Smelting gold

[Corro69]

My blob has a grey/black color to it. Even the borax glass is black. Any idea why and how to remedy this?

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[FrugalRefiner]

Corro, welcome to the forum. Your images are too large to be displayed. You need to reduce the width to less than 1,400 pixels wide.

Dave

 

[Corro69]

How to I edit my post? Lol

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[FrugalRefiner]

Look for an icon that looks like a pencil or something similar.

Or you can just make a new post with the pics.

Dave

 

[jimdoc]

What exactly does "My blob" consist of?
Did you buy it from Ebay?

 

[Corro69]

Gold recovery from ram fingers and CPU in Ap solution. Then Used muratic acid and nitric acid to dissolve gold and stumpout to drop the gold

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[Corro69]

What exactly does "My blob" consist of?
Did you buy it from Ebay?

Gold foil from finger and CPU that I recovered myself using ap. Refined using aqua regia. Stumpout was used to drop the gold.

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[jimdoc]

What type CPU's and how many? And how many ram fingers?
You should have done the fingers and CPU's separate.

 

[Corro69]

About 470 fingers. Then 25 processors. Gold from the 2 batches were then combined

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[Corro69]

The cpus were original pentium and a few other ceramic and some green fiber.

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[jimdoc]

Looks like you still have base metals in there to me.
You probably rushed things with the CPUs before the base metals were all gone.
Even mixing CPU types is a mistake.

 

[Corro69]

Looks like you still have base metals in there to me.
You probably rushed things with the CPUs before the base metals were all gone.
Even mixing CPU types is a mistake.

How can I remedy this?

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[solar_plasma]

There is a good chance, that you coprecipitated copper by using too much SMB. A way to avoid this, is to add not much more than a good gramm SMB per gramm gold expected. Then check with stannous chloride if more SMB is needed.

As far as I understand from your description (if it is comlete) you did some other mistakes. Where did you learn the process?

Did you wash the gold? How did you wash?

 

[Corro69]

Youtube lol

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[anachronism]

There is a good chance, that you coprecipitated copper by using too much SMB. A way to avoid this, is to add not much more than a good gramm SMB per gramm gold expected. Then check with stannous chloride if more SMB is needed.

As far as I understand from your description (if it is comlete) you did some other mistakes. Where did you learn the process?

Did you wash the gold? How did you wash?

Bjorn Hi

If you clean your gold in HCl then any copper coming out with the SMB by way of drag down is virtually eliminated. It never brings that much down anyway no matter how much SMB you use. Looking at the crucible, no washing of the gold was done at all.

Jon

 

[Corro69]

I rinsed with distilled water

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[anachronism]

You need to look up the washing procedures on here Corro. Alternated HCl/water washes will remove the vast majority of base metals from your gold.

Hope that helps.

Jon

 

[Corro69]

Ok. Thank you

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[anachronism]

My pleasure.

 

[Corro69]

My pleasure.

What about my current blob? Lol. Drop it back onto aqua regia?

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