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jm, I'm in the middle of stripping down 48 CD drives and around 18 old 3 1/2 inch floppy drives. The only Au I have found on the floppys are the pins in the cable connector. What's nice is that over half ov them are plated right on through the header to the solder connections on the board.
 
tlcarrig said:
jm, I'm in the middle of stripping down 48 CD drives and around 18 old 3 1/2 inch floppy drives. The only Au I have found on the floppys are the pins in the cable connector. What's nice is that over half ov them are plated right on through the header to the solder connections on the board.

also each board should have a couple of small flatpacks, do not forget to remove these and store away for later processing.
 
Geo said:
tlcarrig said:
jm, I'm in the middle of stripping down 48 CD drives and around 18 old 3 1/2 inch floppy drives. The only Au I have found on the floppys are the pins in the cable connector. What's nice is that over half ov them are plated right on through the header to the solder connections on the board.

also each board should have a couple of small flatpacks, do not forget to remove these and store away for later processing.

Yes, they add up quite fast and gold in them is nice. I sometimes wonder that there may be probably more gold inside them on ram stick with 16 of them then plated on contact area aka finger. Well I try do do few more tests.
http://goldrefiningforum.com/phpBB3/viewtopic.php?f=52&t=11827
 
kjavanb123 said:
I went through the entire bag that contained the e-scraps and most of them are CD-ROM drive I guess, but could find the following cards which seem to be audio and graphic cards, which seem to have the fingers you mentioned in your post here. Please advise

View attachment 4

Thanks in advance
Kj

I also messed around with the copper coils in this board, and It weighed around 2.75 grams what seems to be pure copper from on that board. So by doing the math here;

150 gram board has 2.75 grams of pure copper coil
100 grams is 100 x 2.75 / 150 = 1.82% copper. which is pretty good for mining world to have this grade copper. Just a thought.

Thanks
Kevin
 
kjavanb123 said:
kjavanb123 said:
I went through the entire bag that contained the e-scraps and most of them are CD-ROM drive I guess, but could find the following cards which seem to be audio and graphic cards, which seem to have the fingers you mentioned in your post here. Please advise

View attachment 4

Thanks in advance
Kj

I also messed around with the copper coils in this board, and It weighed around 2.75 grams what seems to be pure copper from on that board. So by doing the math here;

150 gram board has 2.75 grams of pure copper coil
100 grams is 100 x 2.75 / 150 = 1.82% copper. which is pretty good for mining world to have this grade copper. Just a thought.

Thanks
Kevin
actually the copper content is much higher than that.most boards have multi-layer leads which means there is copper inside the board itself.the entire board would have to be processed to retrieve all the copper and that is a bare board,remember that all the components on the board will most likely have copper legs.with my meager math skills ive estimated the copper yield from the average mother board to be between 1.5 to 2 pounds of copper per board.
 
Geo said:
kjavanb123 said:
kjavanb123 said:
I went through the entire bag that contained the e-scraps and most of them are CD-ROM drive I guess, but could find the following cards which seem to be audio and graphic cards, which seem to have the fingers you mentioned in your post here. Please advise

View attachment 4

Thanks in advance
Kj

I also messed around with the copper coils in this board, and It weighed around 2.75 grams what seems to be pure copper from on that board. So by doing the math here;

150 gram board has 2.75 grams of pure copper coil
100 grams is 100 x 2.75 / 150 = 1.82% copper. which is pretty good for mining world to have this grade copper. Just a thought.

Thanks
Kevin
actually the copper content is much higher than that.most boards have multi-layer leads which means there is copper inside the board itself.the entire board would have to be processed to retrieve all the copper and that is a bare board,remember that all the components on the board will most likely have copper legs.with my meager math skills ive estimated the copper yield from the average mother board to be between 1.5 to 2 pounds of copper per board.


I think the average motherboard from a common desktop computer only weighs about one pound, so there cannot be more Copper than the whole board weighs. :|
 
im sorry about the misprint,it was late.i meant that weight in a PC,after reading it i realize i said mother board and didnt add the whole PC.
 

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