I'm trying to search for past threads about separating valuables from the by products of HCl and solder. Can someone please direct me as I'm guessing someone has posted on this in the past.
I've searched using the following two phrases:
1. Separating gold from solder
2. Separating gold from lead cloride
It's possible I miss it but I didn't see anything that answered my question.
Here is why I'm asking. I removed solder from gold plated printed circuit boards and gold pins etcetera, using HCl. Over time I've saved the reagents and now would like to recover the small amount of gold that was suspended in the solder.
I have a fairly clear solution with white salt precipitation along with a small amount dark precipitation (gold?) I'd like to separate the two and process. Lead cloride is slightly soluble in hot water but it would take a huge amount of water and then there is a lot of clean up. So I'm wondering the best way to proceed.
It isn't much gold so I'm mostly interested in the education
Thanks in advance for any direction
I've searched using the following two phrases:
1. Separating gold from solder
2. Separating gold from lead cloride
It's possible I miss it but I didn't see anything that answered my question.
Here is why I'm asking. I removed solder from gold plated printed circuit boards and gold pins etcetera, using HCl. Over time I've saved the reagents and now would like to recover the small amount of gold that was suspended in the solder.
I have a fairly clear solution with white salt precipitation along with a small amount dark precipitation (gold?) I'd like to separate the two and process. Lead cloride is slightly soluble in hot water but it would take a huge amount of water and then there is a lot of clean up. So I'm wondering the best way to proceed.
It isn't much gold so I'm mostly interested in the education
Thanks in advance for any direction