Hello guys.
Any suggestion welcome.
We have trouble with refining 20kg of connectors.
I clean them and leave them in HCL to remove SN from surface.
After that we us AR solution. Connectors dissolve, we wash plastic and filter solution.
I use sulfamic acid to neutralize Nitric like i use always. Solution is dark,dark green. After that i add whater to solution and add some SMB diluted i little quantity of water.
I leave that 24h but nothing happen, i tried to add more smb but still no reaction . I toke sample and try to ad ferrous sulfate but also no reaction.
Then i cemented all with ALU foil to see what i will get.
I wash and dry slug that i got from solution and i have analyze the dust.
I get readings from the picture.
Connectors :
https://ibb.co/JHRfPmj
XRF :
https://ibb.co/Jm6DxX7
I still have approx. 25-30l of diluted AR.
Why do think that i failed , is it because Sn or? And what you suggest me to do next wit the solution?
How to extract Au with no big losses?
Any suggestion welcome.
We have trouble with refining 20kg of connectors.
I clean them and leave them in HCL to remove SN from surface.
After that we us AR solution. Connectors dissolve, we wash plastic and filter solution.
I use sulfamic acid to neutralize Nitric like i use always. Solution is dark,dark green. After that i add whater to solution and add some SMB diluted i little quantity of water.
I leave that 24h but nothing happen, i tried to add more smb but still no reaction . I toke sample and try to ad ferrous sulfate but also no reaction.
Then i cemented all with ALU foil to see what i will get.
I wash and dry slug that i got from solution and i have analyze the dust.
I get readings from the picture.
Connectors :
https://ibb.co/JHRfPmj
XRF :
https://ibb.co/Jm6DxX7
I still have approx. 25-30l of diluted AR.
Why do think that i failed , is it because Sn or? And what you suggest me to do next wit the solution?
How to extract Au with no big losses?