What type of methods have you seen?I've seen interesting methods that don't require entirely dissolving the substrate metal. I'm working on one that is best for me. I have gold filled jewelry and other items, and e-scrap, a lot of it military.
What type of methods have you seen?I've seen interesting methods that don't require entirely dissolving the substrate metal. I'm working on one that is best for me. I have gold filled jewelry and other items, and e-scrap, a lot of it military.
Thanks! I checked and they are either magnetic or seminagnetic.good find - if they are magnetic, 99% sure it's gold plate over nickel. Easy to process with AR.
If they aren't magnetic, may be gold plate over brass, copper or aluminum. Still easy to process with AR.
Thanks. What was your yield for military grade pins?Yes - and again, check if they are magnetic. That will at least be an easy test if they are plated, and an idea of what base metal.
Either way, a good bath in AR will dissolve everything eventually, and then just precipitate out the gold.
Kinda like the military-grade pins I have. The plating is so thick it holds it's tube-shape when all the base metal is gone. Tends to make them float cuz they get gas bubbles stuck inside. I have to squish them with a stirring rod to make them sink, and they sink FAST! Straight to the bottom.& for what it is worth - the highest yield pins I have ever seen ran about 12 grams per kilo --- the came out of "old" microwave gear
Edit to add; - the plating was so thick I had to boil them in nitric in order for the acid to get under the gold & dissolve the brass away
Kurt
Welcome to us.Need help identifying this type of scrap quaestion two
strong magnesium from the hard drive reacts only in place of the blue circle
I think it's imprint from an orange line from gold-plated rods
red circle probably connecting
origin hewelt packard in germany year 1994 orange tapes gray housings
stop or layer or nordic gold ???
as well as the yellow line, the magnet reacts slightly to these two elements
layer gold stop rather not or maybe nordic,
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These are not of any value, they are aluminum or some other base metal alloy.another question about the type of metal, four photos yellow line, red cross photo of the whole, Is there gold in it? silver color ram and bios socket, what type of metal was it made of? it definitely contains nickel and iron, because strong magnesium attracts it single pins, branded connectors amphenol, board ibm and cisco, maybe it contains silver? or it is the so-called white gold? for the day now not have any acid,
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I tested some of those, as I test everything once. No trace of PMs at all. Likely tin-plated as adding nitric to the HCl dissolve created the dreaded goo!These are not of any value, they are aluminum or some other base metal alloy.
If they are fully plated with Gold they may have some value.
And please check your spelling, Magnesium is a metal and Magnets are what you refer to.
It's a combi of Tin ones and Nickel ones Alondro. Old EDO RAM type stuff.I tested some of those, as I test everything once. No trace of PMs at all. Likely tin-plated as adding nitric to the HCl dissolve created the dreaded goo!
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