using AP method for gold filled

[anachronism]

Not quite Upcyclist old friend. I get the analogy however you can happily melt 4-5 ounces using a Oxy/Acetylene smith welding torch head- even the small one.

Apologies

Jon

 

[g_axelsson]

Jon, I think he is talking about something like this.
https://www.riogrande.com/Product/smith-little-torch-propane-and-oxygen-set-for-disposable-tanks/500090

Göran

 

[upcyclist]

Jon, I think he is talking about something like this.
https://www.riogrande.com/Product/smith-little-torch-propane-and-oxygen-set-for-disposable-tanks/500090

Göran

That is exactly the one I meant--I said "mini torch", but have since corrected it to "Little Torch". It's a jeweler's torch, and most jewelers use a small head for silver soldering.

 

[anachronism]

Ahhhh fair comment lads- 8) 8)

Jon

 

[Shark]

Been thinking about the original post lately and decided to give it a small test when I ran across a pair of eyeglasses marked 1/25 18KGE rolled gold. (May have been gold rolled, not sure now )

Day 2
[youtube]http://www.youtube.com/watch?v=2WNFGHeSUNU[/youtube]

Day 3
[youtube]http://www.youtube.com/watch?v=gWuJLSksp0Y[/youtube]

Day 5
[youtube]http://www.youtube.com/watch?v=UVZeP2Q_ZN4[/youtube]



I feel an aggressive air pump is very helpful. As well, I think an oxygen concentration is a plus. In this case I am using a nebulizer and it seemed to work noticeably better than the old fish aquarium pumps. I started this using fresh HCl and 1/4 ounce of old AP.

 

[upcyclist]

That green on day 2 with only a quarter ounce of CuCl₂? Impressive! I haven't messed with copper chloride much, so I didn't know you could use such a small amount to kickstart some HCl.

 

[Shark]

I think the biggest problem most new people have with AP is not using enough of it to do the job. Combine that with just letting it sit and it becomes even slower. Using a good amount of the AP combined with the aggressive agitation of a good pump and things really get to working.

 

[Shark]

I am a bit hesitant about posting this last one as it has several things that should have been done more carefully. But here it is, just to see the project through to the end. I combined several short video's just to make it easier to upload.

[youtube]http://www.youtube.com/watch?v=wCL0-o0GjXM&t=69s[/youtube]

 

[Ritchbitch]

I'm pretty sure your friend meant to add more precipitant after our gold first drops as to be sure all the gold is drawn out of your solution. Correct me if i'm wrong but that's what I would do regardless if my stannous came back negative. there usually is a little more in there. i DON'T rinse over the remaining filtered solution as to not dilute it too much. I used to do that till i did my stock pots and pulled 4 grams out of one 2 gallon bucket. we do amature things when we are amateurs... but we weren't born knowing this stuff

 

[g_axelsson]

Very dark solution after dropping the gold. Are you using copperas to reduce the gold back to metal?

Göran

 

[Shark]

Very dark solution after dropping the gold. Are you using copperas to reduce the gold back to metal?

Göran

Yes, I used coppers, it was handiest at the time and needed using up since it had been sitting for a while..