will ferrous sulphate drop the gold???

[Ayham Hafez]

If dissolved or not should not make much of a difference.
If it gets brown in water it might be oxidised and then it do not work.
Are you sure all the Nitric and NOx are destroyed?

Yes nitric is destroyed, I think its better just to avoid dissolve ferrous sulfate in water

 

[Anil]

Ferrous Sulphate dissolved in warm distill (or DM) water should work very well to precipitate Gold. The ferrous sulfate should be kept away from light and humidity and if possible keep it in dark colored glass bottle to prevent oxidation.

 

[Yggdrasil]

Yes nitric is destroyed, I think its better just to avoid dissolve ferrous sulfate in water

How do your Ferrous Sulfate look?
It is supposed to have a green clear color with no hint of brown in it.

 

[Ayham Hafez]

Ferrous Sulphate dissolved in warm distill (or DM) water should work very well to precipitate Gold. The ferrous sulfate should be kept away from light and humidity and if possible keep it in dark colored glass bottle to prevent oxidation.

When dissolving Ferrous sulfate in warm water, what is the color of the water will be look like?

 

[Yggdrasil]

When dissolving Ferrous sulfate in warm water, what is the color of the water will be look like?

Do you have access to Google?
If so, why not do some research yourself??
The crystals are green and the dissolved crystals are greenish.
If any other color, filter the solution until crystal clear add a few drops sulfuric and recrystallize or use directly.

 

[Anil]

It is always greenish in color.

When dissolving Ferrous sulfate in warm water, what is the color of the water will be look like?

It is greenish.

 

[Ehsan Ebrahiminia]

Hello
Honestly, I have a small gold extraction workshop from electronic waste. I also consult to increase the efficiency of gold and palladium extraction. Can anyone help me in the form of training and cooperation agreement?

 

[user 72646]

If you adjust the pH of your solution to neutral or on the alkaline side you will also begin to precipitate base metals and I would say it would probably be much easier to precipitate platinum.

I thought we were talking about the normal precipitation of gold from a solution like aqua regia (not salt water, or caustic salt water).

Here I did mention where you could precipitate platinum with copperas at pH 7 (salt water) But in practice I do not see any reason someone would want to.
http://goldrefiningforum.com/~goldrefi/phpBB3/viewtopic.php?f=48&t=11945&start=120

Hi
Where has this post gone?

http://goldrefiningforum.com/~goldrefi/phpBB3/viewtopic.php?f=48&t=11945&start=120. ??

I was interested in Ph levels being adjusted and how this could determine precipitation.

I ask because I added some urea to a solution and them SMB, and had a precipitation.
This was not the case with some solutions without the (accidental use of urea).

MM

 

[Yggdrasil]

Hi
Where has this post gone?

http://goldrefiningforum.com/~goldrefi/phpBB3/viewtopic.php?f=48&t=11945&start=120. ??

I was interested in Ph levels being adjusted and how this could determine precipitation.

I ask because I added some urea to a solution and them SMB, and had a precipitation.
This was not the case with some solutions without the (accidental use of urea).

MM

If it is for learning it may be good to read, and I can not find it either.

But if you still are working on the same project.
There should not be anymore Gold or PGMs in there.
A minute amount of Gold might have been in your initial leaches,
but there are no treason to expect neither Platinum or any appreciate amount of Palladium.
If there was, it would have been long gone in one of your cementations or pH yo-yo's.

 

[Thomas M Joseph]

Copperas, Iron II sulfate, ferrous sulfate...degrades with time, temperature and humidity. It degrades into Iron III sulfate and Iron III oxide-hydroxide. Degradation is noted by a color change from pale green cristals to whiteish, yellowish, to brownish appearance. It should not be used. Get fresh greenish crystals. Prepare a solution by adding 50 grams of fresh Iron II sulfate in 100 ml distilled water for every 7.5 grams of expected gold. The solution will be pale green but cloudy. Heat gently, do not boil. Titrate the cloudy solution with hydochloric acid, drop by drop, until it clears. Filter the solution through a medium filter paper to remove anything isoluble such as free iron contaminants. It is now ready to use.

