Salt precipitation

[4metals]

Your filter is less than optimal so it entirely possible that silver chloride made it through the filter and into the acid awaiting precipitation. Did the ammonia rinse leave any indication of silver chloride when you rinsed the first precipitates and added Hydrochloric Acid? And did it clean up the precipitate?

Also the residue in the drum has a very similar look to it as the precipitate does. Again questioning filtration efficiency.

 

[Ahk]

Your filter is less than optimal so it entirely possible that silver chloride made it through the filter and into the acid awaiting precipitation. Did the ammonia rinse leave any indication of silver chloride when you rinsed the first precipitates and added Hydrochloric Acid? And did it clean up the precipitate?

Also the residue in the drum has a very similar look to it as the precipitate does. Again questioning filtration efficiency.

How can I increase the efficacy of my filtration I’m using cotton and a funnel as I don’t have a proper vaccum. I’m about to do the ammonia rinse on the precipitate in a couple hours…the wife has me running around at the moment. I will give everyone a shout as soon as I do it and will update with pics as well

 

[Ahk]

Your filter is less than optimal so it entirely possible that silver chloride made it through the filter and into the acid awaiting precipitation. Did the ammonia rinse leave any indication of silver chloride when you rinsed the first precipitates and added Hydrochloric Acid? And did it clean up the precipitate?

Also the residue in the drum has a very similar look to it as the precipitate does. Again questioning filtration efficiency.

Thank you a lot for all the help I really appreciate it more than y’all know

 

[adam mizer]

I'm curious, about your starting material.
By seeing that sand looking stuff, leads me to believe you did not wash these connectors..
Appears you just pulled them out of a dirt pile (sort of).

 

[Yggdrasil]

Thank you a lot for all the help I really appreciate it more than y’all know

I agree with Adam, there is something off with your material.

Can you give a detailed description please?
Did you add something not in the pictures or else described?

 

[4metals]

If you lack a decent filter and vacuum try to decant the top layers of pregnant acid off to another vessel, let it settle again and if there is sediment repeat. Eventually clean top acids can be processed and the bottom fraction filtered.

 

[Ahk]

I agree with Adam, there is something off with your material.

Can you give a detailed description please?
Did you add something not in the pictures or else described?

Ok no problem I took a bunch of pins from the ram slots from a couple of servers a bunch of connector pins I cut off of the wires equaled out to about 4lbs. I then took all of the material and put it all into a bucket covered with 1000ml water then added 900ml muriatic acid and 300ml of nitric then it it cook, the reaction stopped so I added more and did it one more time. I then drained the solution through a colander and a doubled t shirt to strain through. So then I used urea to neutralize the acid and added in my opinion wayyyy to much SMB. It doesn’t develop the crystals until I boil the solution

 

[Ahk]

I'm curious, about your starting material.
By seeing that sand looking stuff, leads me to believe you did not wash these connectors..
Appears you just pulled them out of a dirt pile (sort of).

You’re correct I didn’t wash them properly beforehand ughhhh

 

[Ahk]

I just filtered this and this is the cotton

 

[Ahk]

So I was thinking is there anyway to just put everything back into solution

 

[anarxi]

I use paper cosmetic tissues as a filter.
need to filter many times.
some of the plastic could have crumbled in there.

 

[Ahk]

I use paper cosmetic tissues as a filter.
need to filter many times.
some of the plastic could have crumbled in there.

That’s true just starting out is so fun but so complicated lol. I actually love it so interesting

 

[Ahk]

Ok so I left the precipitate in ammonia for about 4hrs and nothing went into solution

 

[Yggdrasil]

Ok no problem I took a bunch of pins from the ram slots from a couple of servers a bunch of connector pins I cut off of the wires equaled out to about 4lbs. I then took all of the material and put it all into a bucket covered with 1000ml water then added 900ml muriatic acid and 300ml of nitric then it it cook, the reaction stopped so I added more and did it one more time. I then drained the solution through a colander and a doubled t shirt to strain through. So then I used urea to neutralize the acid and added in my opinion wayyyy to much SMB. It doesn’t develop the crystals until I boil the solution

One thing is sure you used way to much Nitric, you used enough nitric in your first step to dissolve 300g of pure Gold.

What we usually do is to dissolve the base metals first, then we dissolve the Gold.
Next, you do not neutralize the Nitric you decompose/deNOx it and Urea is not the best option.
The best option is to not overuse the Nitric, next is to use Sulfamic acid but that needs heat.

The reason the SMB did not work can be many things.
Overusing the Urea can neutralize the solution bringing the pH to close to 7, SMB needs an acidic milieu around 2 or even lower is best.
Too much Nitric in the solution will cause the Gold to redissolve immediately.
In this case the amount of Gold will be next to invisible so it may have dropped without you seeing it.

