Gold Recovery from 14kg CPUs

[@udittlamba]

This video has some early 2000s era KZbin vibe. I dig it

[@Chupa_hunt]

it's like a cooking video where there is the old recipe and old ingredients lol

[@adamhixon]

Just imagine showing this to a computer geek in 1995. He would be horrified.

[@_RandomGamer]

No, in those times in our area 10g of 24k gold was of ₹4,600 which is hardly 150 dollars

[@olivier4916]

Why?

[@Honza0297]

I am a nerd and I am horrified in 2023 as well. :) Some of those CPUs worth probably more than the gold from them.

[@007leonard1]

@@_RandomGamer ask your parents how long it took them to earn 4600 rupees back in the day

[@yatagarasu9274]

I'm horrified now

[@kienhwengtai8113]

Those are really old CPUs, modern ones have very little Gold.

[@merxellus1456]

Meanwhile background music “kau kau kau”

[@LighteningOne]

🤣

[@rsl6767]

Great video, but the music is really obnoxious

[@art40odd]

Great video and the music was awesome!!!

[@noone8139]

I think there are many steps missing in the video, such as where is the silver, cooper & the other minerals, how pure gold dissolved in nitric aced ... etc

[@OwlTech333]

kzbin.info/www/bejne/bYSnaYGolKiImsU

[@gelosul]

Some quick maths here for whoever in interested: If average CPU weight is 60g then that would mean there would be approximately 233 CPUs. They would have to be sold at about £20 each to have the same value as the gold resulted from the melting.maybe less if I knew how much silver was melted. So conclusion is that depending how old they are it might not be worth putting them back on the market and melting is better option. I did not take in to account the time and materials of the melting process as I'm not familiar with the costs.

[@joergkalisch7749]

.4 g of gold per CPU? I seriously doubt that

[@twistr99]

@@joergkalisch7749 what do u think? How much gold in 1 cpu?

[@joergkalisch7749]

@@twistr99 a few milligram

[@twistr99]

@@joergkalisch7749 thanks

[@ggoddkkiller1342]

@@joergkalisch7749 Old processors have much more gold than modern ones, some models even have 0.5 gram. So his math isn't too far away i would say around 0.2 average, still selling working processors would earn you a lot more..

[@charlesspringer4709]

Only allowed in certain unregulated parts of the world? Cupelling without a cupell must be called "sending the lead oxide downwind". But interesting for the simplicity.

[@SollersScrappingandDiving]

One day I'll have the courage to process my own gold but until then I'll watch the pros and just sell the gold bearing goodies (except for the bits I stock pile) those ceramic CPUs are beautiful and I'm sure you've made many collectors cry!! Interesting seeing the eproms being processed! 👍

[@Chewy_GarageBandDad]

I collected for 3 years and just started to process mine. Whoooo its not easy. Shit goes sideways and before you know it, you are like where my gold.....fuk ....er? LOL One thing they do not stress enough is get your filtering process down, practiced, built, understood... before you do anything. That's where it first can start spiraling out of control. You literally forget if you keep the solution or whats on the cotton... Cross contamination starts happening as well if you are not careful. Ive been a mess for weeks now. LOL

[@chrisdelaere]

@@Chewy_GarageBandDad i expect the author to reply to this

[@OwlTech333]

I completely agree! Filtration is one of the most important steps in the refining process (if not the most important). If the solution is not crystal clear you’ll have a hard time precipitating pure metal

[@martinslavov1449]

@@OwlTech333 Hi , I am a big fan , can you please tell me where did you buy the 14kg of CPUs and what did it cost ?

[@OwlTech333]

@@martinslavov1449 they’re not mine, I only process them

[@adama4028]

I don't know why you all melt this gold powder with a burner from above, a blast of flame will certainly blow some of the powder out of the crucible, so there are more losses, it would be better to heat the crucible from the bottom.

[@John-ir2zf]

Honest question.... Why didn't you crush the chips ? Inside of those sandwiched ceramic plates are tiny gold wires from each pin to the chip. I doubt the gold escaped from between the ceramic plates without breaking them open.

