Electrochemistry Sulfuric acid cell

[butcher]

.Axlrod2,

Note: Geo said: "the powder will still have a small amount of acid, just add this to about 1 quart of water very slowly until its all been mixed with the water".


Here which liquid is poured into which is important.

Pouring the powder (and small amount of concentrated acid) in water, is important,

You do not want to pour water into concentrated sulfuric acid, or onto these powders.

If water is poured into concentrated sulfuric the water heats up so fast, boils into steam, and it splashes the acid back at you.


Pouring concentrated sulfuric acid into water is safer, but you still need to be careful.

 

[NobleMetalWorks]

Thought I would post this in this thread, this is an excellent video on Sulfuric Acid, especially about introducing Sulfuric Acid to water.

Here is the video:

[youtube]http://www.youtube.com/watch?v=100Bk580mPY[/youtube]

I haven't watched all these video's, but if you have time you may want to watch the video's that pertain to what it is you are doing.

http://www.periodicvideos.com/index.htm

 

[Palladium]

[youtube]http://www.youtube.com/watch?v=KaZcyeJ-GBE&feature=relmfu[/youtube]

[youtube]http://www.youtube.com/watch?v=bBBy4-0uUC4&feature=relmfu[/youtube]

[youtube]http://www.youtube.com/watch?v=pPd5qAb4J50&feature=relmfu[/youtube]

[youtube]http://www.youtube.com/watch?v=mKezqiGUt3k&feature=relmfu[/youtube]

 

[Palladium]

[youtube]http://www.youtube.com/watch?v=iwnKU89CCdI&feature=relmfu[/youtube]

[youtube]http://www.youtube.com/watch?v=YR0LyIqn99A&feature=relmfu[/youtube]

[youtube]http://www.youtube.com/watch?v=7dF0QTzcuac&feature=player_detailpage[/youtube]

 

[Axlrod2]

Scott,
What other kind of cell refines?

 

[NobleMetalWorks]

Scott,
What other kind of cell refines?

Are you talking about recovery cells, or refining?

There are many different types of electrolytic recovery and refining

So to be clear you can use cells for recovering, like a sulfuric cell used to deplate gold plating. There are also Nitric and AR acid cells.

One refining cell talked about on this forum a lot is a silver parting cell.

There are cells meant to make colloidal silver and gold.

If you do any reading, you can look up patents on the subject. There seems to be no end of crazy inventions that were designed to do exactly what we do, except not nearly as well, or efficiently, or cost effective.

Did you have a specific application in mind?

Also, I am flattered that you asked me, but there are many other people on this forum that are far more knowledgeable in electrolytic metallurgy than I. If anyone would like to chime in and add their two cents, it would e appreciated.

Scott

 

[Axlrod2]

I like using the sulfuric cell to deplate cause the chems are at the hardware store. And I like and understand electric. What kind of cell can I use to refine the gold from the sulfuric cell?

 

[Axlrod2]

Or recommend a great video or videos that would explain all.

 

[nickvc]

In honesty the gold from your sulphuric cell will not be of good enough quality for successful electrolytic refining, all electrolytic systems require high grade feed stock to produce the necessary quality, you will also need fine gold to make up your electrolyte, cell refining of gold is very cost intensive and not for the average home refiner.

 

[spentfire]

What kind of filter should I use?

No filter paper will stand up to strong sulfuric.

While not filter "paper", several manufacturers make fiberglass microfiber filters in a variety of sizes which resist strong sulfuric very well.

I like to collect as much solid as possible from my sulfuric with these filters so that I can get a rough assay (guess-ay?) of yields from specific materials. These filters hold up extremely well in a Büchner funnel, but fall apart to microfiber fluff when I place the solid coated filter into HCl-Cl and stir. Once all of the gold has formed auric chloride, I filter the resulting solution and glass fluff through a cheap-o qualitative filter paper to remove the glass. The auric chloride is now free of fibers and ready for initial precipitation and refining.

Sadly, these microfiber glass filters aren't very cheap

Spentfire

 

[butcher]

fiberglass insulation plug in a funnel.