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Martijn said:
Why would we need ultra fine copper in refining precious metals?
Click to expand...

300 (or 325) mesh copper is your best choice when it comes to cementing PGMs --- FAR better then cementing PGMs with a solid bar of copper & an air bubbler

And for what it is worth - when done right - you can cement PMs (gold - silver or PGMs) using copper powder & have your PMs come back very near pure - if not pure

I have successfully cemented PMs from solutions using copper powder & had my PMs come back between 995 & yes even 999

Copper powder in fact does have a place/use in the refining of PMs - this was taught to me by 4metals like 9 years ago which you can read about here ----------

https://goldrefiningforum.com/threads/fuzz-button-interconnects-need-some-advice.22203/#p232030

Ever since 4metals taught me about the use of copper powder in refining I have kept some on hand as another tool in my tool box & in "certain" situations is my preferred method for getting my PMs back from solutions

In fact at one point in time I was going to make my own atomizer in order to make my own copper powder for using in my refining - the only reason I did not make the atomizer for making my own copper powder was that it was about the same time I was deciding to retire from my full time refining

Kurt
 
kurtak said:
300 (or 325) mesh copper is your best choice when it comes to cementing PGMs --- FAR better then cementing PGMs with a solid bar of copper & an air bubbler

And for what it is worth - when done right - you can cement PMs (gold - silver or PGMs) using copper powder & have your PMs come back very near pure - if not pure

I have successfully cemented PMs from solutions using copper powder & had my PMs come back between 995 & yes even 999

Copper powder in fact does have a place/use in the refining of PMs - this was taught to me by 4metals like 9 years ago which you can read about here ----------

https://goldrefiningforum.com/threads/fuzz-button-interconnects-need-some-advice.22203/#p232030

Ever since 4metals taught me about the use of copper powder in refining I have kept some on hand as another tool in my tool box & in "certain" situations is my preferred method for getting my PMs back from solutions

In fact at one point in time I was going to make my own atomizer in order to make my own copper powder for using in my refining - the only reason I did not make the atomizer for making my own copper powder was that it was about the same time I was deciding to retire from my full time refining

Kurt
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I agree, but what they are trying to sell here is something entirely different.
Etter by size or purity, not entirely clear.
1000 USD per gram is quite steep.
 
kurtak said:
300 (or 325) mesh copper is your best choice when it comes to cementing PGMs --- FAR better then cementing PGMs with a solid bar of copper & an air bubbler

And for what it is worth - when done right - you can cement PMs (gold - silver or PGMs) using copper powder & have your PMs come back very near pure - if not pure

I have successfully cemented PMs from solutions using copper powder & had my PMs come back between 995 & yes even 999

Copper powder in fact does have a place/use in the refining of PMs - this was taught to me by 4metals like 9 years ago which you can read about here ----------

https://goldrefiningforum.com/threads/fuzz-button-interconnects-need-some-advice.22203/#p232030

Ever since 4metals taught me about the use of copper powder in refining I have kept some on hand as another tool in my tool box & in "certain" situations is my preferred method for getting my PMs back from solutions

In fact at one point in time I was going to make my own atomizer in order to make my own copper powder for using in my refining - the only reason I did not make the atomizer for making my own copper powder was that it was about the same time I was deciding to retire from my full time refining

Kurt
Click to expand...
You said it before, but after reading that thread i'm defenitely trying it. I will use my fine copper cell copper powder after straining out 300 mesh and a sulfuric acid rinse.
 
Alondro said:
Mix this powder with gold oxide... then apply blowtorch flame... and then proceed to explode. (produces the most violent thermite-type reaction known!)
Click to expand...
I can't see how, Gold is non reactive and Copper almost non reactive.
Anyway we usually try to avoid explosions in our Gold.
 
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Hello,
I have a few questions.
According to specifications i have. Can anyone tell me the real price for it? Not according to London metals exchange.
Or how to evaluate?
And also who can use it or a whom to offer? like institutes or factories, etc....
Someone saying that somehow it used also as a financial instrument....
Everyone is playing "smart", but no real serious answers.
Thanks in advance
p.s.
I understand that is not thousands or hundreds
 

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Yggdrasil said:
I can't see how, Gold is non reactive and Copper almost non reactive.
Anyway we usually try to avoid explosions in our Gold.
Click to expand...
It's due to redox reaction rates. The gold oxide is very unhappy that it exists, and the fine copper power is actually highly reactive when heated.

But, not many people (aside from crazy chemists) want to risk vaporizing thousands of dollars in gold. There are plenty of thermite reactions possible. All it takes is for the less reactive metal to be in the form of an oxide, and the more reactive metal to be in powder form.

Copper oxide and fresh iron filings works too.
 
Please forgive me for how ignorant I'm about to sound, but I swear I'm not a gollum.

I have a client who has access to 430 kg of copper powder that's 99.9994% pure, with sub-40-micron size. He's looking to sell the copper to fund the project I'm consulting on for him, and though he obviously doesn't want to get taken for a ride, he's motivated.

I have a spec sheet from December and would put anyone who's interested in touch with him, and/or with his colleague from whom he acquired the copper.

Given this is not my forte, I'm having a terrible time finding either an interested buyer or a broker of some kind who might actually know what they're doing and could earn a commission by finding a buyer.

I've come to learn that this sounds exactly like a scam, but all I can say is I'll be happy to talk with anyone who can point me in the right direction.

Many thanks in advance!
 
Jonathan Wolfjaw said:
Please forgive me for how ignorant I'm about to sound, but I swear I'm not a gollum.

