1. Price the feed like a buyer, not a collector
You cannot price wire without an estimate of its copper content. Different wires carry wildly different amounts:
| Wire type | Typical copper content (by weight) | Notes |
|---|---|---|
| Household wire (BV / THW) | 55–70% | Solid or stranded core, PVC insulation; the standard yard feed |
| Network / phone cable | 20–40% | Thin strands, heavy insulation; only worth it with a granulator |
| Automotive harness | 40–55% | Mixed gauges, tangled; needs shredding before separation |
| Armored cable (SWA / STA) | 30–45% | Steel armor adds dead weight and punishes cheap blades |
| Fine mixed / sweeps | 15–35% | Treat as a bonus stream, not a main diet |
The field test takes ten minutes: cut a 10 cm sample from a few random pieces, strip it by hand, weigh the copper against the whole piece. Repeat on five different pieces and you have a usable number.
Then apply the rule every experienced buyer uses:
Maximum buying price = current copper price × estimated copper content − your processing cost per ton − your margin
Copper at $8,000/t and wire at 50% copper means gross value around $4,000/t. If your processing and overhead run $400/t and you want $300/t of margin, you can pay roughly $3,300/t. Anything above that, and you are effectively working for whoever sold you the wire.
2. Match the machine to the wire, not the other way around
This is where most beginners go wrong: they buy one machine and then try to make every wire fit it.
Thick, clean, straight cable → a wire stripping machine. Fast, low power, cheap to run. Comfortable in the 5–120 mm range.
Thin, tangled, mixed wire → a copper granulator: crush, air separate, and (for high purity) electrostatic finish. This is where the real value of a recycling yard sits.
Armored or contaminated cable → pre-cut or pre-strip before granulating. Feeding steel armor into a standard granulator just converts blade life into money you do not get back.
Motors, radiators, compressors → those are not "wire"; they need dedicated motor and radiator recycling equipment.
If your feed is a mix - and almost everyone's is - plan a line, not a machine: shred or cut the tangled bulk, strip the thick cable, granulate the fine stuff, and pull iron out with a magnet before the copper is finished.
3. Protect the three places money leaks
Leak one: oversized particles. If the crush size is too coarse, separation never fully happens - copper rides out with the plastic, or plastic rides in with the copper.
Leak two: grade. Copper granules are priced by purity. Premium #1 grade (99%+ copper) can sell $200–400/t above secondary grade. A line that drifts from 99.2% to 98.2% purity just gave away a chunk of its margin without anyone noticing.
Leak three: fine copper dust. Every gram of fine copper that leaves with the dust collector is money you already paid for. Keep an eye on the dust stream; it should be visibly free of red.
Ten minutes a day with a sieve and a magnet at the discharge tells you whether the line is drifting before the monthly numbers do. Set the habit and you will catch most quality problems early.
4. Sell the grade you actually produce - and know the basis
Buyers quote copper granules on purity, particle size, and moisture. Smelters and cable mills pay the best for clean, uniform, 99%+ product. Traders take lower grades at a discount. Before you agree on a price, confirm three things: the exact purity basis, the moisture allowance, and whether the price is per tonne of dry material.
Keep a sealed sample from every batch. If there is ever a dispute at the other end, that sample is your evidence.
The math that keeps you honest
A small example, with numbers you can plug into your own situation. Say you process 2 tonnes of mixed household wire a day at 50% copper content.
| Item | Amount |
|---|---|
| Feed cost (2 t × $3,300/t) | $6,600 |
| Labor + power | $150 |
| Copper recovered at 90% recovery (0.9 t × $7,200/t premium) | $6,480 |
| Insulation residue sold / disposed | +$100 |
| Daily result at 90% recovery | −$170 |
At 90% recovery this line loses money. Push recovery to 95% and hold purity at 99%+: 0.95 t × $7,200 = $6,840, and the day flips to about +$190. That is the whole business in two numbers: feed pricing, recovery, and purity decide everything. Equipment price matters far less than most people think.
Closing checklist
Sample five pieces before you quote a price on any new wire source.
Never feed a pile "to see what happens" - test a small batch first.a
Check discharge purity daily; grade sets your price.
Track monthly recovery. A 5% recovery gain is usually worth more than a 10% discount on the machine.
There is no magic in cable recycling. It is a chain of small, controllable decisions. Tighten each link, and the pile of wire at the gate starts behaving like what it really is: inventory.
Need help choosing the right stripping, granulating or separation equipment for your specific wire mix? RJ Mechanical builds copper wire recycling lines from single machines to complete turnkey setups - send us your material photos and daily volume, and we will work out the line and the numbers with you.
If you have any questions, such as "How do I choose equipment for my new recycling plant, and which model should I choose?", "How long does it take to customize a machine?", or "Is the export customs clearance process complicated?", please feel free to contact us. We will recommend the most suitable model based on your specific business needs, site size, and budget, and provide one-on-one customized solutions to help you "turn waste into treasure" and easily generate profits!
Contact information
Contact name: Jonathan Lee
Email: sales01@rjrecyclingequipment.com
Cell phone: +86 183 9200 1872
Whatsapp: +86 183 9200 1872