[@OwlTech333]

There's no gold bonding wires inside the ceramics! From GRF: "A standard ceramic CPU is made of several layers of ceramics bonded together. between the layers (while the ceramics is still unfired, also called green) is screen printed conductors of molybdenum. The ceramic body is then fired and the molybdenum that is exposed is then gold plated. On the bottom or side, pins are brazed or soldered and in the cavity bond wires are used to connect landing pads on the die with the exposed gold plated conductors. For bonding wires aluminum or gold can be used. Inside the ceramic body is the molybdenum conductors and the only gold is the exposed gold and the gold under the die. To use gold inside the ceramic body would be problematic. Thermal expansion and contraction will break conductors over time unless it expands with the same rate as the ceramic body. Molybdenum is the solution on this problem and it is cheaper that gold. Göran"

[@John-ir2zf]

@OwlTech333 thank you for the info.... Though I'll still crush mine since your copied article clearly says "for bonding wires, aluminum or GOLD can be used". It's a small quick step and if it liberates more gold, I'll go through the extra step.

[@OwlTech333]

@@John-ir2zf those are exposed at the moment the cpu hits the molten lead

[@TroubledOnePaydirt]

Is there no chance you’re scooping away some of the gold with that big cup thing? Does the gold sink or something?

[@OwlTech333]

It’s a perforated ladle so the molten lead gold alloy runs through the holes

[@TroubledOnePaydirt]

@@OwlTech333 oh I see. 👍

[@maciejzbogdanca2904]

Professional chemist here: please don't sit over a plate of molten lead. Pretty please.

[@OwlTech333]

@@maciejzbogdanca2904 noted

[@FatDaddio-bo8km]

Calling it a LEAD BATH makes it feel like hitler named it

[@JoshuaBerner]

That's no where near 3-9's. Too much lead and silver. You need to melt it into shot and put it in aqua-regia using sulfuric acid next time.

[@OwlTech333]

Ok

[@sykesy6699]

Bro literally used a xrf machine and showed its 99.49% 🤣such a hater

[@aecetantran]

could you explain the cupellation on the stainless steel part? and does that take the lead away or do you mix it with borax glass and niter salt to get a slag and the final dore?

[@TheCrudmudgeon]

He skims off the lead oxide as it forms. The base metal oxides slag with it. Same idea as when cupelling with a MgO cupel... just not as neat.

[@rustymotor]

Well done! I have worked for many years as an electronics technician and have hoarded boxes of used circuit boards, some boards are from high end Hewlett Packard equipment complete with gold plated circuit tracks and edge connectors. I once had thoughts about processing it all for the gold but I am not going to bother, I hope to hand it all over to someone who can process it, I am sure there would be a nice amount of Gold for recovery.

[@OwlTech333]

Very cool!

[@RioSantana1]

How much do you have

[@rubenverster250]

Do you know what tghe gold price is right now?

[@ignoovart5034]

Why instead of pouring it into the crucible with water, don't you use a filter like a coffee filter to get rid of the water excess easily?

[@OwlTech333]

Sometimes I use coffee filters too

[@عبداللهاحمدعبدالله-ش4ذ]

مرحبا هل يمكن ان استخدم الرصاص في استخلاص ذهب من الكترونيات بدون مااضيف فضه

[@OwlTech333]

Yes

[@MrLukealbanese]

Great video - what was that soundtrack? It was fab.

[@OwlTech333]

m.soundcloud.com/owl-tech/gowl

[@Joe.Rogan.]

What do you mean the silver is a nice bonus at the end? Seeing how you added 300g silver... how much silver was recovered at the end to make it a nice bonus?

[@OwlTech333]

The silver from the picture is almost a kg. The nitrate from the dissolution step was mixed with other nitrate from previous refining. You get silver form the CPUs as well as gold. The added bonus is the refining of this silver which usually weights more than the gold recovered.

[@DL101ca]

@@OwlTech333 considering the cost of silver , it's no more than 60$ worth if even that.

[@phoenixmission]

You got 6,300 dollars out of 91 grams of gold. What's the total cost for the gas and chemicals used in the process?

[@OwlTech333]

50 dollars

[@SniFFaFlipn]

Wish I could learn this... Alchemy always said we could create gold out of just about anything..

[@jedisenpei855]

@@OwlTech333 How much for the scrap parts?

[@klaasj7808]

@@jedisenpei855 he wont tell, ive seen some expensive cpu's

[@OwlTech333]

I don’t tell because I don’t know

[@joshoconnor9666]

4:43 it looks like u missed a decent amount of gold there still left in your ceramic scrap. Is that what that is?

[@OwlTech333]

Nope that’s lead oxide

[@sgj85]

Where to buy this tool 13:50?

