Search results for query: ap

You hit the nail firmly on the head here Rattle. As sure as eggs are eggs the ONE thing you don't label is the one thing that causes you issues. I feel your pain. Deeply.

...out on more reactive metals, it has nothing to do with saturation of salt in solution, only with the reactivity series. This is leaving your AP with cemented copper and (probably) iron chloride that will now act as a leach. As any copper salt will be displaced as long as there is metal iron...

Do I get it right if the peroxide gets exhausted and there will be base metals in the solution that adding peroxide later on will only lengthen the duration because the base metals where the gold is cemented on need to be dissolved again?

Since time is not important, smaller batches might be more controllable. And you can have multiple batches at the same time.

Very well said. As many grow into large scale they tend to forget some of the most basic processes at times. I always used AP on boards with idea in mind that it is a long term process. Even then selectively choosing what boards were to be processed. More a step in the retirement plan method...

...to see if the plastic fittings I used on the poly hose were acid proof. I opened the lid when I got home feom work this evening and found that the AP solution ate the tee fitting I used on the nice circular aerator I made 😳. I deleted that and just dunked the hose down to the bottom. Lesson -...

I too have gathered several pounds of this type of material. I was planning on doing a test batch of 1 Kilo into a large beaker with leftover CuCl2 (AP) and an air bubbler once the weather improves. Are you guys thinking weeks or months to fully dissolve the base metal?

I do indeed have a rolling mill. What does this process entail?

The all metal ones can be done in a Sulfuric cell. The PCB's in AP, Nitric or even Cyanide if you can access it and follow protocols strictly.

Hi, magnetic pins or as you said those who rust, are better deplated using a sulfuric cell rather than AP. The AP process is best for pins which for substrate have copper or copper based alloys. Usually is used with closed containers in well ventilated areas.

Well after a 24 hour soak in HCl (not AP), this is how they look. I’m starting to be convinced gold (dust perhaps?) is in the lye solution. I’ll put these aside for now and filter off the lye solution. Check the solids out. Maybe acidify the solution to see if SMB will drop anything. Question...

...people with sandals working with chemicals,although their yield wasn’t much but the method was much faster. I’ve watched sreetips doing the AP solution, but that may take weeks until the foils come loose and since it was my first time I wanted to see results quick. I really don’t mind reading...

Not too bad, but try to follow the waste protocol. You need to push the pH up to around 10/11 ish if I remember correct, then filter and lower the pH more and filter again. It is all in the waste thread. It has to do with the solubility of the different Hydroxides.

I stop trying dissolving pins unless they are really thin. Even then AP may be cheapest process even though it literally take ages. There are better ways to extract gold from pins without creating buckets of waste solutions which you will need to deal with eventually.

Hi all, question please. I've accumulated about 10 grams of scrap gold from jewellery and watches using the AP process. It's mainly dust, foil and small flakes. I'm not ready for AR yet but am wondering if I can melt the 10 grams into a blob for easier and safer storing. Any advise would be...

...200ml to each, no change. But there was some reaction. Today I am cleaning it up and checking it. Both beakers same time equal volumes. (Also cleaning up my gold foils from AP) right now. I'll get a closer look in a while at the silver contacts, I'm interested why copper appears on silver...

With watches, the cases can be way to thick to process in AP. I advice to process anything more solid than 2mm in a copper sulfate cell or concentrated sulfuric stripping cell. Do you have thin sheet metal bracelet links, made from bent sheet metal, or solid metal links and cases?

Second important reason is when using AP, a lot of gold foil stuck on pins and it took a lot of work to get them, and some pins made from steel not dissolution so can't get the gold foil plated on them by using AP.

What a beautiful problem to have there lol Mother lode

Yes, HCl to take the Tin and then AP to remove the foils. But I have never been in a hurry.

AP will work, but it'll take forever. A stripping cell will strip those in couple of hours. I know they look awesome, but don't expect very much gold from 2 Kilo's.

...HCL wash and two hot water rinses to 1 Kg of cleaned gold plated pins. These pins were then put into this beaker/basket/bubbler set up. I added approx 2 liters of "emerald green" AP, covered it with a watchglass and let it bubble away. I will keep meticulous notes and share my results in a...

and also the best way to store the foils once dried prior to AR? tks...

...most part misleading and downright dangerous videos. There are a few exceptions. Much better to read and study the books on the topic. Heads up on AP, it is actually a Cupric Chloride etch and really do not need Peroxide at all, only HCl and air bubbling. Here are some links to study: We...

...How did you discover our Forum? : Fbook group ewasterefiningpreciousmetals I have always enjoyed electronics and watched Yt videos about scrap recovery. I had a bunch of collected electronics and needed to clean it all out (was having a remodel and didn’t need any of it anymore) so I started...

Sir Kuma, do u have any idea what these plasma tv/monitor boards will yield if I have a kilo of them? excluding the ICs just the visible golden fingers. Do you have any idea guys?

Do you mean you leach in HCl only, then you leach in AP??

The filter papers retain a slight amount of liquid because papers retain liquids. So every paper has a minute quantity of liquid long since dried and containing a very very small quantity of Gold. If you just re wet those papers you will never rinse out all of the gold containing liquid all...

...to mythen 10 crying when he sees Siemens cards , Johnson controls is another control company . Nice pile of pins . On the other hand good luck with the AP . Use a bubbler , let sit for a while then decant and let the remaining pins oxidize for a couple of days then add fresh HCl. . Filter all...

The link do not function here, but I expect it would be good. My problem was that I could not find anything local in my country. I could have searched the eBay or alibaba, but assumed the freight would be too much, so I used what I had on hand.