium magnets that generate a powerful magnetic field, enabling precise separation of non-ferrous metals, such as aluminium, copper, and other non-magnetic materials, commonly found in WEEE, automotive shred, and municipal waste streams.
Built for durability, MagThro has a robust frame and a low-maintenance design, making it ideal for industrial settings where reliability, uptime, and ease of operation are critical.
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What are neodymium magnets and how are they used in the separation process?
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Neodymium magnets are rare-earth magnets renowned for their exceptionally strong magnetic fields. In eddy current separation, they are incorporated into the rotor to generate the high-intensity fields necessary to separate non-ferrous metals from mixed material streams.
As materials pass over the rotor, electrical currents are induced in non-magnetic metals such as aluminium and copper. These currents create a repelling force that separates the metals from the rest of the material stream.
The MagThro system includes a three-way splitter that directs output into separate streams for waste, fine non-ferrous metals, and larger non-ferrous metals. The strength of the Neodymium magnets allows effective separation of small particles, even those under 5 mm, providing a clear performance advantage over ferrite-based systems, which can struggle with smaller items such as aluminium fragments or shredded foil.
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What role does the vibratory feeder play in MagThro's efficiency?
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A vibratory feeder is essential for optimising the performance of the MagThro eddy current separator. It ensures that incoming material is evenly distributed across the belt in a single-layer, or monolayer, flow.
This consistent feed allows the Neodymium magnet rotor to apply separation forces uniformly, enhancing the accuracy and efficiency of non-ferrous metal recovery. Uneven material distribution can reduce separation performance, particularly when processing mixed or high-volume streams.
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Is MagThro suitable for high-volume recycling operations?
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Yes, the MagThro is purpose-built for high-throughput environments where consistency and reliability are critical. It is ideally suited for material recovery facilities (MRFs), scrap metal yards, and e-waste processing centres, providing efficient non-ferrous metal separation.
When paired with a suitable feed system, MagThro can operate for extended periods with minimal downtime. Some customers run their equipment up to 20 hours a day, seven days a week, demonstrating its robust construction and dependable performance in demanding industrial settings.
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What are the benefits of using rare-earth magnets like neodymium in metal recovery?
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Neodymium magnets are exceptionally strong and compact, allowing precise separation of even small or low-mass non-ferrous metals. Their high strength also reduces the need for moving parts, lowering energy consumption and maintenance requirements.
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What types of materials do MagThro separate in real-world applications?
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- Non‑ferrous metals from mixed waste streams: MagThro uses a high-energy eddy current rotor with Neodymium magnets to separate non-magnetic metals like aluminium, copper, and brass from shredded or mixed material.
- Fine fractions and small particles: Thanks to its powerful rotor and precise three-way splitter, MagThro can recover very small non-ferrous fragments, even under 5 mm, making it ideal for processing shred residue or fines.
- Complex waste streams: The system is particularly effective in handling difficult materials such as printed circuit boards (PCBs), as shown in case studies where non-ferrous metals embedded in mixed plastics and electronics are extracted.
- Automotive shred and ASR (Automotive Shredder Residue): MagThro helps unlock value from ASR, separating metals from plastics, rubber, glass, and other non-metals commonly found in ELV (end-of-life vehicle) processing.
Contact Our Expert Team
Call us on 01403 783634, email us on info@blakertech.com or fill in the form below.
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