[@gireeshshewale-f6s]

I want to conduct this experiment on a small scale, with a quantity of 1 kg. Could you please provide me with the composition of lead and silver in the furnace process?

[@OwlTech333]

1kg of what? Material or lead?

[@OwlTech333]

GOLD from transistors - test run kzbin.info/www/bejne/mZXQamNri9qahsU here’s a small scale operation

[@gireeshshewale-f6s]

@@OwlTech333 1Kg of CPU Ceramic

[@OwlTech333]

@@gireeshshewale-f6s 0.5kg lead in a proper crucible should suffice and 50g silver which should be added after the “bath”

[@gireeshshewale-f6s]

After lead bath, we add silver with molten lead solution before cupilation process?

[@echosmyth5021]

Dissolving the alloy in nitric acid is not a process identical to inquartation. They are two completely different processes, with completely different purposes, ending in completely different results.

[@OwlTech333]

How is the result different?

[@echosmyth5021]

@@OwlTech333 Inquartation is a process where you ADD base metal to an alloy. Which then goes without saying, the result of inquartation is an alloy with a larger percentage of base metal. Nothing has been dissolved yet at the completion of inquartation.

[@TheCrudmudgeon]

Not base metal... usually copper or silver. ​He added silver to inquart the gold... ​@@echosmyth5021

[@cyberwolfgr2904]

are there companies that take in new hires doing this scrap job or is it for hobbiests and chemists ?

[@OwlTech333]

@@cyberwolfgr2904 don’t know but if you find open positions please let me know :)

[@d.m.mdarkmoonmusic306]

first how much is one kilogram of cpu second is the 91 gram of gold is 24k?

[@d.m.mdarkmoonmusic306]

i hope you reply soon

[@OwlTech333]

$100-$200

[@bymancini1]

Interesting ! where go the lead in cupelling with stainless steel ?

[@OwlTech333]

It turns into lead oxide (slag) which is then skimmed off. It is saved for lead recovery

[@jakuborvos1575]

Skimmed as lead oxide, about 10 or so % PbO vaporize in the process. If the cupel or cupelling tray is used, PbO is soaked into the cupel.

[@Heike--]

Is that the Orz music from Star Control 2?

[@OwlTech333]

Nope

[@Heike--]

​@@OwlTech333It has the *GO! GO!*. Do you know?

[@OwlTech333]

No I tried to search for it but nothing comes close

[@sxfvvgcd4829]

سلام عليكم اخي العزيز ممكن تكتبي الخطوات العمل استخدمت الرصاص او فضه

[@OwlTech333]

Both

[@sxfvvgcd4829]

@@OwlTech333 صباح الخيرات اخي العزيز هل وضعت الفضه في البوثقه معا الرصاص او كيف تخلصت من الرصاص

[@sxfvvgcd4829]

@@OwlTech333 سلام عليكم اخي الكريم ماء نوع الفحم

[@hooshangvh2626]

How much material did you spend? Tell it clearly

[@OwlTech333]

I did, go through the comments section it’s mentioned

[@kris4107]

Why do you choose this method instead of the common acid bath method?

[@OwlTech333]

@@kris4107 speed, low cost, effectiveness

[@gireeshshewale-f6s]

We need to buy silver separately or scrap have its own 300gm of silver?

[@OwlTech333]

I add additional silver

[@mtbmtb6163]

Hey just a curious question. What carrort gold was this at the end??

[@OwlTech333]

@@mtbmtb6163 24x0.9949=23.8776K

[@maratr9262]

Это не простой лом, а очень "жирный" лом. Поэтому выход с него очень хороший. Не весь лом одинаково полезный!

[@Alberto_Travagin]

Why you don't just add some zinc to the molten lead-silver-gold alloy? To separate the precious metals and save the lead for another time.

[@OwlTech333]

Parkes process is not just dumping some zinc in the lead, it’s much more complicated than that and I don’t feel experienced enough to execute it.

[@Arthur-l8c2g]

Where do you get such quantity of ceramic cpus?

[@OwlTech333]

From a client

[@Arthur-l8c2g]

@@OwlTech333 thanks for response.

[@Steen6319]

In Febr 2023 in my country, selling 90 gram of gold 24 karat (999) is about 4700 USD. /4500 EUR. Good job.

[@snerdterguson]

But how much do 14 kills of processors cost? Plus the cost of materials used to extract the gold. I'm not saying he didn't have a good profit, just that it would be nice for him to give that info.

