Help with potential profits of RAM scrap

[anachronism]

In fact some of us prefer to not use peroxide. With an air bubbler peroxide is just another chemical we can get by with out. Keep it simple when possible.

True. It sets itself off quite nicely if you simply leave it.

 

[rickbb]

The only need for peroxide is a capful to kick start the process, after that no more is required. And even then, only the household 3% stuff works to get it moving.

 

[sidematic]

Jeśli przyjmiesz dokładnie tę samą mieszankę, co osoba na filmie.
Wystarczy, że policzysz 0,6 grama na kilogram i ustalisz stawkę rynkową zgodnie z tą wartością.
Nadal jestem ciekaw, skąd wziąłeś liczbę 0,13%, skoro w rzeczywistości było to około 0,6%, mniej więcej?
Jednak w prawdziwym życiu możesz otrzymać cokolwiek.
Czy to jest Ebay?

Pomylił kilogramy z funtami i wyszło mu 0,13%.

 

[Yggdrasil]

Pomylił kilogramy z funtami i wyszło mu 0,13%.

Welcome to us.
But in English please

 

[mr.data]

So I am finally at the next step dissolving the gold into Aqua Regia.
It seems that my gold is dissolving but the filter paper isn't.
Do I need to increase the ratios or am I using the wrong coffee filter?

 

[Yggdrasil]

So I am finally at the next step dissolving the gold into Aqua Regia.
It seems that my gold is dissolving but the filter paper isn't.
Do I need to increase the ratios or am I using the wrong coffee filter?
View attachment 65706

Coffe filter is not good for refining.
It should decompose but your AR need to be hot.

 

[mr.data]

Coffe filter is not good for refining.
It should decompose but your AR need to be hot.

Its for the lack of better equipment right now.

The beaker is at 60 degrees. Do you think the solution needs to be hotter?
Also after an hour the filter starts to decompose

 

[Yggdrasil]

Its for the lack of better equipment right now.

The beaker is at 60 degrees. Do you think the solution needs to be hotter?
Also after an hour the filter starts to decompose

How did you prepare the AR?
Almost boiling at least 70-80C and then time.
Magnetic stirring helps too.

 

[mr.data]

How did you prepare the AR?
Almost boiling at least 70-80C and then time.
Magnetic stirring helps too.

Because it’s my first time working with nitric acid I thought I take it slow.
I dropped the filter paper containing the gold foils into a beaker.
Then I added 50ml of 30% HCl and 6ml of 53% HNO3.
I waited a bit and the color started to change. After about an hour I added 6ml of nitric.
Then I put everything on a low heat to speed up the reaction.
In total I added 18ml of nitric and it’s been on heat now for about 2 hours.
The paper is dissolving but very slow but since I am not used to work with these solutions I want to take some extra precautions to get familiar with the process

 

[Yggdrasil]

Because it’s my first time working with nitric acid I thought I take it slow.
I dropped the filter paper containing the gold foils into a beaker.
Then I added 50ml of 30% HCl and 6ml of 53% HNO3.
I waited a bit and the color started to change. After about an hour I added 6ml of nitric.
Then I put everything on a low heat to speed up the reaction.
In total I added 18ml of nitric and it’s been on heat now for about 2 hours.
The paper is dissolving but very slow but since I am not used to work with these solutions I want to take some extra precautions to get familiar with the process

Good plan and I think there is plenty Nitric.
But you should have at least 70C maybe more.
But don't let it boil.
Vigorous stirring like from a magnetic stirrer will help.

 

[mr.data]

Good plan and I think there is plenty Nitric.
But you should have at least 70C maybe more.
But don't let it boil.
Vigorous stirring like from a magnetic stirrer will help.

I think the result is okay but I don’t have the chemicals to neutralize the solution.
Do you think I can try to precipitate with SMB or first order neutralizing agent?

 

[Yggdrasil]

View attachment 65714

I think the result is okay but I don’t have the chemicals to neutralize the solution.
Do you think I can try to precipitate with SMB or first order neutralizing agent?

You can do it the classical way.
Evaporate to a syrup then add HCl.
It might need to be done more than once.
Have you not red Hokes book yet??

 

[mr.data]

You can do it the classical way.
Evaporate to a syrup then add HCl.
It might need to be done more than once.
Have you not red Hokes book yet??

I started reading but I did not have the time to finish since I am reading a lot of chemistry books

 

[Yggdrasil]

I started reading but I did not have the time to finish since I am reading a lot of chemistry books

It is well described in her book.
The other method is to either cement it on Copper or if you already have a Gold button, you can weigh it and use it to use up the excess Nitric.
Then weigh it after and check how much is consumed.
If it is your Gold no need for this.

 

[joshu705]

You can do it the classical way.
Evaporate to a syrup then add HCl.
It might need to be done more than once.
Have you not red Hokes book yet??

One of the best pieces of information that I've got from this form is to read Hokes book! I have not read the whole book but I've been doing the small experiments step-by-step as they go in the book. Currently I have four little buttons of gold I still got two pots of crap from my first offense before I got on here and asked for help. But we'll work on that later lol.

 

[patnor1011]

I can buy this for € 50 per kg and I want to know if I can extract enough gold from it to be profitable.
The RAM sticks with heatsink can be sold seperately without having to extract the gold from it.

I know that averages are somewhat difficult to predict in general, would it be worth buying this if I don't calculate the cost of labor and acids for recovery?

That is some mix of everything and I thought I am selling mine bit expensive, yet my RAM is all laptop only, cleaned (stickers removed) and more than half is with BGA IC. From what I got from buyers they got 0.65g of gold from just fingers so that covered purchase price and whatever is in IC should be profit.

 

[mr.data]

My very first gold drop. Textbook clean!
Took a while but with reading tons of information and proceeding it turned out great.

Thanks for the help eveybody!

Now where do I store the excess aqua regia? I have a separate waste bucket for HCl where the base metals are leached in. Now I don't know if I drop this solution in it or should I keep it clean so it's easier to work with later on when I want to reuse the HCl?

 

[Yggdrasil]

View attachment 65948
My very first gold drop. Textbook clean!
Took a while but with reading tons of information and proceeding it turned out great.

Thanks for the help eveybody!

Now where do I store the excess aqua regia? I have a separate waste bucket for HCl where the base metals are leached in. Now I don't know if I drop this solution in it or should I keep it clean so it's easier to work with later on when I want to reuse the HCl?

The AR is deNOxed true?
Then it is not AR anymore since the Nitric is decomposed.
Then put it in a stock pot and when you have enough put in a Copper bar and let it Cement while bubbling for a few days.
Then let it settle and collect the slimes, they can contain valuables.

 

[mr.data]

The AR is deNOxed true?
Then it is not AR anymore since the Nitric is decomposed.
Then put it in a stock pot and when you have enough put in a Copper bar and let it Cement while bubbling for a few days.
Then let it settle and collect the slimes, they can contain valuables.

I think its denoxed because the Sulfamic Acid did not produce any reaction.
What I found curious was the pH of -0.5

 

[Yggdrasil]

I think its denoxed because the Sulfamic Acid did not produce any reaction.
What I found curious was the pH of -0.5

Why was that strange?