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Interesting read! http://www.levity.com/alchemy/nelson2_7.html
goldsilverpro said:kuma,
Since we are in the business of keeping our members healthy and long-lived, evaporating mercury with a torch would be the epitome of stupidity. Also, the material itself would then be contaminated with mercury, especially, I would think, in areas where the mercury contacted copper. There are much safer methods outlined on this forum.
Just because something might work, that doesn't mean it would be sensible to do it.
In this instance, it's important for you to understand that when you propose a hare-brained idea, there's no shortage of idiots that take it to heart, especially when it alludes to a simple way to extract or refine gold. We fight a steady flow of misinformed people on this forum, some of whom have paid good money for misinformation that isn't in their best interest. Armed with that idea, expect to be called out if you post anything moronic. That's what we do here.kuma said:Please don't assume , that just because I have asked about whether or not a procedure is likely to work , that I am going to pop off and try it.
True, most likely, with you, but do consider what I said, above. Those of us that moderate have a responsibility to ensure that readers aren't fed information that is misleading, especially if it offers risk. And, while we're at it, try to understand that there are those that refuse to come to terms with legitimate information, in particular if it's against that which they prefer to believe. A good example, although not related to refining, is smoking. Those that have no desire to quit often also refuse to acknowledge the connection between smoking and a huge number of health risks, not the least of which is cancer.I have watched many fascinating documentaries about nuclear weapons , this doesn't mean that I'm on the look out for plutonium.
Nothing wrong with learning, but, again, we must be careful to not put in print anything that can be remotely considered as guidance. Anyone looking for the easy way out will generally ignore sound advice and take advantage of concepts that make a task seem easy. A good example of that is the huge number of people that hope to refine gold from e scrap using aqua regia, without addressing the base metals first. We face that problem daily---with some copping an attitude because they read it online.It means that I'm interested in the science behind it.
Mercury, like most liquid metals, is a solvent of other metals. Gold is dissolved in mercury, until the mercury gets saturated. Whether you could recover gold by that process may or may not work, but it's important to understand that gold that has been exposed to mercury is not unchanged.dirtdiggaler said:The mercury has an affinity for the gold, I do not believe (but I could be wrong) that the mercury would remove the gold from plated components because it is not free gold.
This is what I have read and been taught. Solvent extraction is when you transfer certain ionic species in an aqueous solution to an organic solvent and I did not know that "liquid metals are a solvent of other metals" very interesting.Harold_V said:Mercury, like most liquid metals, is a solvent of other metals. Gold is dissolved in mercury, until the mercury gets saturated. Whether you could recover gold by that process may or may not work, but it's important to understand that gold that has been exposed to mercury is not unchanged.dirtdiggaler said:The mercury has an affinity for the gold, I do not believe (but I could be wrong) that the mercury would remove the gold from plated components because it is not free gold.
Solder used in wave soldering machines slowly gets contaminated with gold, yet the solder is well below the melting point of gold. Again, a case where a liquid dissolves a solid.
Harold
I'm inclined to disagree with that. If it was true that mercury did not dissolve gold and silver, dental amalgam wouldn't work as it does. It is also well known that covering a gold ring with mercury destroys the ring. It may be that it dissolves one of the alloying agents, however, which might also explain why dental amalgam works as it does. It contains some copper, along with silver.dirtdiggaler said:This is what I have read and been taught. Solvent extraction is when you transfer certain ionic species in an aqueous solution to an organic solvent and I did not know that "liquid metals are a solvent of other metals" very interesting.
(Gold and silver are not soluble in mercury, as stated in most texts. The gold and silver simply combine with mercury to form a pasty mixture.
I think you may have misunderstood what I said. I'm of the opinion that the gold is changed when in contact with mercury, evidenced by the destruction of alloyed gold jewelry. Again, that may be due to the removal of copper, although I don't know that it is.It is like the relationship of diamonds and grease: Diamonds have an affinity for grease and are collected on greased plates C.W Ammen). As you stated, the gold is unchanged. Does that mean The amalgam is a mixture - not a compound.
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