If you run a cable recycling operation, the product that matters most is the one your granulator produces every day: clean copper granules, often called copper rice. This is exactly the material smelters and refineries want. They melt it down, purify the metal, and turn it into cathodes, rods, and wire for manufacturers around the world. Selling directly to smelters and refineries usually earns a better price than selling through scrap dealers or brokers, but it also means meeting stricter requirements. This guide walks through how to prepare your granulated copper, find the right buyers, and build deals that last.
Why smelters and refineries buy granulated copper
Smelters and refineries are the largest buyers of recycled copper. They run furnaces and electrolytic lines around the clock and need a steady, consistent feed. Granulated copper from a cable wire granulator suits them well because it is already separated from plastic insulation and can be charged straight into a furnace. When you sell granules instead of whole scrap cable, you are selling a refined raw material rather than a mixed waste stream, which is why granulated copper commands a much higher price per tonne.
What smelters and refineries look for
Before you contact any buyer, understand what they check when material arrives at their gate:
- Purity. This is the single most important factor. The higher the copper content, the better the price. Most smelters test every lot, so you should know your purity before you ship.
- Granule size and uniformity. Consistent particle size makes melting and handling easier. Oversized pieces and fine dust both cause problems in the furnace.
- Low moisture. Wet granules create steam and impurities during melting, and moisture adds weight that buyers do not want to pay for.
- Low contamination. Plastic fragments, steel, aluminum, oil, and dirt all reduce the value of your material. Some buyers reject lots outright if contamination is too high.
- Consistency. Smelters plan production around what you deliver. A buyer who receives 98% purity one month and 94% the next will look for another supplier.
Producing smelter-ready granules
The quality of your output starts with your equipment. A well-matched cable recycling equipment setup - a shredder, a granulator, and separation stages - decides whether your granules meet smelter standards. San Lan's range includes compact granulators with dry separators, high-capacity cable recycling machines, and scrap cable strippers for preprocessing thick or multi-layer cables before granulation. Whether you run a single copper wire recycling machine or a full cable recycling plant, choosing equipment that matches the cable types you process is the first step toward consistent, saleable output.
Test before you sell
Invest in a way to check your own material. A simple density test or an XRF analyzer will tell you the copper content of a sample, and most buyers will run their own assay anyway. Aim for granules that are as close to pure copper as possible. If your purity is low, look at your separation stages - adding an air classifier, a vibrating screen, or a magnetic separator can pull out the plastic dust, fines, and ferrous metal that drag your grade down.
Finding and approaching buyers
Smelters and refineries are not hard to find, but they are selective about who they buy from. Start with these routes:
- Industry associations. Organizations like ISRI and BIR publish member directories and host events where buyers and sellers meet.
- Trade shows. Metal recycling and non-ferrous conferences are where supply relationships are built.
- Direct outreach. Most smelters list a purchasing or raw materials contact. Send a short, professional email with a specification sheet: your purity, granule size, moisture, monthly volume, and location.
- Trading companies. If a smelter is too far away or too large to deal with directly, a metal trader can act as the middleman and still pay better than a local scrap yard.
Sampling, assaying, and pricing
Copper is priced on the London Metal Exchange (LME), and your granules will be priced as a percentage of the LME copper price. The exact percentage depends on purity, contamination, and volume. Expect a discount for granule form compared with refined cathode copper.
When you agree on a deal, sampling and assaying are standard practice. The buyer will take samples from your lot, often with you present, and the assay result determines the payment. Agree on the sampling method and the assay lab before you ship, so there are no surprises later.
Negotiating contracts and payment terms
Smelters prefer long-term relationships. A monthly volume commitment helps them plan, and it gives you leverage on price. Payment terms vary - some buyers pay on delivery, others on a schedule after the assay is confirmed. Get the terms in writing, and start with smaller trial lots before committing to large volumes with a new buyer.
Packaging, logistics, and documentation
Granules ship in bulk. Small lots go in woven bags, larger volumes in big bags or containers. Keep the material dry during transport - a covered truck or container matters more than you might think. Documentation should include the lot weight, your assay certificate, and records of where the cable came from. Many jurisdictions require sellers to keep source records for scrap metal, and buyers increasingly ask for them too.
Common mistakes to avoid
- Selling dirty material. A little plastic or steel can cost you far more than the effort of removing it.
- Inconsistent quality. One bad lot can end a relationship that took months to build.
- Ignoring moisture. Wet granules lose value and can cause problems in the furnace.
- Skipping documentation. Without proper records, you may not be able to sell at all in some markets.
Conclusion
Selling granulated copper to smelters and refineries is the most direct route to the best prices for your output. It comes down to three things: producing clean, consistent granules with the right cable recycling equipment, knowing your quality before you sell, and building relationships with buyers who value reliability. Get those right, and your granulator becomes not just a machine that processes scrap, but a steady source of revenue.
