Barren,
I would rather discuss this via private message.
I would like to remind you that you, and I and 3 other refiners on GRF were each given 1lb of sim cards to run as a test. Yes I was one of the refiners who was involved in that. Matter of fact, if the person who sent you the lb of those sim cards will still speak with you, ask him who had the better results.
I have processed a lot of Pentium Pros, I posted my yield data, an average of .33 per CPU and I stand by that. I would like to know where you were able to recover any silver, if you are talking about what is alloyed with the gold to make it 22k instead of 24k then I would really like to know how many processors you had to refine to get an amount of silver you could recover. If that is the silver content you are talking about then that would mean we are talking about .02 grams per CPU. That means if you ran 100 Pentium Pro CPUs you would get 2 grams of silver worth about $2.00. I fail to see how that adds enough value to justify what you seem to be paying for these CPUs.
I would like to know exactly where you think there is recoverable silver in Pentium Pro's that would make it worth your while, in lots under 100, to even attempt to recover it. And as far as the copper is concerned, do I even need to do the math on that?
The top heat spreader is in fact made of tungsten and copper, but seeing how copper is worth even less than silver, I would like to know how you figure this adds any real refining value to the entire value of a Pentium Pro.
You also didn't mention the second heat spreader or what it's made of. But again, there is no real value in it.
For anyone who would like to know more on the technical aspects of a Pentium Pro processor. Here is the .PDF from the horses mouth so to speak. This document came directly from Intel. You can call Intel and either be sent a download link, or pay for the link to get specifications on any of their processors. Here is a good .PDF on Pentium Pro's, matter of fact this is THE document from Intel themselves. I also have the PDF on the plastic package Pentium Pro nobody ever talks about, it's heat spreader is actually made out of Aluminum.
https://dl.dropbox.com/u/56505223/Re...s/24269001.pdf
Mind you however there is slight differences in the Pentium Pros that can make a tiny bit of difference, but not in the range of .33 - .44. That's just not even within the realm of what is possible. It might mean the difference between .33 and .34 if that. The difference is so small as to be difficult to measure even in large lots. Average would still be .33. If you are getting .44 it means your drop was dirty and you have a lot of other metals involved. Period! They didn't just slather gold on these CPUs willy nilly, it is a fairly exact science and although there are some variances, they are not measurable, not in the way you are suggesting.
If you are refining dirty, and not properly separating the Gold from other metals when you precipitate gold from dirty solutions, then you are dragging down other metals that add weight to your final product/button. That is why, if you are not removing the gold plated heat spreader on the top, and dissolving the tungsten along with everything else, it's better to extract the gold using an organic solvent than it is trying to drop with SMB, or even to selectively precipitate with something else that ignores the tungsten and precipitates the gold anyway. If there is tungsten present, and you do not recover the gold properly, you will still have gold in solution and if you dispose of it, you will be essentially throwing it away. If you are precipitating gold in the presence of tungsten, copper and the metals that make of Kovar, will happily be dragged down with the gold, but gold will be left behind as well.
And if you would like to discuss the other little tiny issue Barren, I am more than happy to set you straight on that as well. For those that are reading this, I apologize if I sound a little gruff in this response, it's not my intent to make other people look bad, however, at no time will I allow certain people to question my refining skills when I already know implicitly about their own.
Scott
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