[@John-sx2rf]

Would it be better to break the processors before adding them them to the molten lead?

[@OwlTech333]

No need to, thermal shock does it for you

[@theway674]

Brother please tell me you are in a very well ventilated area dealing with all that molten lead.

[@OwlTech333]

We are

[@ausfoodgarden]

How much did the recovery cost?? I mean if I somehow had access to huge amounts of e-waste, how much would it cost to recover the gold from 14Kg of CPU or other electronic items?

[@OwlTech333]

This is like asking me how much it will cost you to get to Paris or other cities in the northern hemisphere… for 14kg of this particular type of electronic waste (ceramic CPUs with kovar pins) using this method will set you back about $50 fuel and chemicals

[@ausfoodgarden]

@@OwlTech333 Thanks that's all I wanted. I understand different inputs will have different recovery costs. Oh and for me to get to Paris right now, about US$1500 😊

[@SkalpSolo]

could you do without the silver?

[@OwlTech333]

I prefer to do it with

[@okruiner7835]

12:12 looks like a planet got hit by a big asteroid amazing💯🔥🔥

[@OwlTech333]

well spotted

[@bbdgha]

Can you tell me how much $$ the 14kg of scrap is worth? Great video 👍

[@OwlTech333]

$3,000 roughly

[@ciocoflender007]

@@OwlTech333 How is this possible? One gram of gold costs approx. $54. 90g x $54 = $4860

[@jimzucker]

@@OwlTech333 so you basically made 2500 euro profit on 4 hs work?

[@OwlTech333]

My profit was 27 grams

[@RedMonk11]

​@OwlTech333 does this account for material cost?

[@windowsxpprofessional]

Do you think its worth soing this? The tine labour machinery cost lesves you at a profit?

[@OwlTech333]

Yes

[@denist.3089]

91 grams gold, almost 3 Oz troy, more than 8k $, mmm the answer is YES

[@frantiseklaluch6605]

Ahoj.... This looks efficient and scary... "Lead bath" is not exactly a wellness spa procedure... 😀

[@อดัม-coco]

😂😂

[@tejay9416]

Do not breathe those fumes 😂😂

[@adundeladundaz9022]

Hi! Is the lead bath metal reusable or do you have to buy new lead metal and silver all the time?

[@OwlTech333]

Both silver and lead are reusable

[@johnnyboy2459]

Tell me where do you get this Scrap CPU? Theyre worth more money sold to retro geeks lol

[@aditya007asva]

As a chip designer, watching this is like watching Mona Lisa burn down for its frame.

[@roberthowkins3097]

The mona Lisa is rubbish though xxx😅

[@OwlTech333]

@roberthowkins3097 lol

[@MatzeMaulwurf]

Pipipipeeepipieeepiee lol.

[@RealLifeFinance]

Hahahaha

[@Iam_inevitabIe]

What chip did you design bro😂😂😂😂😂😂

[@uncle_thulhu]

Man...I watch Explosions&Fire, michaelcthulhu, and any number of backyard restoration channels, and yours has to be the most ghetto, backyard chemistry setup I've ever seen. It looks like a shed in a scrapyard somewhere, so well done for that. You really seem to know what you are doing, and you seem to be very successful in your extractions, even with that povvo setup. At least you're not using old jam jars as reaction vessels. Oh, btw, those beakers of yours - did you manage to find actual BSG beakers with handles, or are you just recycling novelty coffee mugs?

[@OwlTech333]

What do you mean by BSG beaker?

[@OwlTech333]

Looks like you’ve mastered the art of observation ;)

[@uncle_thulhu]

@@OwlTech333 borosilicate glass.

[@uncle_thulhu]

@@OwlTech333 well, I have neither the equipment, nor the knowledge to do it myself, so observation is all I have. I just wish you'd get one of those hotplate/magnetic stirrer combos. Breaks my heart to see you having to use a stir-rod.

[@OwlTech333]

I do have one but it won’t be that ghetto :)

[@yroblack]

Hello, I'm a big fan of your writing, I do processes too, but in Brazil it's difficult. I previously bought 80 kilos i486 but it never arrived.

[@OwlTech333]

Be careful out there too many scammers

[@yroblack]

@@OwlTech333 Thank you I learned in practice now I'm looking for a company I sell material more calmly if you have a company...to say thank you...

