How to estimate the amount of gold in electronics and jewelry

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ChemGeek said:
How do you get around of this problem?

I'm not depopulating anything - just gathering, sorting and packaging boards, even ceramic cpu`s I found that it's easier to sell on ebay...

I might garage refine for fun on hobby basis come summer time :)

snoman701 said:
I will say...I'm not talking about taking N/S bridges off motherboards. In that case, you might as well just throw the rest of the board out.

What do you take off motherboards, if anything, how would you define cherry-picking?
 
snoman701 said:
Simple fact of the matter is that if I can refine it and get 90-98% of the value instead of selling it and getting 50%, that's business...and my buyers respect that. In fact, they do the opposite...they sell stuff they pay scrap prices for as refurbished.
How are you reclaiming 90-98% as a smalltimer?
For that you would need to reclaim copper as well, reclaim tin and silver from solder, reclaim silver and any palladium from MLCC-s etc.

I will say...I'm not talking about taking N/S bridges off motherboards. In that case, you might as well just throw the rest of the board out.
I have found exactly the opposite.
My buyer have said that he doesn't mind if these (N/S bridges) are removed, and as long as all pins and other chips are in place he won't downgrade and pay full price.
Yet I am dealing with an employee, not a boss but I have taken heart in this advise and all NS bridges are meticulously removed. Hundreds of kg of boards was sold and they are actually *calling me* to provide more boards asap because business is very good. They pay approx. $6 per kg of big socket boards.
Now I wonder, am I dealing with morons or perhaps they are very crafty peoples and ultimate moros are somewhere further downstream?
Or perhaps they are making a well calculated decision, because even without BGA/NS bridge profit is still good?
Or perhaps workers are taking mickey of their boss?
These are questios I will probably never know an answer to and I will not try to find these answers from them.
They say, they are happy, I am happy as well and it will be left that way.
 
niks neims said:
I'm not depopulating anything - just gathering, sorting and packaging boards, even ceramic cpu`s I found that it's easier to sell on ebay...

I might garage refine for fun on hobby basis come summer time :)
You have written that you seek an honest partner whom you know and make a deal once you are both happy with an outcome.
So it seems that there are some peoples capable to refine small lots at profit. I wonder how they do it with motherboards without reclaiming metals other than Au.
You are obviously not dealing with *the faceless*, because if you did, you wouldn't call them "honest partner".
Or perhaps you are only seeking an "honest partner" with no warranty and only remote hope that you will ever find one?

Regarding nice CPU-s like Pentium Pro, early Pentiums (up to 90MHz etc).
I have already determined that they are much more valuable than gold inside them.
So all of them as long as not damaged in some obvious way are kept safely and treated with care.
They are not going into AR or anything like that.
 
anachronism said:
Sno

That muppet of an employee is dangerous to his boss' business. Most of the gold IS in those chips- the rest is chump change on many types of board.

No crap!

The rest is what pays for the refining fees to get the gold out of the bga.

There's not a lot of boards that can have the BGA's removed without devastating the grade of the board...and that falls within the skill of the sorter, and how many subcategories they've got...mostly how much they will pay for really good boards.
 
snoman701 said:
No crap!

The rest is what pays for the refining fees to get the gold out of the bga.

There's not a lot of boards that can have the BGA's removed without devastating the grade of the board...and that falls within the skill of the sorter, and how many subcategories they've got...mostly how much they will pay for really good boards.
For sure my buyer and in particular his sorter doesn't see any problem with old type large socket computer motherboards being deprived of BGA, as long as there are no pins (and fingers if applicable in case of some accessories) missing, all other chips are in place and batteries, radiators and steel fixings are removed.
They have already paid full price few times, beginning in December last year and they are calling me to deliver as mamy boards as possible ASAP.
I am already considering buying big, one ton sized lots from other scrap yards, stripping all BGA and selling rest to that particular company at about 10-20% monetary loss.
They don't seem to be mad. They say, the business is very good, they can sell any amount they get hold of.
I suspect that either in those old type motherboards BGA are not such a great part of values as we believe (but I am very inexperienced, so I do not know) or alternatively there must be some unknown moron further downstream who is funding all of that.

Again - it is not my business to find out about their reasoning. They know that BGA are missing, consider it minor and irrelevant and still pay full price. It is all, what I care about.
 
ChemGeek said:
I am already considering buying big, one ton sized lots from other scrap yards, stripping all BGA and selling rest to that particular company at about 10-20% monetary loss.

Dude, you are gonna get screwed on this big time, don't gamble any more that you can afford to lose completely....

ChemGeek said:
So it seems that there are some peoples capable to refine small lots at profit. I wonder how they do it with motherboards without reclaiming metals other than Au.

