Electrochemistry Gold fizzer cell experiments

[FrugalRefiner]

Sorry. Just trying to be notified of new post. Thanks for letting me look over your shoulders.

I'm afraid that feature doesn't work on our forum. You'll just have to check in from time to time to see the progress on the thread.

Dave

 

[rickzeien]

Sorry. Just trying to be notified of new post. Thanks for letting me look over your shoulders.

I'm afraid that feature doesn't work on our forum. You'll just have to check in from time to time to see the progress on the thread.

Dave

Thanks Dave

Sent from my LG-H872 using Tapatalk

 

[bogarasjoe]

Dear All!

I followed the advices of Palladium and tried fizzer with NaCl electrolyte. Works fine, I like it so much!
I used an another 0,3 microns water filter ceramic tube for this experiment, the tube was sealed by epoxy putty (at this point I have to note, that epo putty is not suitable for HCl). It works a little bit slower than HCl fizzer, but there is no acidic spray. Scale up could and would be done with common equipments and pumps by this way.
Starting material was the same 0.8985 rolled gold. Solutin Filtered from AgCl, acidified a little bit and precipitated by SMB.
Gold was washed with hot water 3 times, than with hot HCl, than cold water, than cold HCl, and a lot of cold water washing.
Gold was looking much better by this way, it has a much lighter brown colour. Gold was smelt in graphite crucible.
According to XRF gold purity is around 999. Fire assay comming soon, but just after Christmas.
This was my first mettalurgical job and I really enjoy this type of "evil electrochemistry". Of course I have to work on it to minimize loss and scale up for larger batches. Another membrane experiments are comming soon with another membrane types .
So I wish Marry Christmas and Happy New Year with a lot of gold!
Thanks a lot for helpful advices guys, it' the better forum ever.

Regards,
Dave

 

[FrugalRefiner]

That's all very interesting.

How do you deal with the anode stubs? Do you remelt into a new anode? If so, how about the stub from that anode? How do you make it a batch process, or is that not a problem for you?

Again, thanks for sharing your journey,
Dave

 

[Palladium]

I had a little over 4 hours of video i shot on the nacl process about two years ago. I had a hard drive crash so to speak while i was editing the whole thing together. I was so discouraged that i just haven't wanted or had the time to shoot it again. I need to shoot a sequel!

 

[Palladium]

Solution Filtered from AgCl, acidified a little bit and precipitated by SMB.

Regards,
Dave

That is a very acute observation! Can i ask where you learned that?
You actually need an excess of hcl for the smb to convert correctly.
Did you try and precipitate it without an addition of hcl?

 

[bogarasjoe]

Of course I tried to add SMB without HCl, and just it did not precipitate any gold. So I acidified the solution, and and it worked well. Just I used my mind... Of course, I tested the solution with SnCl2 before and after precipitation. Maybe next time i'll use SO2 for it to avoid acidic wastes.
About anodic mud... a didn't deal with it yet. But yes, it will be separated from silver, and remelt for a next batch. We used a rolled gold anode, to have a higher surface. And it doesn't sputter so much. There was a very, very little gold in it, maybe a verry little piece. Of course I have to process it later.

 

[bogarasjoe]

Merry Christmas guys!!!

 

[Palladium]

Merry Christmas brother!

 

[bogarasjoe]

Hello All!

So we have the result of fire assay : we succesfully reached 999 (between 9996 and 9999) purity by the last salt water experiment and intensive washing.Really good news for New Year!
Thanks a lot guys, and Happy New year!

new experiments comming soon...

Regards,
Dave