Trinity is not the best videos to learn from, we have a dedicated video section now in the Library
https://goldrefiningforum.com/threa...our-visual-learning-members.35185/post-379931

 

[Yggdrasil]

I just filtered this and this is the cotton

This looks like Metastannic acid,
which is a Tin compound that forms when Nitric comes in touch with Tin.

 

[Yggdrasil]

So I was thinking is there anyway to just put everything back into solution

Yes, but that depends on what you have here.
Metastannic acid needs to be dried roasted and dissolved in HCl.

 

[Yggdrasil]

Ok so I left the precipitate in ammonia for about 4hrs and nothing went into solution

That means there is no Silver or Copper in there.
And there usually are no Silver in these kind of pins.

 

[Yggdrasil]

So I was thinking is there anyway to just put everything back into solution

The first thing to do is to make sure there is no Gold in solution.
Make sure your solution is acidic then place a solid piece of Copper in there and stir it often.
After a day or so brush the copper piece properly so there is no residue on it.
Let the liquid sit until all solids has settled, siphon off as much liquid as possible and set aside the remains.

Then I'd suggest you dissolve what you can of the rest in plain Water first, Hot.
Then filter well and dissolve what you can with HCl.
Roast it to a dull red and dissolve what you can in dilute Nitric 50/50ish.
If you still have solid residues this is where your Gold will be.
Combine the first fraction from the cementing with what ever residues there was from the washing and dissolve in AR (HCl plus a few drops/ml Nitric, drop the 1:3) or HCl/Peroxide HCl/Chlorine.
Drop with the method of choice.

When this is done I suggest you start some proper studying and ask before you venture into a new project again.

 

[joshu705]

One thing is sure you used way to much Nitric, you used enough nitric in your first step to dissolve 300g of pure Gold.

What we usually do is to dissolve the base metals first, then we dissolve the Gold.
Next, you do not neutralize the Nitric you decompose/deNOx it and Urea is not the best option.
The best option is to not overuse the Nitric, next is to use Sulfamic acid but that needs heat.

The reason the SMB did not work can be many things.
Overusing the Urea can neutralize the solution bringing the pH to close to 7, SMB needs an acidic milieu around 2 or even lower is best.
Too much Nitric in the solution will cause the Gold to redissolve immediately.
In this case the amount of Gold will be next to invisible so it may have dropped without you seeing it.

Trinity is not the best videos to learn from, we have a dedicated video section now in the Library
https://goldrefiningforum.com/threa...our-visual-learning-members.35185/post-379931

Trinity Gold videos is what end up bringing me to this forum. And now that I start reading hokes book, reading on this forum for the past few months, I'm proudly getting good clean gold every time. Still in small amounts as I'm doing small experiments. But with a fraction of the chemicals that are suggested in his videos. Which in the end means less waste to process safely

 

[Ahk]

One thing is sure you used way to much Nitric, you used enough nitric in your first step to dissolve 300g of pure Gold.

What we usually do is to dissolve the base metals first, then we dissolve the Gold.
Next, you do not neutralize the Nitric you decompose/deNOx it and Urea is not the best option.
The best option is to not overuse the Nitric, next is to use Sulfamic acid but that needs heat.

The reason the SMB did not work can be many things.
Overusing the Urea can neutralize the solution bringing the pH to close to 7, SMB needs an acidic milieu around 2 or even lower is best.
Too much Nitric in the solution will cause the Gold to redissolve immediately.
In this case the amount of Gold will be next to invisible so it may have dropped without you seeing it.

Trinity is not the best videos to learn from, we have a dedicated video section now in the Library
https://goldrefiningforum.com/threa...our-visual-learning-members.35185/post-379931

Wow yeah see that’s the problem with just watching videos, I found out about Hokes book right after I started

One thing is sure you used way to much Nitric, you used enough nitric in your first step to dissolve 300g of pure Gold.

What we usually do is to dissolve the base metals first, then we dissolve the Gold.
Next, you do not neutralize the Nitric you decompose/deNOx it and Urea is not the best option.
The best option is to not overuse the Nitric, next is to use Sulfamic acid but that needs heat.

The reason the SMB did not work can be many things.
Overusing the Urea can neutralize the solution bringing the pH to close to 7, SMB needs an acidic milieu around 2 or even lower is best.
Too much Nitric in the solution will cause the Gold to redissolve immediately.
In this case the amount of Gold will be next to invisible so it may have dropped without you seeing it.

Trinity is not the best videos to learn from, we have a dedicated video section now in the Library
https://goldrefiningforum.com/threa...our-visual-learning-members.35185/post-379931

oh wow I thought something was wrong with the amount of nitric. I didn’t know there was a video section here, thank you so much for taking the time to look through the steps I took and let me know what I did wrong. If a new member sees this post, you have found the right place my friend there is a wealth of knowledge. Thank you so very much this forum is amazing with amazing people I have a lot of studying to do