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Originally Posted by
alloy2
The brush's I have contain 70% silver, not all types of brushes contain silver.
Depending on application silver content can go as high 95% silver.
SILVER GRAPHITE
Silver graphite has a material content of 8 – 95% silver. The added conductivity and lower voltage drop, allows metal graphite brushes to operate at very high current densities and low voltages.
https://www.helwigcarbon.com/service...e-information/
Interesting link. I guess it all comes down to knowing exactly what kind of brush was used in the machine that it came out of. That's kinda hard to do ... ya know ?
You are probably looking at the big money, highly sophisticated stuff, like generators in power plants and large electrical motors found in industry. A random box of graphite brushes could be most anything.
Anyhow ... talk is just talk. It don't amount to much really. It's that actual doing it from start to finish that matters most. I hope it works out for you. It would be a good money scraping thing if it can be made to work. Even lower yields would be a nice little side gig for an older gent that knows how to do the refining.
ETA : Just a suggestion .... but it's something you might want to keep to yourself if it does pan out. It seems like anytime people get the idea in their head that money is involved ... they all want to get in on the act.
The less competition you have for the resource ... the better.
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