Non-Chemical Incinerated ICs running on shaker table

[Grelko]

HCl does react to silver but because silver chloride is insoluble, only the first couple of atoms deep are effected. Once these first few atoms are converted to silver chloride, it prevent any further attack on the silver by the HCl. Any other oxidizer besides nitric acid have no effect on solid silver. When the silver is finely divided, as in cemented silver, a couple of atoms deep may be half the thickness of the particles and you can get a decent amount of silver chloride with just HCl and bleach even though I don't think the bleach has much to do with it.

Thanks for explaining that, I have some silver plated brass and copper items, but I'm still not ready to make a cell for them. I might try HCL on a couple pieces, or small bus bars and see what happens.

What If you added a bubbler, or vibrations "sonication" to the HCL+H2O2, or HCL/CL solution, wouldn't that slowly break off the oxidized layer on the silver and slowly convert the layers beneath it?


https://en.wikipedia.org/wiki/Silver_chloride ( Upon illumination or heating, silver chloride converts to silver "and chlorine")

I'm constantly thinking about many things at once. :lol: This could make for a fun experiment. Take a flask etc, with HCL/CL or HCL/H2O2, a bubbler, and something silver or silver plated. Heat the solution, or flash a strobe light through it "like taking pictures", which should convert the silver chloride back to silver and chlorine as it's being made by the HCL, then the bubbler should shake off the layer of silver as it's being converted back. You might only need HCL instead of H2O2 or CL. Instead of using a bubbler, you could use sonication "electric toothbrush?"

Then again, if the silver, being converted to silver chloride, and back to silver, would instead re-attach itself to the solid piece of silver, by using the strobe light, then you could technically "cold fusion" silver to another piece of silver. :shock:

Also, according to butcher's post that dealt with kovar, and re-using iron solution instead of disposing of it, ferric chloride should work with silver also, but that may only be for plated items. http://goldrefiningforum.com/~goldrefi/phpBB3/viewtopic.php?f=60&t=19838

 

[Geo]

I have successfully used AP to remove silver plate from heavily plated military pins. It does not come off in foils like gold foils but rather breaks up into fine particles like silver glitter.

 

[Grelko]

I have successfully used AP to remove silver plate from heavily plated military pins. It does not come off in foils like gold foils but rather breaks up into fine particles like silver glitter.

Was there anything special that you did first? Pre-treat with another acid, boil the AP, or even scratch it first, so the AP could attack the material underneath the plating which would release it?

I was thinking about using sandpaper on a plate or spoon, collecting all the particles from it and putting that into AP so the BMs would dissolve, leaving the silver. The reason I decided against it for now, is that I'm not sure how to get the sand out afterwards. "Unless that particular sandpaper is made from aluminum oxide"


Sorry for taking the original discussion way off subject. I was going to ask if anyone happened to have instructions on how to make a small shaker table, to process a couple pounds at a time because, I don't have much space, but I got side-tracked.

 

[johnny309]

I have successfully used AP to remove silver plate from heavily plated military pins. It does not come off in foils like gold foils but rather breaks up into fine particles like silver glitter.

Test this material for Rh.....

 

[Geo]

Sorry for taking the original discussion way off subject. I was going to ask if anyone happened to have instructions on how to make a small shaker table, to process a couple pounds at a time because, I don't have much space, but I got side-tracked.

Have you tried just panning it with a gold pan? I have had great success panning pyrolyzed IC's.

Test this material for Rh.....

These are military grade pins from cable ends. They didn't gold plate them for some reason but they are heavy silver plated. The pins are not shiny going in and show the age of tarnished silver. I just can't see them using an expensive metal like Rh when silver would do the job but just to be sure, the next batch I do, I will test. I have about four pounds now ready to go.

 

[Grelko]

Have you tried just panning it with a gold pan? I have had great success panning pyrolyzed IC's.

I don't have a blue bowl yet, but found a different bowl that worked. I actually just tried a small batch a few days ago. The thing about that was, that I didn't get the fire hot enough and still had the smell of plastic, but no black smoke. (Charcoal and a heat gun to force air). It was 200g of mixed chips, and only 1/4 of them turned white. I got a little powder and some wires out of it, but my neighbors live about 15 feet away and I didn't want to chance getting them sick from it.

If I had a small shaker table, I could run IC chips no problem, since alot of people near me work on their cars, houses, and there's a trucking station right up the street, so the table noise shouldn't bother them. Plus the shaker table would be good for circuit boards, once I get around to making a mill to grind them into powder.

