2nd refining

[itswillist]

I was curious, I did the Aq Reg. And precipitated gold out
And have around 6 coffee filters saved up now of gold to be
Melted. But I kind of wanted to do one more bath in dilute
Nitric to purify the remaining gold in the filters.. I just want to
Confirm the dilute nitric won’t dissolve the gold even though
There will be almost no other metals to dissolve into the nitric..

 

[FrugalRefiner]

It is likely there are still chloride ions in the precipitate, filter papers, etc. Adding nitric will create a bit of aqua regia and dissolve a bit of gold. If you really want to clean it up, redissolve it all and do another drop.

Dave

 

[Martijn]

I only filter twice. Once to separate the gold from a recovery step and once after dissolving the gold and chilling the gold solution.
The gold stays in the beaker or flask to get precipitated, decanted and washed according these steps: "getting shiny gold"
https://goldrefiningforum.com/phpBB3/viewtopic.php?f=49&t=325
And dried in a beaker. Then melt as described in the same post.
Good luck getting that shiny button with a nice pipe. :G
Martijn.

 

[itswillist]

Thank you both for your replies.. still learning here, but
Getting better as time goes on ..