Don't think that it can be done, you need to get at least Au+Cu+Pd+Ag.... from the top of my head small socket MB values are about Cu:~20-30%, Au:~60-70% (about 50-70% of that being in North+South bridge BGA), Ag+Pd:~10%... And define small lots?
So far recyclers have been getting away without fully accounting for Sn, Ni, Ta, in europe at least...
 
niks neims said:
ChemGeek said:
I am already considering buying big, one ton sized lots from other scrap yards, stripping all BGA and selling rest to that particular company at about 10-20% monetary loss.

Dude, you are gonna get screwed on this big time, don't gamble any more that you can afford to lose completely....
I would only proceed with one such lot per month. I would not lose everything.
At worst I would be losing scrap yard premium. They tend to sell 10-20% higher than they buy. I would make sure that BGA-s on boards which I buy are not missing. If not allowed to hand check each board, I would refuse to buy.
The risk is that my wonderful buyer would just chage his mind and not buy next lot. My loss would amount to ~15%, eg 150kg of boards at $6/kg, eg $900.
That won't break me and I would remain in healthy profit base on up to date activity from last 3 months.

ChemGeek said:
So it seems that there are some peoples capable to refine small lots at profit. I wonder how they do it with motherboards without reclaiming metals other than Au.

Don't think that it can be done, you need to get at least Au+Cu+Pd+Ag.... from the top of my head small socket MB values are about Cu:~20-30%, Au:~60-70% (about 50-70% of that being in North+South bridge BGA), Ag+Pd:~10%... And define small lots?
So far recyclers have been getting away without fully accounting for Sn, Ni, Ta, in europe at least...
So if it cannot be done, then how are you going to find an honest man who will refine it for you and share profit? You may still need to sell your stock to scrapyard.
Anything up to 1 ton of boards per quarter or 4 tons a year I consider small lots.
Base on your calculation it looks like BGA are delivering 30-50% of values of *new* boards.
So perhaps it will make 15-25% of values of old boards.
So they should not be exactly "worthless" without BGA. Seems that my buyer is making an educated decisions while purchasing them. Probably some moron-refiner downstream or very low profit margin accepted.
No other easy explanation unless sorter is a monkey or he has some grievances against his boss.
 
ChemGeek said:
My loss would amount to ~15%, eg 150kg of boards at $6/kg, eg $900.

What is your plan of action if you show up with a ton of already depopulated boards and they refuse you at the gate, what do you think you'll get from next best buyer? Ask around - that is your real cost of risk... You'll be out $7000 for the material, you'll have your stash of about 10-15 kg of BGAs (hopefully rather high yielding, from older, large socket MB - best case scenario about 5.5g Au/Kg, so about $2000-$3000.... I never got that good of a yield, though) but what do you think you will get for the pile of partly depopulated large socket motherboards from other buyer? I, myself, would not feel comfortable paying much more than $0.5/kg for computer boards of unknown quality that have been messed with in any way - bottom of the barrel brown board price, in other words.... Now to manually depopulate 2000 motherboards (pick of BGAs) it will take you at least 50-70 man hours, what's your labor costs? Any way you add this up you stand to lose much more than $900 if they suddenly refuse to buy...

Probably, though, due to the decay of white man's culture, you'll just try to take the easy way out - turn around and swindle some other unsuspecting buyer....
So if it cannot be done
I said it can't be done profitably without recovering Ag, Pd and Cu along with Au

how are you going to find an honest man who will refine it for you

In fact, currently, I am in the middle of the negotiations with a member of this very forum that hopefully will attempt to have a go at refining some lots of small-socket motherboards for me, if the deal goes well, I will be more than happy to recommend him to you (with his permission). I really do feel there is a business opportunity right now for a middle-to-small size (still, professional scale, of course) e-scrap refiner - the insane charges and fees of larger guys really rubbed me the wrong way :)

Base on your calculation it looks like BGA are delivering 30-50% of values of *new* boards.
So perhaps it will make 15-25% of values of old boards.
You'r speculating! but so am I :)... So it's cool, as long as you understand that none of these figures are set in stone....

So they should not be exactly "worthless" without BGA

No, but you could have removed also ICs, MLCCs, pins and who knows what else along with those BGAs... So if i`d have to buy this kind of material I either have to:
a)Check out each and every board and make calculations accordingly - and that is just not worth it...

b)Assume worst case scenario - hence the low-grade brown board price...

