Pictures added Iodine Leach Test In Progress

[Lonnie]

Very interesting I'm sure glad you posted this . Please keep us updated on this I'm very interested in what your doing here . It may just be a process I'm looking for .

I just wonder if it might work on some interesting material I've been hanging onto . I'm thinking the solder just might be more value than the silver contacts . It sure has to get hot to turn them loose and has a nice color to it . I'm thinking your iodide process is well worth a few of my own test .

I have lots of heavy copper ( electrical copper ) with a thick coating of silver . Stuff made back when gold and silver was very cheap ( 1920's ) as compared to todays methods of doing things . I'm thinking this leaching with iodide may just be one of the answers I'm seeking .

Some of these silver plated chunks weigh 9 pounds , some weigh 3 pounds and many weigh 3 to 4 ounces . This iodide could be done in a vat big enough to hold 100 pounds of this copper . Some questions I have concerning ebay and this 250 grams of pure iodide stuff .

1) do you have to mix alcohol with it or would water and the iodide work by itself ??

2 ) I wonder how much of that pure stuff it would take to make say 20 gallons of leach ??

3) Have you melted any of the silver / gold yet ??

Thanks again for posting this thread very interesting and I sure hope you have great results using it . Please keep us informed with your results especially concerning melting the silver .

Lonnie

 

[bwcbob]

I found Povidone-10% 32 oz here http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=16433

Bob

 

[Lonnie]

Bob

Thanks for the link I wonder what a Qt of that would cost ?? I haven't looked yet simply because this slow as can be computer and dial up connection I have here . But I'm betting it would be much cheaper to buy the pure stuff on ebay ( 250) grams and mix your own . For an experiment a small bottle would be approprate to purchase before spending 20 bucks plus shipping for the ebay stuff .

If it worked on the plating , solder or both then buy the pure stuff and mix it myself . Some of these heavior pieces have a rectangle section about an inch thick , then about 3 inch wide and about 6 inches long . Then about mid ways it has about a 1.25 inch dia hole drilled and has a round rod / shaft like thing soldered into it thats about 12 to 14 inches long . Point being is they bulky and would take a big tub or vat to get many of them in the thing .

It's hard to desolder and even remove the contacts using torches simply because the heat transfers from the contact site through the rest of it so breaking them down to fit in a smaller tub is very hard . I've been cutting some of them with an electric metal cutting saw from time to time so I can sweat the contacts off so I can sell the copper . Them 16 little chunks with the small; contacts were cut off last night and early this morning freeing up about 40 pounds of copper so I could sell it . Now that those are in that small of a chunk I'll be able to desolder and remove those contacts easy with my torches .

I could cut them off or more less heat and blow them off with my torch . But you loose half of it and it makes a mess of them . Now that those just have a couple ounce of copper attatched to them they will slip off fairly fast with torches . The pieces with the plating and the parts that I call fingers are the ones I'm really interested in using the iodide process on . Their the ones with the nice colored solder most of the other chunks appears to be a silver solder . I assume it's silver because of the amount of heat it takes to remove them even if they only attatched to a small chunk of copper . It's certainly not lead / tin solder .

Anyhow thanks for the link I will check it out .

Lonnie

 

[bwcbob]

Bob

Thanks for the link I wonder what a Qt of that would cost ?? I haven't looked yet simply because this slow as can be computer and dial up connection I have here . But I'm betting it would be much cheaper to buy the pure stuff on ebay ( 250) grams and mix your own . For an experiment a small bottle would be approprate to purchase before spending 20 bucks plus shipping for the ebay stuff .


Lonnie

Lonnie

Sorry I didn't post the cost --> $ 7.19 per 32 oz. I bought 2 bottles for about $ 21.00 shipped to the US (shipping was$5.99) . I calculate approx 950 ml per bottle will get you about 5 gal. of working solution, or about 10 gallons of solution for about the 250 gram ebay mix your own price, less the 20 bucks shipping they charge on Ebay

 

[poet]

$12.98/Gallon of Povidone Iodine. Free Shipping. http://www.amazon.com/Povidone-Iodine-Gallon-Surgical-Scrub/dp/B00061MWLI

I bought some not long ago. Hope this helps!