I have a client who has access to 430 kg of copper powder that's 99.9994% pure, with sub-40-micron size. He's looking to sell the copper to fund the project I'm consulting on for him, and though he obviously doesn't want to get taken for a ride, he's motivated.

I have a spec sheet from December and would put anyone who's interested in touch with him, and/or with his colleague from whom he acquired the copper.

Given this is not my forte, I'm having a terrible time finding either an interested buyer or a broker of some kind who might actually know what they're doing and could earn a commission by finding a buyer.

I've come to learn that this sounds exactly like a scam, but all I can say is I'll be happy to talk with anyone who can point me in the right direction.

Many thanks in advance!
Click to expand...
There is no need for this kind of Copper here.
Plain Copper powder or Slab will do for us.
Additionally all the ones we have had with this kind of product has disappeared as soon as they have been challenged to describe their product.

So what is the price your client is asking?
 
Jonathan Wolfjaw said:
Please forgive me for how ignorant I'm about to sound, but I swear I'm not a gollum.

I have a client who has access to 430 kg of copper powder that's 99.9994% pure, with sub-40-micron size. He's looking to sell the copper to fund the project I'm consulting on for him, and though he obviously doesn't want to get taken for a ride, he's motivated.

I have a spec sheet from December and would put anyone who's interested in touch with him, and/or with his colleague from whom he acquired the copper.

Given this is not my forte, I'm having a terrible time finding either an interested buyer or a broker of some kind who might actually know what they're doing and could earn a commission by finding a buyer.

I've come to learn that this sounds exactly like a scam, but all I can say is I'll be happy to talk with anyone who can point me in the right direction.

Many thanks in advance!
Click to expand...
Aah yes,I forgot.

Welcome to us.

Here is something to study:

We ask our new members to do 3 things.
1. Read C.M. Hokes book on refining jewelers scrap, it gives an easy introduction to the most important chemistry regarding refining.
It is free here on the forum: https://goldrefiningforum.com/phpBB3/viewtopic.php?f=54&t=19798
2. Then read the safety section of the forum: https://goldrefiningforum.com/forums/safety.47/
3. And then read about "Dealing with waste" in the forum: https://goldrefiningforum.com/threads/dealing-with-waste.10539/

Suggested reading:
https://goldrefiningforum.com/forums/the-library.101/
https://goldrefiningforum.com/threads/when-in-doubt-cement-it-out.30236/
https://goldrefiningforum.com/threa...le-read-this-before-you-post-about-ore.33333/


Forum rules is here.
https://goldrefiningforum.com/threads/gold-refining-forum-rules.31182/
 
Yggdrasil said:
There is no need for this kind of Copper here.
Plain Copper powder or Slab will do for us.
Additionally all the ones we have had with this kind of product has disappeared as soon as they have been challenged to describe their product.

So what is the price your client is asking?
Click to expand...
Ah, didn't know that kind of copper isn't useful here. Thank you.

The spec sheet's conclusion is "The particle form is dendritic, and the sizes vary from 0.6 to 2.2 um, elongated particles between 26 and 65 um, in average <40 um."

He's asking ~$20/g for the first 60kg, if that's the most he can get. He'd use that to pay to recondition the rest with the intent of getting more uniformity and hence a higher price.

I'll be happy to share the spec sheet I have. I work in finance so I'm absolutely out of my depth, but I'll answer whatever I can, and if I can't find out from my client or his colleague, I'll at least say so.

But seriously, even if anyone knows of where I can find a metals trader or broker or anyone who knows how to move metal like this, I'd be most appreciative.
 

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kurtak said:
300 (or 325) mesh copper is your best choice when it comes to cementing PGMs --- FAR better then cementing PGMs with a solid bar of copper & an air bubbler

And for what it is worth - when done right - you can cement PMs (gold - silver or PGMs) using copper powder & have your PMs come back very near pure - if not pure

I have successfully cemented PMs from solutions using copper powder & had my PMs come back between 995 & yes even 999

Copper powder in fact does have a place/use in the refining of PMs - this was taught to me by 4metals like 9 years ago which you can read about here ----------

https://goldrefiningforum.com/threads/fuzz-button-interconnects-need-some-advice.22203/#p232030

Ever since 4metals taught me about the use of copper powder in refining I have kept some on hand as another tool in my tool box & in "certain" situations is my preferred method for getting my PMs back from solutions

In fact at one point in time I was going to make my own atomizer in order to make my own copper powder for using in my refining - the only reason I did not make the atomizer for making my own copper powder was that it was about the same time I was deciding to retire from my full time refining

Kurt
Click to expand...
Ive seen Kurt do this first hand. I have to admit I was staggered at the results. Definitely one to keep in your toolkit.
 
Jonathan Wolfjaw said:
Ah, didn't know that kind of copper isn't useful here. Thank you.

The spec sheet's conclusion is "The particle form is dendritic, and the sizes vary from 0.6 to 2.2 um, elongated particles between 26 and 65 um, in average <40 um."

He's asking ~$20/g for the first 60kg, if that's the most he can get. He'd use that to pay to recondition the rest with the intent of getting more uniformity and hence a higher price.

I'll be happy to share the spec sheet I have. I work in finance so I'm absolutely out of my depth, but I'll answer whatever I can, and if I can't find out from my client or his colleague, I'll at least say so.

But seriously, even if anyone knows of where I can find a metals trader or broker or anyone who knows how to move metal like this, I'd be most appreciative.
Click to expand...
hi,
20euro /g is too much, between 2-8 euro/gram. and you should speak to Deutsche bank or similar, or FX traders.... 99,999+% is only as a financial instrument.
spend too much time on that. also, you should provide docs, where it comes from. good luck
 

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