[@jasonjamrs7413]

I hope you have a very good filtration system if not your inhaling lead

[@OwlTech333]

I do

[@MohammadaliAnsarizadeh]

Isn’t lead Vapor dangerous?

[@OwlTech333]

it is

[@saminathan8167]

Sir. Are you using white lead? Black lead? Please reply sir

[@OwlTech333]

l lead metal

[@chrisdelaere]

How many cpu do I need to get this 91grams of gold?

[@OwlTech333]

A LOT!

[@chrisdelaere]

@@OwlTech333 how many is alot like 100 or 200?

[@OwlTech333]

@@chrisdelaere 500+

[@NotAvailable_na]

So it is better to not crush your chips? Or is it better to crush chips? Can you please elaborate.

[@OwlTech333]

Don’t crush the chips if this is the method you’re going to use

[@evasanchezsaez8685]

Is rthis the industrial process?

[@OwlTech333]

Yes

[@Madcows]

You know molten lead is going to make these not work right??

[@OwlTech333]

On the contrary, it will combine their computing power

[@GauravSiswalFilms]

Total cost for 14 Kg scrap processors only ?

[@OwlTech333]

arround $2000

[@rockets4kids]

First time coming across something like this, needed to do some math.... Assuming 40 grams per CPU average, 14 kg would be 350 CPUs. From 91 grams gold that works out to about .26 grams of gold per CPU. That jibes with what I have seen reported elsewhere, at least assuming a high yield on recovery. Also, I never realized that these old CPUs contained about $15 in gold each.

[@kevinrusch3627]

Don't forget that gold in 1999 (that seems to be about the vintage of these chips) was going for $450/oz.

[@rockets4kids]

@@kevinrusch3627 Oh yeah, I know that. I was just shocked when I did the math and learned how much the gold in each chip is worth today.

[@scrapman502]

These weren't all CPU's. you can clearly see other Ceramic Ic's in the first batch he throws in. (Ceramic DIP Packages)

[@OwlTech333]

Correct, ceramic ICs were about 1,5kg

[@zvestar]

Would this lead method work on a gold plated on metal steel ear rings to recover the gold please help to answer thanks.

[@OwlTech333]

Yes

[@bedfordshiremodeller4491]

Goldplated stuff isn,t really worth that much at all. As the colour on the coldplating will eventually lose it,s colour and fade over time the duller the colour then the more chance their is of it being gold same as silver/copper

[@floatingpointerror55]

12:57 I mean you finally got the gold, but why did you have to piss on it!!??

[@OwlTech333]

To make it yellow :)

[@saminathan8167]

Sir. Plz gold recovery full video full details

[@OwlTech333]

Look at the other videos, I have many more on the subject

[@jakuborvos1575]

Everybody has his hard earned know-how. This video is very generous in details and show of the exact procedure. This technique is nearly 600 years old. It is described even by Agricola in De Re Metallica Libri. Nothing has changed since. There is not much more to be uncovered in more detail. Melt the lead with silver that way you end up with 25% gold alloy after cupelling (that is why Owltech added 300g silver - as he probably expected around 100g gold), strip the ceramic stuff in it, strain, cupel the dore, part in nitric acid and melt. It cannot be easier :)

[@bobbylee781]

I enjoyed this video. How do you handle the lead fumes?

[@OwlTech333]

Respirators

[@Michel-7.7.7]

Holding the breath, as far as i know, that's how they do it in Ghana

[@paulbarc3241]

May I ask what purity would the 91.2 grams of gold that was recovered?

[@OwlTech333]

99.49% pure shown @13:52

[@evasanchezsaez8685]

Do you use Borax when you melt the gold?

[@OwlTech333]

Yes a tiny amount

[@silver_salvage_savage]

Was there a lot of high yield materials or is that the general average?

[@OwlTech333]

Average

[@silver_salvage_savage]

@OwlTech333 awesome! I've been building up a collection. Nowhere near 14kg but seems like approximately 3-3.5g per pound.

[@FrankLassowski]

What about the lead oxide? Do you recover it or is it just blasted into the atmosphere?

[@OwlTech333]

Lead oxide is reduced back to lead metal by smelting with flour and wood charcoal and reused

[@aerialenthusiast7435]

Hello @OwlTech ,how much on average would all of those cpus cost

[@OwlTech333]

2-3k

[@aerialenthusiast7435]

@@OwlTech333 thanks alot for answering my question does

[@dianag-b9y]

ive got a ton of scrap gold, could you refine them for me?

