Copper Recovery from Cables: Profitability, Auction Link, YKY 5x16 Cable, 1mb=1kg, Copper Weight

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#31 12812697 05 Oct 2013 21:38

pawello54 pawello54

Level 2

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Post #31
12812697 05 Oct 2013 21:38

the density of copper is 8950 kg/m3, the surface area of the conductor is 70 mm2, the height is 1000 mm, which would give 70,000 mm3 multiplied. 1 m 3 is 1,000,000,000 mm3 and weighs 8,950 kg is 70,000 mm3 weigh x? I graduated from technical school there. That's all reduced to 0.6265 kg. please correct me if i'm wrong.
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#32 12812727 05 Oct 2013 21:50

Anonymous Anonymous

Anonymous

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Post #32
12812727 05 Oct 2013 21:50

Futrzaczek wrote:

DJ Max wrote:

You can get used to plucking cables, find a technique and, above all, a place for this work ... Oh, and you need thick gloves and a knife.

But why?
I put the cable scraps in the oven, mix it with some balls of paper and ignite it. The boiler (120l) is heated up and even faster. The fire is also good. I tried to pluck cables once, but it's not on my nerves...

This is probably a moderately good idea considering the current state of the environment. You can get fine too Picking with good tactics is acceptable, but you need to be persistent and have the right tools.
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#33 12813287 06 Oct 2013 02:36

DJ MHz DJ MHz

Level 25

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Post #33
12813287 06 Oct 2013 02:36

China doesn't care
#34 12813894 06 Oct 2013 11:46

c4r0 c4r0

Level 36

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Post #34
12813894 06 Oct 2013 11:46

pawello54 wrote:
the density of copper is 8950 kg/m3, the surface area of the conductor is 70 mm2, the height is 1000 mm, which would give 70,000 mm3 multiplied. 1 m 3 is 1,000,000,000 mm3 and weighs 8,950 kg is 70,000 mm3 weigh x? I graduated from technical school there. That's all reduced to 0.6265 kg. please correct me if i'm wrong.

I'm not a super electrician, but doesn't this cable designation mean 3x120mm²+1x70mm²? Then you have 430mm². You convert to meters, so you divide by 1,000,000, then you multiply by 1m, and you have volume, which you multiply by density. It comes out to less than 4 kg per running meter.
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Topic summary

The discussion revolves around the profitability of recovering copper from YKY 5x16 cables, as referenced in an auction link. Participants analyze the cost of the cable, which is priced at PLN 21.90 per meter, and estimate that stripping the insulation yields approximately 0.7 kg of copper per meter. For profitability, the selling price of copper would need to exceed PLN 30 per kg. Various methods of copper recovery are discussed, including stripping cables and dismantling old transformers or motors, with some participants expressing skepticism about the effort versus profit ratio. The conversation also touches on alternative sources of copper and the challenges associated with the recovery process.
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