My results of specific types of IC chips, flatpacks and BGA

[andu]

This is a helluva thread, finally done reading. I loved it.
There's only two things I think I could add.
1- After reading and thinking about the fiber wool problem in pcbs, no idea if feasible or it works but google says sodium hydroxide would get rid of it.
2- When there's a small amount of gold you want to recover from say the 5kg of copper, wouldn't it be better to melt it into a ingot and do electrolysis instead of dealing with so much waste and work?

Btw regarding telecom board chips, I got ahold of a few more boards of the kind, and i'm fairly baffled, out of 4 devices i opened i stumbled upon 4 different kinds of boards all with different and amazing looking chips, some aren't gold flashed/plated like the ones i shown long ago but silver and at the same time it had more processors and stuff, i might motivate tomorrow and take some pics and upload to the thread i started, this thread got me really excited about processing chips alone eventho i'm certain the boards have quite a bit of gold and what not themselves.

I'm tired of waiting and pilling up so I will sort the chips and get some nitrate and share results in a hopefully close future.

 

[GoIdman]

Hello again everyone,

First of all I'd like to thank the OP @Tzoax for your tremendous work and contribution in correlation to this thread. Your time, effort, energy and the intricate detailed information posted by you to enhance our knowledge here is priceless and I along with others hope to see you back soon.

I do have many questions but I'll save them for later on, for the time being, below mentioned is a type of chip that I'm about to acquire but the seller wants me to give him the best price. I went through this post for processing IC chip clarification ( after patnor, kurtak remaining) and found the chip encircled in red close to what I am being given. I haven't ever done these but unfortunately I couldn't quite find the correct data for recovery in the pdf that I've attached with this post too. As far as I understand and please correct me if I'm wrong, based on the earlier experiments by the OP, that I can quote a price based on the average as mentioned? Or if someone out there has actually done these can provide a direct number for a better yield prospect hence giving a fair quote up ahead.

From left,

XILINX 1 and 2 are being sold, seller asks for price.
XILINX 3 is what I found in of the posts.

PS. does the speed mean anything in recovery? The speed mentioned on his chip is 15 C and the one I've posted is 7 C.

Thanks in advance.

Did you purchase and process those items? Can you provide a yield on those IC`s?

Pete.

 

[J.Najam]

Did you purchase and process those items? Can you provide a yield on those IC`s?

Pete.

Hello Pete,

No I couldn't purchase these at all. The seller asked for a rate, I gave him my quote based on the yield mentioned in this thread earlier.

He prolonged his intention to sell and eventually stopped replying. Like I mentioned it in another post, it sadly is very hard to buy scrap in my country if you're not part of a lobby.

 

[kurtak]

1- After reading and thinking about the fiber wool problem in pcbs, no idea if feasible or it works but google says sodium hydroxide would get rid of it.

Per the bold print - that is the glass fiber (fiberglass) in the fiber board part of BGA chips (not the black epoxy part of the chip) so no - sodium hydroxide will not get rid of it - its glass

Not sure what your google search is talking about but I suspect it is talking about using sodium hydroxide to get rid of "solder masking" - a coating found on the "surface" of circuit boards

2- When there's a small amount of gold you want to recover from say the 5kg of copper, wouldn't it be better to melt it into a ingot and do electrolysis instead of dealing with so much waste and work?

Yes that is most certainly one way to deal with it - it's an incineration process followed by a smelting process followed by an electrolytic cell (like a silver cell only a copper cell) --- much less chem waste & the process used by the BIG BOYS in processing LARGE volumes of PM recovery from circuit boards

Kurt

 

[J.Najam]

Per the bold print - that is the glass fiber (fiberglass) in the fiber board part of BGA chips (not the black epoxy part of the chip) so no - sodium hydroxide will not get rid of it - its glass

I assume he's talking about the green mask on PCBs

 

[SpaSesino]

Alguien aquí dijo que simplemente lo dejaron afuera en el clima y lo dejaron oxidarse, después de unos años la madre naturaleza desapareció la mayor parte.
Límpielo y revíselo de vez en cuando.

Sorry for my Google Translate English.