 

[etack]

buy the Potassium iodide on e-bay and make your own iodine crystals Potassium iodide is 76.4% iodine by weight(according to Wikipedia) add water and bleach and you have iodine. it is cheaper and shipping is free.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270648051689&ssPageName=STRK:MEWAX:IT

http://en.wikipedia.org/wiki/Potassium_iodide


Eric

 

[Irons]

buy the Potassium iodide on e-bay and make your own iodine crystals Potassium iodide is 76.4% iodine by weight(according to Wikipedia) add water and bleach and you have iodine. it is cheaper and shipping is free.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270648051689&ssPageName=STRK:MEWAX:IT

http://en.wikipedia.org/wiki/Potassium_iodide


Eric

Here's a great video on how to make Iodine from Iodide:

http://www.youtube.com/watch?v=ZFP7fYGrFRI

 

[Drewbie]

This isn't really a "leaching" process is it? Considering the target metal is falling to the bottom of the container?

Leaching would imply the need to recover the metal out of the leach solution afterwards?

 

[TheGarbageManCan]

Hello all.

So if one only had pure elemental iodine crystals, the procedure for making a 10% iodine tincture is to add 5,5g potassium iodide to 100ml. water. Then desolve 7,5g. of iodine crystals?

Then delute with water 1:10, PH adjust to 4 with hydrocloric acid and you have a leaching solution.?
Or have i misunderstand?

 

[seawolf]

Greatgems, do you have an update on the silver stripping?
Mark

 

[texan]

Stuff made back when gold and silver was very cheap ( 1920's ) as compared to todays methods of doing things . I'm thinking this leaching with iodide may just be one of the answers I'm seeking .

Yes gold and silver cost less in the 1920's...but you could also buy a burger for a nickle...gasoline was 18 cents and you could buy a car for under $500. All things are relative.

Texan

 

[greatgems]

It works very well even better on gold playing

 

[joem]

It works very well even better on gold playing

gold playing?

 

[greatgems]

Plating sorry I phone auto correct

 

[joem]

Plating sorry I phone auto correct

no worries I'm just plating ur um ...Playing with you

 

[heartlander27]

It's been awhile. I have been partially successful with the stripping of material. I bought some iodine crystals but have had a hard time getting the solution to turn into the red-brown solution. I'm not sure if the Clorox is a strong enough oxidizer, maybe I need chlorine??? Any one know?

Also, I have checked all my silverware items, actually I sold some for $25 dollars which covered the cost of the ones I stripped.

Andy

 

[etack]

if you were to add your crystal iodine into a solution of KI it will go right into solution you will be making Lugol's solution

http://en.wikipedia.org/wiki/Lugol%27s_iodine


Eric

 

[ausnip]

The definitive Iodine/Iodide method is described in the Hormick patent, US Patent 3957505. Links to this exist on the forum.

As stated above you can buy Potassium Iodide and mix your own solutions. Hydrogen Peroxide works much better than Bleach
to make iodine from the dissolved Iodide.

Using Potassium or sodium hydroxide to precipitate your gold or silver creates hydroxides rather than metal, besides it also contains a lot of iodine. They are a ***** to filter. Converting hydroxides to metal also introduces another possibility of losses. The patent provides several options for precipitation, use any of the others.

Pay close attention to the use of a buffer compound. I learned this the hard way as I used a regenerated solution several times. Even at a PH of about 4 I was getting hydroxides to drop out during the leaching process. This was mostly a nuisance with what I was leaching but would have been a serious problem if you were leaching an ore or any ground up items.

A properly set up leach solution including an air bubbler should strip normal plating in a few hours or less. I was able to do this sometimes, but also experienced longer leach times. If I were to get back to this I would want to figure out how to determine and monitor the iodine and iodide percentages in the leach solution.

 

[AztekShine]

Is any body still doing this?

If so, why?

 

[goldaa]

Still using iodine an it works verry good. 1 qt vinagar small amount of salt 1/2 shot of iodine from feed store. swirle in gold pan till the gold is dissolved then filter thru three coffee filters pre weted the solution from the filter add some ascorbic acid and waite for the gold to drop maby over night to get a full drop. of black powder. ascorbic acid 1/2 tesp dissolved in pint of water. Have fun. about a shot of the ascorbic