PARKER113
Well-known member
Hello everyone.
I'd like to start a new thread called AP Gold Pin Process question.
I've only started reining on a small scale for a few months. I have done a few small batches of low grade (25 grams), medium grade (35 grams) and my last batch, high grade gold pins (60 grams) All mixed non magnetic.
The first few batches were a bit tedious while separating the foils from the pins.
The base metals would dissolve about 50% and 85% of the pins would be stripped.
I would pour off as much as I could through a filter which emptied into a used AP jug, then I would transfer the filter to a water rinsing container and spray the gold pin bearing container through the filter.
But as you guys probably already know it's tough to separate gold foils from small dissolving pins. And adding water to these pins only created white crystals which dissolved with a bit of hcl. Since I have a few 1 liter jugs of used AP I now use them to add more liquid to the high grade pin container to decant. I now swish it around and decant into the foil beaker. And do that a few times until the majority of the foils are out.
Then added more Hcl to dissolve the remaining foils. A few days later when 99% of the base metals from the pins dissolved I decanted and picked out the 3 or 4 small pins that didn't dissolve.
With the last batch of high grade gold pins (60 grams, non magnetic mixed pins) I just let them sit for a few extra days until 99% of the pins had dissolved. (4 days in total)
I didn't filter any of the solution, after reading more on here I thought it wise to only use the filter once after dissolving the gold.
I ended up decanting the pin bath several times into my 1000 ml beaker, using the used AP solution and then sprayed out the container with water into the same beaker.
After waiting a day I still see lots of gold floating through out the solution. Could you guys suggest a way for the gold to settle?
And if my procedures were incorrect and inefficient please do shine some light.
I plan on dissolving the foils in this beaker and dropping the gold with Smb. Saving the powder until I find the means to melt efficiently.
Ps. I bought this beaker at a brewery supply store for $17. It doesn't say Pyrex, or anything to do with heat. Is anyone familiar with this beaker, and it's it safe to boil with?
Thanks!
Peter
I'd like to start a new thread called AP Gold Pin Process question.
I've only started reining on a small scale for a few months. I have done a few small batches of low grade (25 grams), medium grade (35 grams) and my last batch, high grade gold pins (60 grams) All mixed non magnetic.
The first few batches were a bit tedious while separating the foils from the pins.
The base metals would dissolve about 50% and 85% of the pins would be stripped.
I would pour off as much as I could through a filter which emptied into a used AP jug, then I would transfer the filter to a water rinsing container and spray the gold pin bearing container through the filter.
But as you guys probably already know it's tough to separate gold foils from small dissolving pins. And adding water to these pins only created white crystals which dissolved with a bit of hcl. Since I have a few 1 liter jugs of used AP I now use them to add more liquid to the high grade pin container to decant. I now swish it around and decant into the foil beaker. And do that a few times until the majority of the foils are out.
Then added more Hcl to dissolve the remaining foils. A few days later when 99% of the base metals from the pins dissolved I decanted and picked out the 3 or 4 small pins that didn't dissolve.
With the last batch of high grade gold pins (60 grams, non magnetic mixed pins) I just let them sit for a few extra days until 99% of the pins had dissolved. (4 days in total)
I didn't filter any of the solution, after reading more on here I thought it wise to only use the filter once after dissolving the gold.
I ended up decanting the pin bath several times into my 1000 ml beaker, using the used AP solution and then sprayed out the container with water into the same beaker.
After waiting a day I still see lots of gold floating through out the solution. Could you guys suggest a way for the gold to settle?
And if my procedures were incorrect and inefficient please do shine some light.
I plan on dissolving the foils in this beaker and dropping the gold with Smb. Saving the powder until I find the means to melt efficiently.
Ps. I bought this beaker at a brewery supply store for $17. It doesn't say Pyrex, or anything to do with heat. Is anyone familiar with this beaker, and it's it safe to boil with?
Thanks!
Peter