One of the scrap yards I deal with a lot has the remnants of a drum of copper powder. There's probably 20-30 lbs left in there. It's approximately 200-300 mesh? (hard for me to estimate)
I'm paying $3.00 / lb, and if just a few people want a pound or two in a zip lock bag sent via flat rate box, I'd be happy to just sell it at cost.
They've just been dumping it in their #2 copper a half gallon at a time.
I mixed a little in nitric just to make sure I seemed to get a nice reaction, which I did. I also sprinkled some onto some silver nitrate I've got sitting in my hood, which again gave a reaction, though it did clump a little. I got it mostly to speed up some cementation of dirty solutions with a little too much nitric (not that any of us EVER do that)
I will also be getting it shot with XRF before purchasing any more than what I have, just to make sure there's not any nasties in it.
I'm paying $3.00 / lb, and if just a few people want a pound or two in a zip lock bag sent via flat rate box, I'd be happy to just sell it at cost.
They've just been dumping it in their #2 copper a half gallon at a time.
I mixed a little in nitric just to make sure I seemed to get a nice reaction, which I did. I also sprinkled some onto some silver nitrate I've got sitting in my hood, which again gave a reaction, though it did clump a little. I got it mostly to speed up some cementation of dirty solutions with a little too much nitric (not that any of us EVER do that)
I will also be getting it shot with XRF before purchasing any more than what I have, just to make sure there's not any nasties in it.