Weird part with lots of gold

[Geo]

I understand that weights and composition varies from series to series so i went to the scrap pile and pulled some examples. i have to disagree about no gold bonding wires.











as far as gold content, that will vary as well.

 

[Geo]

 

[kurtak]

This thing weight about 40gr as I remember correctly. There are little or none bonding wires inside. Plating is very thin both on top and pins. It yields around or less of P4 processor. Top base as I remember correctly looks and feels like tungsten copper alloy.

I have a couple dozen of these & they all have bonding wires - 4 rows top & bottom of the silicon chip that's inside (just like the pics Geo posted) plus the gold plating which adds up on pound lots

A company like Dynamic (which is a company like boardsort) doesn't add an item like this to their purchase price list without knowing the recovery - if they are paying $30/lb they expect that plus a profit back in recovery - I am sure they based their purchase price on an assayed lot run (I could be wrong) they have them listed with there processor pricing & they tend to pay a bit less then Boardsort for their processors --- so though they my not be the best in recovery they are not the worst ether

 

[kurtak]

Ok - I couldn't help my self - counted the bonding wires in the one sitting on my desk & came up with 92 in this one

Kurt

Edit to say --- nice pics Geo

 

[kurtak]

Ok - I couldn't help my self - counted the bonding wires in the one sitting on my desk & came up with 92 in this one

Kurt

Edit to say --- nice pics Geo

Opps - made a mistake here - what I did was counted one row of the dots on the ceramic plate where the bonding wires are attached to the ceramic plate & I came up with 23 dots in that row - there are 4 rows on each the top side & bottom side of the silicon chip - I then multiplied the 23 (wires) X 4 (rows) = 92 (wires) but that's only one side of the silicon chip --- so it is actually 92 + 92 = 184 (wires)

I know that will vary from chip to chip - that's just the one sitting on my desk so was handy

The point being - the gold is there --- making a wild guess I am going to say that if Dynamic is paying $30 a pound for them actual recovery should be at least $40 & maybe as high as $60 per pound --- that's with gold at $1293 which is the gold price on my current price listing

The top metal plate (that the window is mounted in) is magnetic so not sure what kind of problems that would cause in processing

Kurt

 

[etack]

A company like Dynamic (which is a company like boardsort) doesn't add an item like this to their purchase price list without knowing the recovery - if they are paying $30/lb they expect that plus a profit back in recovery - I am sure they based their purchase price on an assayed lot run (I could be wrong) they have them listed with there processor pricing & they tend to pay a bit less then Boardsort for their processors --- so though they my not be the best in recovery they are not the worst ether

I have talked to a few large buyers and most of the time Processors are a losing money or breaking even adventure. Most buyers just buy them to get the more profitable products like your boards. They don't want processor price to make your decision in where your send your E-scrap.

Look at boarsorts.com PP prices they are break even @$85.00Lb.

Ramis almost the same way too.

Eric

 

[Alentia]

Look at boarsorts.com PP prices they are break even @$85.00Lb.

Ramis almost the same way too.

Eric

Or even loose money if all you send them 256K cache processors without 512K cache in the mix. Pins in ceramic CPU are the main source of the gold.

boardsort for a reason pays $5/lb for pinless processors.

 

[goldsilverpro]

If the gold bonding wire is .001" dia., it's worth about $0.01/inch. If .0007" dia., about $0.005/inch.

 

[Goldwasser]

Hello GRF'rs, long time no post.

I thought I could add a little to the discussion. We actually see two different styles of DLP's at boardsort.com. In fact we recently updated our price list to reflect the different grades of DLP.

1) Ceramic based DLP's (the type the OP posted) are the more desirable style and the most common that we see. While I cannot give you actual recovery data (I am a buyer not a refiner) I can tell you that we buy these types of DLP's at $37 per pound currently.

2) Fiber based DLP's (I am attaching a picture of a set) which only pay $6.75 currently (essentially the same price as a P4 as mentioned by Alentia). As you can see they have a considerable amount of dead metal and little to no visible plating, unlike its more prestigious cousin.

Attatchment Picture = Lower Valued Fiber DLP

 

[lazersteve]

I missed this thread when it was first posted.

DLP ceramic cpus are definitely worth running. Yields range from 1.2 to 1.5 grams per pound depending on cpu size, debris in mix, and if heatsinks are present.

Processing time for 100 pounds is 3-5 days from scrap to gold bar..

Here are a few snapshots of how the left overs should look:

Steve