Ferrous Scrap & Steel Recycling

Ferrous scrap is any scrap that contains iron: carbon steel, cast iron and stainless steel. It comes from two main sources. Obsolete or post-consumer scrap is recovered from end-of-life vehicles, appliances, machinery and demolished structures. New or prompt scrap is generated as offcuts, turnings and rejects in manufacturing. Most ferrous grades are magnetic, which makes magnetic separation the backbone of ferrous scrap processing.

Heavy and oversized scrap is cut to size with mobile, container or guillotine shears. Mixed and light scrap, such as car bodies and white goods, goes through a hammermill shredder that liberates the steel from other materials. Magnetic drums and overband magnets recover the ferrous fraction, air separation removes the light fraction (shredder residue), and balers or briquetting presses densify light scrap and turnings for transport and melting.

Copper cannot be removed economically once it is in the steel melt. Residual copper causes surface cracking during hot rolling and limits the steel grades that can be produced. Shredder plants therefore remove motors, wiring and other copper-bearing parts with picking stations and, increasingly, with sensor-based sorting systems that detect copper in the ferrous stream before it leaves the yard.

Electric arc furnaces (EAF) melt mainly scrap and produce far less CO2 per tonne than the blast furnace and basic oxygen furnace route. As steelmakers move towards EAF and direct reduced iron, demand grows for clean, low-residual scrap. That puts more weight on precise sorting, chemical analysis and consistent grading at the scrap yard and shredder plant.

A typical ferrous scrap yard combines material handlers with grabs or lifting magnets, shears, a shredder or pre-shredder, balers, conveyors and magnetic separators. Weighbridges record incoming and outgoing loads, and radiation detection portals at the gate screen every truck for radioactive sources. Larger plants add eddy current separators and sensor-based sorting to recover the non-ferrous metals in the shredder residue.

Scrap is traded in standard grades that define size, density, origin and permitted contaminants. In North America the reference is the Scrap Specifications Circular published by ReMA (formerly ISRI); in Europe the EU-27 Steel Scrap Specification is widely used. Steelworks add their own limits for residual elements such as copper, tin and chromium, which buyers check through sampling and analysis.

Use the Manufacturers Directory A–Z or the Equipment Guide. Partner profiles carry direct contact details; other listings link to the company website.

Yes. Ask the Expert puts your question to a field expert active in Ferrous Scrap & Steel Recycling. The answer comes back to you by e-mail; when we publish it, other readers benefit too.