I am making my first contribution to this forum, since seeing this message, I remember a friend who told me that he took some pins that had been in AP for a day into a bucket (the AP container broke or there was some problem and he put them away). remove), and within a week they were so rusty that they broke.
I wonder if soaking the pins in AP and leaving them outdoors for a long time would shorten the waiting time.

 

[GoIdman]

Sorry for my Google Translate English.

I am making my first contribution to this forum, since seeing this message, I remember a friend who told me that he took some pins that had been in AP for a day into a bucket (the AP container broke or there was some problem and he put them away). remove), and within a week they were so rusty that they broke.
I wonder if soaking the pins in AP and leaving them outdoors for a long time would shorten the waiting time.

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.

 

[BShan]

I wonder if soaking the pins in AP and leaving them outdoors for a long time would shorten the waiting time.

Processing Iron Wires from inside of IC chips < patnoor mentions doing that intentionally. I wonder if this can be done without any HCL?

 

[user 72646]

Hi

I ran 305g of green piece under the BGA chips and got 0.25g gold.

So that makes my yield from them 0.8g gold from 1kg of them.

Here are the pictures
View attachment 45924

View attachment 45925

View attachment 45926

View attachment 45927

Thanks and best
KJ

Hi
What did get from solution drop?
MM

 

[Ayham Hafez]

Its really a very valuable thread, thanks for the author.

I know my way to recover gold from ic chips is not what most of the guys in this forum recommend, but when I compare the posted results here with my results of recovering same ic chips types, I find that I have much recovery rate, that's because I ignore silver recovering and just use AR after Incineration and grinding, also I don't seperate magnetic stuff.

 

[Mariusz K]

Haha funny

 

[J.Najam]

I am considering which type of chips i will test next...and i remember that once long time ago i said i will test this type - very small IC chips with 3 legs like in the picture:

View attachment 40951

Laptop motherboards, graphic cards and other PC components are loaded with them, they are everywhere. They are tiny....but i want to see are those worth for cherry picking - what is estimate value of one IC chip of this kind.

View attachment 40953

I checked a few markings and i found it is SOT-23 package.

View attachment 40954

View attachment 40952

And i checked what i could expect from them - about 1.7g of gold / kg.

View attachment 40955

So i think those will be next.

Can anyone guide where can we find such data? Its quite interesting but my search results aren't quite up to the mark. My search enigne redirects me to seller domains like alibaba or aliexpress etc.

Any help please? much appreciated.

 

[canedane]

Can anyone guide where can we find such data?

You have found it It is all in these thread.
Henrik

 

[J.Najam]

You have found it It is all in these thread.
Henrik

Ah yes I know, I've gone through this entire thread, but you see this lone transistor that I've pointed out has had many types and I'm not sure where I can find the data to this specific one. there are many markings such as Y2, M6 or so to mention more of the obsolete ones. Hence finding accurate data before acquiring the material would be beneficial. Some transistors have gold and some have none at all. Can't dive into buying the ones with only aluminum and incur any further losses.

The one mentioned here is only one type which states it has 0.014 au, but is it percentage based or weight? How much by weight? last night I went through a search and was able to find out that such small components barely weigh 250miligrams in total and contain 0.076 milligrams worth of gold in each, so that makes it 0.000076 grams of gold per piece. I wanted to confirm if this info was correct or not? Did not quite have a second resource available to double check the numbers.

 

[Wonka]

@Tzoax I wish you would do different types of ram chips. I.E ddr1-4 pc1-4 by each type and also by GB. That would be interesting to know.

 

[Yggdrasil]

@Tzoax I wish you would do different types of ram chips. I.E ddr1-4 pc1-4 by each type and also by GB. That would be interesting to know.

He have not been here since June 2021.
If you hold your cursor over the avatar, such information pops up.

 

[zakir]

Now I have available list of the dram chips as attached..how much I can get I mean how much gramm s or any info if I can getfrom 2 300 000 pcs of chips?

 

[Wonka]

Now I have available list of the dram chips as attached..how much I can get I mean how much gramm s or any info if I can getfrom 2 300 000 pcs of chips?

That’s a lot of chips.

 

[Wonka]

That’s a lot of chips.

Your picture doesn’t load.

 

[Yggdrasil]

Your picture doesn’t load.

It is a spread sheet.