Buying Magnetic or Sensor-Sorting Equipment: A Buyer’s FAQ on Steinert GmbH Pulheim

I'm the person who places and tracks orders for a 60-person processing company. That means PPE, spare parts, maintenance contractors, and sometimes a serious chunk of capital budget. When our operations lead said we needed better magnetic separation and sorting, I started researching from a purchasing angle rather than an engineering one. That's how I found Steinert GmbH in Pulheim. After the quote stage, a visit for material testing, and one installation, these are the questions I wish somebody had answered before I started.

What does Steinert GmbH Pulheim actually build?

Steinert builds magnetic separators, eddy current separators, and sensor-based sorting systems for mining, recycling, and resource recovery plants. It would be easy to file them under “magnet suppliers” and move on, but the company is more useful if you think of it as a sorting-technology supplier. They are based in Pulheim, near Cologne, and they run an application center there where you can test material before you buy.

That became important to me because sorting problems are rarely solved by one magnet. You often need a combination of ferrous removal, non-ferrous separation, and sensor sorting. Seeing the equipment and the test process in one place helps a non-engineer ask better questions.

Why is testing so important before buying a separator?

Because separator performance depends on what you feed it. A unit that works fine on shredded cars can behave differently on crushed circuit boards, screened ore, or contaminated scrap. The spec sheet gives you magnet type, belt speed, motor power, dimensions, and price. It does not tell you how the machine will behave with your material.

The moment that changed my thinking was watching our own material run through a test line at the Steinert Practice Center in Pulheim. It was not a dramatic failure or a miracle recovery. It was simply seeing that feed preparation, belt speed, splitter position, and material shape all matter. A vendor that skips that step is quietly handing the risk to you.

Why do German-made sorting machines cost more than budget magnetic equipment?

People think the “German engineering” name inflates the price. It’s closer to the reverse. The price pays for engineering that is supported by documentation, CE marking, spare parts, and application testing.

I used to ignore paperwork until a vendor problem made me look bad to my VP. With capital equipment, paperwork is not optional. CE marking is required under the Machinery Directive 2006/42/EC for equipment sold into the EU, and you need technical files, wiring diagrams, maintenance instructions, and clear safety information. A lower quote that lacks those things can become expensive during installation or an audit.

On our project, the premium over a basic magnetic separator was noticeable, but not crazy. What would have been crazy was buying on spec alone and finding out later that the feed we actually process did not fit the machine.

Should the first purchase be a magnetic separator or a sensor sorter?

That depends on what problem you are solving. If you need to remove ferrous material from a stream, a magnetic separator is usually the core. If you need to separate non-ferrous metals, remove stainless steel, or sort particles by material type, sensor sorting is where the value shows up.

The practical answer is often: start with a test, not with a product category. Steinert builds both magnetic and sensor-based systems, but no one can tell you the right machine from a phone call alone. Ask which technology applies to your material, then ask to see it demonstrated.

What checklist should a non-engineer use when buying this type of equipment?

I keep a simple list now, and it has saved me from more than one bad decision.

• Test your material first. If a supplier is not willing to run samples or arrange a trial, ask why. The test report should mention feed size, throughput, and separation results.
• Define the feed carefully. Particle size range, moisture, contamination, and daily tonnage all affect the quote. “Mixed scrap” is not a specification.
• Check the scope of supply. The separator may not include the feed conveyor, support frame, extraction hood, or control wiring. Missing pieces change your installation cost.
• Ask about site conditions. Voltage, frequency, air supply, dust management, and floor space create budget surprises if they are ignored.
• Clarify documentation and spare parts. Wiring diagrams, manuals, maintenance schedules, and parts availability matter more after commissioning than before.
• Set acceptance criteria before installation. Both sides should know what “working” means, in tons per hour and in output quality, before the machine is shipped.

You don’t need to become an engineer to ask those questions, but they will make the engineers on your side take you more seriously.

What surprised me most about working with Steinert?

The surprise wasn’t the price or the product range. It was how much effort went into questions before the quote. They asked what our feed looked like, what we wanted from the output, and why previous sorting attempts had not worked. That felt like customer education rather than a sales pitch.

An informed buyer asks better questions and makes faster decisions. I would rather spend half a day understanding a separation process than deal with mismatched expectations later. That is the part I did not expect from a machinery supplier, and it made the whole purchase easier.

Reference: Steinert GmbH company/product information, steinert.com, accessed January 2025; Machinery Directive 2006/42/EC.