So it is either a standard type of material or schrodinger's cat in the sack

No other easy explanation unless sorter is a monkey or he has some grievances against his boss.
They do not know their material well enough and are making wrong assumptions... Is it their own fault? Of course! Should you still take an advantage of them - well that is for you to answer for yourself...
I'll grant you that:
They know that BGA are missing, consider it minor and irrelevant
Does absolve you a little ethically, but still this whole deal is built on clay feet and you should not be surprised if it falls through suddenly...
 
niks neims said:
What is your plan of action if you show up with a ton of already depopulated boards and they refuse you at the gate, what do you think you'll get from next best buyer? Ask around - that is your real cost of risk... You'll be out $7000 for the material, you'll have your stash of about 10-15 kg of BGAs (hopefully rather high yielding, from older, large socket MB - best case scenario about 5.5g Au/Kg, so about $2000-$3000.... I never got that good of a yield, though) but what do you think you will get for the pile of partly depopulated large socket motherboards from other buyer? I, myself, would not feel comfortable paying much more than $0.5/kg for computer boards of unknown quality that have been messed with in any way - bottom of the barrel brown board price, in other words.... Now to manually depopulate 2000 motherboards (pick of BGAs) it will take you at least 50-70 man hours, what's your labor costs? Any way you add this up you stand to lose much more than $900 if they suddenly refuse to buy...
I think, you tend to see glass half empty.
Of course the right approach would be to find another buyer. If I have found one, there is no reason to believe that another one would not turn in.
But lets say that all buyers go on strike and refuse to pay full price for BGA-free motherboards.
In such situation, I believe, someone would pay 20-30% less.
They still have a look at each board by hand (albeit rather fast). At least my buyer or rather his sorter does.
But lets assume that noone have turned in.
Then I would strip all remaining chips to double gold recovery, also strip pin bearing sockets with a sort of small pneumatic hammer. Also recover MLCC in the same way.
These pin bearing sockets sell well on auctions so a lazy guy don't even need to piddle with separation of pins. Many buyers pay much more than gold content is worth.
Gold fever on ebay is hilarious.
I observe what is sold there and elsewhere and for how much.
I have designed and tested ridiculously good deals on ebay while dealing with mobile phone scrap.
Actually so good and yet absurd somehow, that I will not disclose details publicly not to make competition to myself.

There is no way that I would fail to turn profit or at least get my money back, even if my main buyer refused a deal and no other one was found, albeit at the cost of considerable labor.
In any case I have a plenty of time to waste and I love to destroy electronic devices so this wasted labor is not of a great concern.

In fact, currently, I am in the middle of the negotiations with a member of this very forum that hopefully will attempt to have a go at refining some lots of small-socket motherboards for me, if the deal goes well, I will be more than happy to recommend him to you (with his permission). I really do feel there is a business opportunity right now for a middle-to-small size (still, professional scale, of course) e-scrap refiner - the insane charges and fees of larger guys really rubbed me the wrong way :)
Always good to know someone who can do something useful :)
As for longer term business opportunity, I have my doubts.
If it ever became feasible for a small guy to successfully compete with *the faceless*, he will soon enough find regulatory burden growing.
There will be ever increasing reporting requirements, necessity to secure ever expanding catalogue of permits, demands to invest in safe zones around his business due to enviromental concerns declared at a whim, requirements to account for PM for tax reasons (and this would call for verifiable assays of his small few hundred kg lots, $500 a go etc).
Small guy will make small money for few years before he becomes tedious for bigger men and then he will either go out of business or go out of social structures widely known as the West, European Union, United States, OECD etc.
Small guy has no business there. Free market here is an illusion and "democracy" becomes to be a joke.
 
ChemGeek said:
I think, you tend to see glass half empty.

You know the old joke?:

PESSIMIST: Dark tunnel.
OPTIMIST: Light at the end of the tunnel.
REALIST: A train.
TRAIN OPERATOR: 3 idiots standing on the tracks.

all jokes aside you don't seem like the type that come here to listen and learn, but I am gonna try for one last time:

If I have found one, there is no reason to believe that another one would not turn in
Wrong! Find at least 2 different buyers before proceeding, even better 3 or more. A lone buyer is the definition of unreliability....

But lets say that all buyers go on strike and refuse to pay full price for BGA-free motherboards.
In such situation, I believe, someone would pay 20-30% less.
Why do you believe so? You do realize that when processing PCB on a large scale it makes no difference for the work involved if the BGAs are removed or not? It still takes the same amount of work to grind & mill the boards, recover and refine the PM - but the payoff is significantly less... You have been told multiple times in this thread that BGAs constitute up to or more than 50% of the value, what is the reasoning for some-one to pay only 20-30% less?... Unless you scam them in to buying of course...

In any case, I urge you, before you proceed, plan out your exit route precisely - find out exactly what you'll honestly get for large socket MB with removed BGAs - for example - Jon (anachronism) is from your country - what would he pay for a ton of them? It is very dangerous assumption you are making and you are setting yourself up to be hurt (financially) or to intentionally hurt someone else, when you'll dump your boards on to them...