 

[Meteoriterocks21]

It was probably an echo from repeating "iron sulphate".

Now, I have a question. Should we then use iron sulphate for precipitating the gold out of dirty solutions, instead of SMB?
Use SMB on "cleaner solutions"?

Phil

Yes, especially if you have copper and platinum. If you have more platinum than gold in solution, youd need to first precipitate platinum with ammonium chloride, and then proceed to the gold.

 

[Meteoriterocks21]

Copperas, Iron II sulfate, ferrous sulfate...degrades with time, temperature and humidity. It degrades into Iron III sulfate and Iron III oxide-hydroxide. Degradation is noted by a color change from pale green cristals to whiteish, yellowish, to brownish appearance. It should not be used. Get fresh greenish crystals. Prepare a solution by adding 50 grams of fresh Iron II sulfate in 100 ml distilled water for every 7.5 grams of expected gold. The solution will be pale green but cloudy. Heat gently, do not boil. Titrate the cloudy solution with hydochloric acid, drop by drop, until it clears. Filter the solution through a medium filter paper to remove anything isoluble such as free iron contaminants. It is now ready to use.

If it degrades on you, you can bring it back to life... dissolve your now brown crystals into a glass of warm water and add a tiny little bit of sodium metabisulfite, just a little, and it will reduce it back to the green Iron II state.

 

[Yggdrasil]

Yes, especially if you have copper and platinum. If you have more platinum than gold in solution, youd need to first precipitate platinum with ammonium chloride, and then proceed to the gold.

Welcome.
It depends on several factors.
Like how you process it later.
We often try to get the Gold out first.
Especially if there are Pd in the same.

 

[Yggdrasil]

If it degrades on you, you can bring it back to life... dissolve your now brown crystals into a glass of warm water and add a tiny little bit of sodium metabisulfite, just a little, and it will reduce it back to the green Iron II state.

Never heard about that.
We usually clean it up with HCl and filter it.
Or just buy new, it is cheap.

 

[Meteoriterocks21]

Never heard about that.
We usually clean it up with HCl and filter it.
Or just buy new, it is cheap.

The beauty of chatGPT. It will tell you any coveted information. We can all kiss Hokes book Goodbye lol

 

[Meteoriterocks21]

Welcome.
It depends on several factors.
Like how you process it later.
We often try to get the Gold out first.
Especially if there are Pd in the same.

I was talking to a gentlemen on fb who said his material is 3/2 platinum/gold... And that he can't precipitate his gold unless he lowers his platinum (iridium, platinum, and rhodium) content to at least a 2/2... So he precipitates his platinum first to reduce the platinum content of solution, and then precedes with the gold.

 

[Yggdrasil]

The beauty of chatGPT. It will tell you any coveted information. We can all kiss Hokes book Goodbye lol

I wont trust Chat GPT or other similar services further than I can throw them.
They have no reasoning ability, so they are virtually advanced parrots.

 

[Yggdrasil]

I was talking to a gentlemen on fb who said his material is 3/2 platinum/gold... And that he can't precipitate his gold unless he lowers his platinum (iridium, platinum, and rhodium) content to at least a 2/2... So he precipitates his platinum first to reduce the platinum content of solution, and then precedes with the gold.

Never heard about interference like this with PGMs.
I would expect some drag down though.
Lets see what the PGM gurus say.

 

[Yggdrasil]

When that is said, these AI tools are formidable diggers and find anything open on the net.

 

[Meteoriterocks21]

I wont trust Chat GPT or other similar services further than I can throw them.
They have no reasoning ability, so they are virtually advanced parrots.

in the beginning I didn't trust it, so I'd come here to verify, and legit everything it was telling me was true. The only thing it gets confused about sometimes and contradicts itself on is selective refining of metals with electrolysis. Guess there's not much info out there on it, but I was able to gather bits and pieces.. and piece them together though. you should give it a try. Its an awesome tool.