[@OwlTech333]

What kind of scrap?

[@TheWatchRepairersPerspective]

Amazing work! : ) Thank's for sharing!

[@OwlTech333]

@@TheWatchRepairersPerspective thanks for watching!

[@prakashp1178]

If we use acid extraction how much gold will we get

[@OwlTech333]

The same amount

[@OwlTech333]

Or less if not done correctly

[@TheKegtwo]

What is your recovery rate? I.e. have you processed the slag and byproducts to see how much gold and silver is lost during the processes?

[@OwlTech333]

0.5%

[@GauravSiswalFilms]

Hello sir from where i can buy online 486 and 386 processors scrap ? Please reply

[@oldmate99]

Can provide if show bobs and vagene

[@mohamedazim4255]

How much is 14kg of CPUs ? Is there any profit in this work?

[@OwlTech333]

2-3k USD

[@GauravSiswalFilms]

Why we need silver in bath? It’s important or not please reply as soon as possible

[@OwlTech333]

It is very important

[@febredoouro2216]

Onde encontra esse material?

[@OwlTech333]

no lo busco, me encuentra

[@snahartupas]

what is the white powder you pour before torching ? thx

[@OwlTech333]

Borax

[@Kirt44]

Boric acid would be better

[@Rocky-gl3cq]

Sir which is the chemical products name pourifie in gold pls

[@mubarakrahma999]

Excuse me sir have you get chemicals products name please?

[@hussulinux]

how many total chips were there?

[@OwlTech333]

Oh I never bothered counting them

[@hustleusa]

Do i reuse nitric acid

[@OwlTech333]

theoretically you can, if you cement the silver on copper

[@fulol]

so thats just under 1k$ now minus the cost of all the products how much is that maybe 500?

[@OwlTech333]

Your math

[@OwlTech333]

91g x $64 = ?

[@wvcruffler123]

What is the cost to run a batch like this? Will you recover market price for the gold or is it a break even type deal.

[@OwlTech333]

To run it? Less than $50

[@madzen112]

Does anyone reuse cpu's, like using an old 486 for an industry machine or something? Or do they just all melted for gold?

[@klaasj7808]

it seems melted, you dont find many out there. re use maybe if something brakes down. but there are also industrial 386/486 type processors still being used, but they dont have that kind of gold inside. its all different now.

[@taumingxichenhupao2151]

What percentage of gold can be measured?

[@OwlTech333]

99.45%

[@KCM25NJL]

@@OwlTech333 I'm surprised it's that much. The purification process seemed to be missing the whole Aqua Regia cycle to remove most of the heavy metal contaminants.

[@OwlTech333]

Well you shouldn’t be as cupellation and inquartation are both refining processes

[@KCM25NJL]

@@OwlTech333 Yes they are, but Cupellation deals with large quantities of heavy material, while inquartation is certainly a desired pre-purification process to separate and remove base metals from gold, it's not considered sufficient to remove trace heavy metal ions from gold solution, such as lead, platinum group metals, lead and tin. I find it difficult to believe you got 99% plus with what you showed..... tis all I'm saying.

[@OwlTech333]

@ 99+ after inquartation and proper washing of the gold residue - almost every time

[@ewasterecovery]

Do you recall about how much silver you got from this recovery?

[@OwlTech333]

About the same as the gold

[@OwlTech333]

We added 300g scrap silver contact points at 80% purity (which is around 240g Ag) and recovered 430g dore with contained 90g Au the remaining 90-95% of the dore being silver

[@prospectorpete]

I still see plenty of gold on the bits removed. It seems like a silly way to process them. Why wouldn't you just use nitric acid like everyone else

[@OwlTech333]

All that glitters is not gold what you see is lead oxide

[@OwlTech333]

Oh by the way how much gold you recon is left on them ceramics cuz I can offer you a sweet deal?

[@jakuborvos1575]

Nitric is very silly way of processing ceramic CPUs. Poor reaction with kovar legs, hard to get under the gold braze on the pins and ceram. Best recovery from CPUs is by straight AR. Don´t be misleaded, lead does not stick that badly to the surface of the ceramics. Some gold is lost, but I expect under 5%. Even then you can melt another like 3-4kg portion of lead and re-run the ceramics once again and save it for future stripping. With nitric, you need roughly 4L to dissolve 1kg of metal. So there that figure would be roughly 15 liters. Equals 15 liters of waste to treat - because we aren´t morons to pour it down the drain. He pointed to the efficiency of the process in another way - he is done in 4 hours to the button, and I trust him in this, as I also have experience with similar processes. With AR, it will took at least 1 day. Your time is also money, you need to include it to the overall balance. Numbers for him say this is preferrable.