Then I would strip all remaining chips to double gold recovery, also strip pin bearing sockets with a sort of small pneumatic hammer. Also recover MLCC in the same way.
[..]
There is no way that I would fail to turn profit or at least get my money back, even if my main buyer refused a deal and no other one was found, albeit at the cost of considerable labor.

So illegally processing tons of PCBs one-by-one in your back-yard manually with nothing but a little elbow-grease? :mrgreen: and how much money will you make for your labor before G-man comes for you? What is the minimum-wage in UK right now?
 
niks neims said:
Why do you believe so? You do realize that when processing PCB on a large scale it makes no difference for the work involved if the BGAs are removed or not? It still takes the same amount of work to grind & mill the boards, recover and refine the PM - but the payoff is significantly less... You have been told multiple times in this thread that BGAs constitute up to or more than 50% of the value, what is the reasoning for some-one to pay only 20-30% less?... Unless you scam them in to buying of course...
Here I can present some reasoning:
1. Weight of old and new MB is very comparable, hence processing cost incl. shreading, grinding is comparable as well.
2. New goes at 1/2 price of old - accordingly more values on old.
3. Only from old MB BGA is taken out.
So that imply that old MB without BGA will keep about the same value as new and this is under most pessimistic assumptions.
In reality it will be more likely 75% - we must speculate because there is no other feasible way around it.
Paying for assays of small lots is out of question.

To support this further I might add that *new* MB with flip chip BGA (eg no gold) sell in few places known to me for as much as those with "proper" BGA.
Anyway, even proper new BGA are often with copper bonding wires.
 
ChemGeek said:
niks neims said:
Why do you believe so? You do realize that when processing PCB on a large scale it makes no difference for the work involved if the BGAs are removed or not? It still takes the same amount of work to grind & mill the boards, recover and refine the PM - but the payoff is significantly less... You have been told multiple times in this thread that BGAs constitute up to or more than 50% of the value, what is the reasoning for some-one to pay only 20-30% less?... Unless you scam them in to buying of course...
Here I can present some reasoning:
1. Weight of old and new MB is very comparable, hence processing cost incl. shreading, grinding is comparable as well.
2. New goes at 1/2 price of old - accordingly more values on old.
3. Only from old MB BGA is taken out.
So that imply that old MB without BGA will keep about the same value as new and this is under most pessimistic assumptions.
In reality it will be more likely 75% - we must speculate because there is no other feasible way around it.
Paying for assays of small lots is out of question.

To support this further I might add that *new* MB with flip chip BGA (eg no gold) sell in few places known to me for as much as those with "proper" BGA.
Anyway, even proper new BGA are often with copper bonding wires.


I have nothing to add, I wouldn't dare argue against such much logic, so sound...

Just do yourself a favor - practically go through the whole cycle with a lot of 100 kg of boards instead of 1000 kg. You know, proof of concept style:
1. Peel off BGAs.
2. Go to a different buyer; get rejected.
3. Offer 20-30% lower price, get rejected again.
4. Manually Depopulate, sort and store everything you can from the board (IC,sockets, Pins, MLCC)
5. Sell on e-bay or process yourself
6. Pay to dispose of waste properly
7. Count the hours you spent vs the money you made. was it worth it? did you screw anybody along the way? can you live with that?

Before buying up tons of boards, do all of these steps at least once, in practice, don't just assume it will work because you really, really want it to...
 
Hi all,
Btw, today I got heartlessly cheated.
Opened parcel which came yesterday.
Bought few MB via Internet worth nominally $50 and items which came were entirely different than those on advertised photo.
On the top of it nearly *all* MLCC and most of chips were patiently soldered out.
I admire patience of the cheater in this respect, as it was "precision" job.
The best joke were BGA though.
On few *old* boards with large big square socket original BGA were unsoldered and modern flip chip versions with crystal on the top were soldered in to replace particulary a certain size of the chip.
I have only recognized that cheat because I have never before seen old type MB with large socket and old type (bigger) RAM slots to house modern type flip chip BGA.
Time loop or something...
Further inspection after undoing few showed a lot of tin under the base.
I believe that if such a job was done on new type MB, even professional would be made in, even dealing face to face.
So I have reported it here for benefit of others.

@anachronism,
Regardless, how you might hate it, you still must *assume* certain things.
Once you send your scrap to refinery or to whoever buys it, you have to *assume* that they are going to pay you, which is far from certain these days. You are also assuming that whoever does an assay for you does not have some secret deal with refinery purchasing your stuff etc.
Life is impossible without a lot of assumptions.
Even basic claims upon which maths is built (axioms) are just assumptions.
 

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