Gold From Gold Corner BGA IC Chips Redo part 1

[@janepeacock-baillie3380]

My friend. The reason your ending up with lots of chip the did not dissolve in the acid is 100 percent because your cooking it on way to high heat. When i do mine i put it on very very low and 4 to 1 ratio of acid to chips for at least 6 to 8 hours . It does not even foam up on me and it dissolves everything. I had this problem when i started wet ashing over 10 years ago. I hope this helps.

[@prospectorpete]

Hey Mike, when wet ashing you're not supposed to have a lid on. And each time it foams up you have to pour fresh acid over the fumes. The reaction is finnished when it stops foaming up

[@keithyinger3326]

I used to work on a chicken farm and they gave us 35% hydrogen peroxide to flush out our water lines with. You couldn't see when it was coming out the other end of the water line, but you could tell when the ground the water was landing on started fuzzing and bubbling. Then we just let it sit there in the lines for a day or two and flush it all out with fresh water again. This is when the barns are empty and we are cleaning for the next batch. So don't worry, the chickens are not drinking the stuff.

[@frankzahn7773]

I believe you should give it another h2so4 bath to get rid of all the undissolved plastics before you put it in AR or a nitric bath. I think you did not use enough h2so4 to start with. On other shows they put in twice the volume of h2so4 to the volume of chips. That way you will not get those undissolved chunks. A blender does not get rid of the plastic, only makes it smaller. I hope this helps.

[@MickNailZ]

Last time I did bga tops, I boiled in nitric acid before ashing. Worked great and easy refine.

[@Alex-kp3hr]

at 11:13 you still wind up with hard foam meaning you have a plastic problem. Remedy = incineration, pulverizing. Some gold may still be stuck to the corner bits. On the dry powder HCL to get rid of internal base metals, then HCL + bleach or AR to dissolve gold.

[@goldensadventures1229]

I don't Mike. I have not tried either process yet. But watching it seems the incineration method you do is better. And you can do larger quantities too. But I will wait until you are done.

[@leehodgson6920]

I think adding the peroxide when hot degraded it's affect. It probably decomposed before it took effect properly. I've only seen parana used cold.

[@afineliner740]

I'm glad you didn't add any water to thin-out the solution, as this would have simply diluted the Conc H2SO4 and not helped the reaction, add more H2SO4. The whole idea of this reaction is to initially dehydrate, then oxidise and char all the organics. I think it was too hot, some of those white fumes were likely sulphur trioxide SO3. 👍

[@terryfolkerts6379]

It is all about having enough acid, When I shut off the heat wait a half hour then lightly stir in the foam so it's in liquid

[@robertsletten7466]

Hmmm I don't know ... But your SOP seams right, Nitric 1st Guess you already know the out come ... I hope it was good Thanks Mike ... Don't think I'll ever "Wet Ash" anything

[@theonewhowas7709]

the bad thing about using peroxide too.. is when heated.. ive had it boil up and over the beaker suddenly.. and unexpected just out of no where..

[@timtoolman4125]

Picky Plan, has a couple of different was of processing, take a look and you may come up with another way to this.

[@joek511]

Gold may be 17x heavier than water but that's carbon impregnated sulfuric acid. (Syrup) The bond wires will stay suspended until enough water is added for them to sink. Wet ashing needs to be done in a large container. Allowing you to thin it down enough for the gold to sink before you start pouring off the fluid.

[@apprenticebirdcarver8733]

You’re not a wimp. I was nervous.

[@shaneyork300]

Loving this channel my friend!

[@jansonsynder]

I've not ever done any of this and I love your videos for how well you teach. Question though. Does the rinse bucket end up in the waste bucket or is it safe to just dump? Or do you let it evaporate off and then dump it in the waste solution bucket?

[@omegageek64]

The acid is meant to be dumped down drains, so that is where the rinse water goes.

[@jansonsynder]

@@omegageek64 do you have a playlist of how to start with nothing? I would be Very Interested to see the "how to start with little capital and what to buy next to improve" video series!

