Search results for query: ap

Can we get a definition of small and hobby? I have used AP in almost everything from a 1L beaker to 50 gallon drums. I will say this could be a great idea with enough input.

...some (not all) of the solution and adding more hcl? Or, as some say, should I just add more hcl to the existing solution? Question 2, Even if the AP solution is not saturated with copper and other trace metals, does adding a little hcl each day improve performance of the copper2 chlorides...

...in the solder. That efficacy is where your other process wins over this one, as that gold in theory should be in the powder at the bottom of the AP bucket, if it was run long enough to dissolve the solder off of the boards too. Random other things to think about: * larger surface area of...

I have many hundreds of AMD CPU’s with matrix of plated pins about 1 1/2 mm long on face. How best to remove and use AP? Thinking about placing them on a hot griddle then scraping pins off. Would tin from solder interfere with dissolving the Cu out?

How do you process them ? AP ? AR ? Nitric ? Stripping of some sort ? Just curious.

For terms you don't understand, see A Glossary of Common Terms. Dave

What was the weight of the foils you recovered from the 2 lb of fingers.? Boardsort is now paying $50/lb for "Clean Gold Fingers" So I hope you got more than 1.2 grams now that gold is going for almost $83/gram.

“Surely the same setup would work for AP with a pipe running up and out of an outbuilding like a shed or a garage.“ It sounds like it would work pretty well. Smaller pipe and flexible sections should be cheaper and less intrusive as well.

I did exactly that on my last go round when this happened. It dissolved the copper and nothing dropped. Turned the solution into a very full AP looking solution, very black…..but I will definitely give it another go.

Where did you find the information on using Sulfuric for AP? This is a puzzle and I'm confident it was not with SreeTips. Here is something to study: We ask our new members to do 3 things. 1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction to the most...

Bro Stewill, how much does the IC chips weighs? And how much gold did it yield for IC chips only? BTW are the abbreviations that I interpreted are correct?? AP = Acid Peroxidase AR = Aqua Regia

...Slow and methodical is definitely best. Some further forethought could have saved me a lot of work. After MONTHS of depopulating circuit boards and sorting components I guess I was just chomping at the bit to put some metals in solution lol. Apparently I am not a doctor for I lack patients. Lol

Lol everybody. Pretty new at refining but been extracting gold pieces from computer wastewaste for years with AP solution. Been reading a lot learning a lot. My first attempt at trying to refine some of the gold that I had extracted didn't turn out so well. I'll read through a lot of the other...

Gold on PCBs is almost always plated onto a nickel layer over copper. So if you dissolve the copper using the acid peroxide (AP) method, there should always be nickel on the backside of the flakes. If the gold plating was relatively thin (good ones are 8 µm to 16 µm), you'll get proportionally...

Welcome. I'd use HCl not AP. And it is not a bad idea as such but it will create waste, but this can be minimized by using it until the acid is depleted. This will minimize the amount of waste. Anyway here are some links for you to study: We ask our new members to do 3 things. 1. Read C.M...

I understood it as to add info if you have more of it. Not to discuss the process in general. And I have not ran boards only close cut fingers and pins.

...I read the post, but still got questions, the Acids mentioned does not identify what acids we are talking about. I'm pretty sure the process does apply to AP, but I'd rather ask then assume. I'm not doing this large scale so will not have enough left overs in the AP solution that I really...

Question. I re-used the AP solution two days ago. The AP solution I re-used was used on magnetic gold pins prior. I put the solution on more magnetic pins. I had the other pins in a bucket, still just covered with the " magnetic AP solution ". They still had some gold on them. They also were...

I would think that close cut fingers are the easiest for the AP process.

Just a reminder of what is needed for this thread.

Ok now I am getting confused again HCl and Peroxide is AP? What I understand is that it doesn't dissolve the gold it just dissolves everything else leaving the gold as a solid. Is that right? But what about silver chloride I read here that it precipitates out in acid. So that will also be in the...

...planned on doing a small batch with AR since I don't quite know what I'm doing yet and I will want to know how to go that route for other gold scrap I will be working with (jewelry). I had avoided the AP process due to how much time I thought it took, but that sounds like the obvious choice...

...needs dissolving (for example copper bearing) and your gold will come out of solution. I think there are many threads on here that detail the risk of gold going into and AP solution with the use of too much Peroxide but hey ho it's remediable. Look on the bright side- you're testing. ;) Jon

Thanks Martijn that is really really helpful. I will study it carefully. Is that in the library I didn't see it but I often don't see stuff until the 10th time looking for something specific.

...wanted results...quick results. So, I) added more peroxide to "speed things up". Things sped up alright. Now, according to a stannous test, that AP solution is loaded with gold as well as the base metals. I tested another waste bucket from other experiments, and there is SOME gold, but not...

Thanks - i realize what i did now and added a *** edit *** to the post.

...when you are done you will have to purify the gold you recover. I know looking at 330 grams of plated gold may look like you are dealing with a lot of gold but in reality, it is a thin surface film and no where as rich as it looks. This is unquestionably a process for AP for a hobby scale...

What we say is that you have not done your studies, then you would have know that no Peroxide is needed for AP. And you would have known that HCl/Peroxide dissolves Gold, and also if you dissolve Gold and not ALL base metals some of the Gold will cement out on the base metals. This may now lead...

Price is one, metastannic acid is one.

Stripped boards, gold filled, limited use for non magnetic pins. Some older, removable networking cards of the type used in older laptops. At times silver plated items. I am understanding this as just list items that go into AP, and not how it is done yet.