If I could get the fire hot enough, it would stop the smell of plastic and I would be able to process chips that way also. I was just testing how the it worked.

 

[patnor1011]

Mortar and pestle should work too. I actually started with them, I moved to incineration as that is easier for me. Get a steel pipe, thread a cap on bottom and use steel or iron rod as pestle.

 

[Grelko]

Mortar and pestle should work too. I actually started with them, I moved to incineration as that is easier for me. Get a steel pipe, thread a cap on bottom and use steel or iron rod as pestle.

I was using a small stainless steel bowl and the back end of a floor scraper, as a makeshift mortar/pestle to finish grinding up the small amount of black sand. Then, I panned it out with a black, plastic, chinese fastfood dish from downtown :lol: . That actually worked alot better than I thought it would. I saved all the rinse water and filtered it before disposing, to make sure I got all the wires.

Thanks for the idea about the capped pipe, I'll have to try that. Once I get some type of incinerator, to stop the burning smell "hopefully soon", I'd use that since I still have around 10 pounds of mixed chips, plus BGAs, ram etc, and more waiting to be pulled off boards.

I pick up scrap metal also, so I probably have the pipe/cap, and steel rod around here somewhere to crush the chips, then I can use my ceramic mortar/pestle to grind some of it to powder while panning. Would take longer, but it still gets the job done.

Do you think that you lost any wires while crushing them in the pipe? I figure there would be some dust or pieces flying around.

 

[patnor1011]

No, it is long enough so no wire will get out. I use it to break them in smaller pieces, not to grind them in powder. That I do in smaller mortar, problem with this big one is that if you want powder you end up smearing gold wires on other metallic pins and heat spreaders in the mix. Always grind a bit and try to remove as much metal as you can, sieve grind-ed powder out then repeat.

 

[Grelko]

No, it is long enough so no wire will get out. I use it to break them in smaller pieces, not to grind them in powder. That I do in smaller mortar, problem with this big one is that if you want powder you end up smearing gold wires on other metallic pins and heat spreaders in the mix. Always grind a bit and try to remove as much metal as you can, sieve grind-ed powder out then repeat.

That's what I was going to do with the ceramic mortar "or stainless bowl" after crushing and sieving them.

How long is the pipe? I'm thinking around 2 feet should be enough?

By the way, I'm glad you showed up here. I was just re-reading your PDF on processing chips earlier. I knew that picture looked familiar. Thanks for making it, it helps alot. Now, if I could just figure out what to do with the rest of the PMs in the chips, without having any nitric avaliable.

 

[Barren Realms 007]

No, it is long enough so no wire will get out. I use it to break them in smaller pieces, not to grind them in powder. That I do in smaller mortar, problem with this big one is that if you want powder you end up smearing gold wires on other metallic pins and heat spreaders in the mix. Always grind a bit and try to remove as much metal as you can, sieve grind-ed powder out then repeat.

That's what I was going to do with the ceramic mortar "or stainless bowl" after crushing and sieving them.

How long is the pipe? I'm thinking around 2 feet should be enough?

By the way, I'm glad you showed up here. I was just re-reading your PDF on processing chips earlier. I knew that picture looked familiar. Thanks for making it, it helps alot. Now, if I could just figure out what to do with the rest of the PMs in the chips, without having any nitric avaliable.

Make your own nitric.

 

[JHS]

Sorry for taking the original discussion way off subject. I was going to ask if anyone happened to have instructions on how to make a small shaker table, to process a couple pounds at a time because, I don't have much space, but I got side-tracked.[/quote]

I have collected all the materials to make a shaker table.When I have completed a few other obligation's I will post the process of the build along with explanation,steps, and pictures.
john
P.S.I like building things,even if I have no use for them.

 

[Grelko]

Make your own nitric.

Once I can do it safely, I was going to make some, or just buy some online. I don't have the room right now and my neighbors live too close, so I don't want to chance sending a red cloud their way. I can always ship the leftover material to be refined, or hang onto it until I get a scrubber/fume hood.

I have collected all the materials to make a shaker table.When I have completed a few other obligation's I will post the process of the build along with explanation,steps, and pictures.
john
P.S.I like building things,even if I have no use for them.

That'll be great once you're finished with it. I saw a couple videos about them, but those were all larger ones.