[@omegageek64]

@@jansonsynder I don't have such a playlist. It's a good idea though. Thanks for the suggestion.

[@goldensadventures1229]

@@jansonsynder I been watching Mike for over a year now. I have watched just about all his videos. I suggest you go back to his early ones. He does one called "Getting started in gold recovery from electronic waste" about 3 years ago and start there and work your way back to today. And yes playlist would be a great idea.

[@frantiseklaluch6605]

Stlill not enough acid... like 2 liters+ needed...

[@Rob337_aka_CancelProof]

Have you tried acetone to get rid of that black plastic foam? Or another solvent that eats plastic but you should rinse it very good first because you probably don't want to mix acetone with acid and that shouldn't affect the Gold at all.

[@colonialcharlie8702]

I also think hot plate is turned too hot. But decant while still hot. Aqua regia before removing base metals some suggest, because they have cheap hno3 available. 3 liter hcl and 1 liter of hno3 will accommodate the base metals on a kg of a variety of components. But they also have the most vigorous reactive denox showing how far they overshoot and the abundance of leftover nitric. I wish it was that cheap here. That is too wasteful for me. Haha

[@omegageek64]

Too wasteful for me too!

[@Marketto8777]

isn't it best to do a HCl boil before incineration to remove solder? thanks

[@apprenticebirdcarver8733]

How did you dispose the waste solution? I heard you cannot put it in your stockpot as sulphuric acid (a lot) can make a mess of it.

[@adambuysyuckyhouses]

Careful adding water to hot solution

[@michaelgriffith104]

Shouldn't the piranha solution have converted the carbon to CO2 gas to evaporate away? I thought that is why most of the time, after something dehydrates in piranha solution all the black carbon that's left over disappears and the solution returns to clear.

[@sandgstacker9881]

Once rinsed out do first step again see if the rest of the black stuff breaks down more ? 🤔

[@mr.g-sez]

look at owl tech he did 10kg of bga's and he had no gold! he mustve been devasteted, he said when he finds the time he will try to recover it. its not just you loosing gold.

[@omegageek64]

I saw that Owl tech video. I think his chips had heavy copper heat spreaders in them which threw off his yield badly. I've been stung by those too.

[@gilgoldmuenze2570]

12:05 Before adding new acid, get rid off the metal Sulfate salts first! Cuz all this black foam is carbon mixed with metal salts; and without water it is hard! Wash away the salts more often, or they will start to form a layer protecting the metal from acid.

[@gilgoldmuenze2570]

BTW great entertainment for my lunch time! Love it! ❤

[@gilgoldmuenze2570]

21:08 This is just: I don't know exactly what this is here, but in fact: I add 30%H2O2 to >BOILING< hot azetrop sulfuric acid!!! I'm happy you know the danger of H2O2 and been prepared.

[@terryfolkerts6379]

Don't pour off so much the thick goo smaller pours and wait between pours until it's more viscous

[@jasong8377]

I've only made it to the Piranha solution edition so far, and I think it's a bad idea because you may put gold inside solution I would of used the entire second bottle of Sulfuric acid to have a ton of extra to remain a fluid and when the foaming begins to rise to high add more acid to knock it down well back to watching 👀 ok your rinsing now when I rinse I put the Digesting container into a 5 gallon bucket And rinse with the hose Gallons baby I never disturb the bottom of it because I don't want to break up the bondwires if I can help it I only swirl it and they tend tol mingle and ball up and help hold themselves together then I pick out any heat spreaders that are present and go to nitric if to much metal otherwise aqua regia

[@2001pulsar]

More acid

[@dba1665]

I think if you are going to commit to this you should commit. the target should not be able suspend, by adding extra acid should aid in the settling of the metal's

[@terryfolkerts6379]

Running gold through a sluice with mud clumps not a good idea as you know. Look at the process the same way

[@Alex-kp3hr]

When it comes to the time where you melt your final gold powder, use a potato crucible. kzbin.info/www/bejne/i5uckIpnfbOaftU cheers