[@OwlTech333]

@@jakuborvos1575 well I couldn't have said it better myself

[@louismessere6379]

Did you even need the silver to reclaim the gold? You figure the lead bath would be enough.

[@OwlTech333]

@@louismessere6379 I needed the silver for iquarting too

[@evasanchezsaez8685]

When you dissolve the Dore in nitric acid, do you apply heat?

[@OwlTech333]

Yes

[@CrimFerret]

Cool video. I'm a little surprised you didn't redissolve the gold in aqua regia with a bit of sulfuric acid added to precipitate out any remaining lead. Still, it looked pretty good at the end and well worth the time depending on how much the scrap cost.

[@OwlTech333]

The client insisted on recovery only despite the refining would have been another extra hour

[@warbass5274]

That’s what I was thinking with aqua Regia could of saved time with super acid but ended up with one hour plus on lead bath

[@mrkiky]

Is the scrap the most expensive part or is the fuel and chemicals?

[@albatronafredo942]

lol gotta keep that lead in more $$$

[@zibobpompon5768]

@@mrkiky You get the scrap for free if you are smart ,and acid is not very expensive ,and the rest is all about organisation and methodology .

[@MohamedNabil-xz5ob]

Impressive video sir 👏👏 May i ask you where did you find this large amount of CPUs and how much did it cost you ?

[@OwlTech333]

It didn’t cost me a dime

[@MohamedNabil-xz5ob]

@@OwlTech333 like do you go to a local e-waste recycling center to gather the needed amount or what ?

[@OwlTech333]

@@MohamedNabil-xz5ob it's complicated

[@MohamedNabil-xz5ob]

@@OwlTech333 complicated like what like do you steal it or what 😂😂😂

[@OwlTech333]

@MohamedNabil-xz5ob more complicated than that

[@TerribleShmeltingAccident]

can this be done w/copper instead of silver

[@OwlTech333]

No, in this process we try to avoid copper

[@USBEN.]

What was the initial cost of raw material and profit at the end?

[@OwlTech333]

My profit was 30% of the extracted gold

[@USBEN.]

@@OwlTech333 That's pretty Good.

[@evasanchezsaez8685]

A friend of mine is trying to recover gold from CPUs but he follows another process. He's getting nothing...

[@OwlTech333]

What kind of CPUs

[@evasanchezsaez8685]

​@@OwlTech333Anything that contains gold from electronic pieces. From computers, mobile phones,... Why? Is it important?

[@evasanchezsaez8685]

​@@OwlTech333He's following the process that is shown in many videos of KZbin to recover gold from electronic scrap. They use hydrochloric acid and hydrogen peroxide to remove the gold from the scrap. Then, they use hydrochloric acid and potassium nitrate to precipitate the gold. Afterwards, they use potassium metabisulfite to get the gold. The point is that it doesn't work...

[@evasanchezsaez8685]

​@@OwlTech333 When you dissolve the Dore in nutrition acid, do you apply heat?

[@OwlTech333]

@@evasanchezsaez8685 yes

[@LiberalEntrepreneur]

Where do they get these many CPUs?

[@حبيحبي-و5ت]

سلام عليكم ورحمة الله وبركاته يبقاء في الخبث مال الرصاص ذهب ارجو الرد

[@jamesbracken4618]

You got .65% or .0065 of 14,000 grams or 91 grams worth roughly $6500. But you had to pay for the chips and all your equipment and fuel and time. Ain't nothing free. good job.

[@OwlTech333]

The only free cheese is in the mouse trap

[@goldenscrab]

What type of crucible you used for the process mr owl ?

[@OwlTech333]

Mild steel from cut LNG cylinder

[@goldenscrab]

@@OwlTech333 arigato 🙏

[@redbaronrefining5322]

Would you be willing to make a video on all the materials you screen out of the lead baths and try to do a recovery video from the bits of metals left on them? I’m sure there’s a small percentage of pms left behind that alloyed with the silver/lead and clung to the materials. Thank you!!

[@OwlTech333]

You mean all materials as in type or the the whole quantity I’ve processed so far?

[@martinslavov1449]

where did you buy the 14kg of CPUs and what does that cost ?