jewelerdave said:
Platinum is not smelted but chemically removed and dissolved. then collected, Temp does not matter when dealing with concentrate as when you remove the metals from your solution you heat it then.
the temp does not matter when melting precipitates. Why would one try to smelt platinum from ore?
you dont smelt it, you leach it.
Dave, my presentation was rather poor and I'd better admit it.
I was actively involved in mining in the ca desert and vicinity for a number of years.
Most the gold recovery was accomplished with free running gold.
There were a number of significant operations using chemical process, but they eventually came under so much flak from govt agencies it became untenable to continue operations.
A particular operation I became acquainted with had an interest in a very large amount of slag left behind as tailings from a WWII copper mining operation. Gold was left behind, and there was a significant amount of platinum within the samples. The problem was that the slag was extremely hard, and the chunks would have eaten up milling machinery.
They felt the gold values were substantial and were vigorously searching for a technique to recover it.
The platinum would most likely have gone as scrap because it is so hard to work with.
The same people also had a large amount of military scrap. Jet engine components with a hi degree of platinum composition that would be recovered by smelting.
As a jeweler, you probably know far better than I that it takes a significantly higher level of heat to work with platinum.
All this can be done on a hobby scale, without regard for profit.
Dumping a bundle of money on a project may be valuable for educational reasons but it's different if attempting to keep biscuits on the table.
Discovery of a small concentration of platinum is pretty much along the lines of finding low-grade uranium with a geiger counter. Sure, it's here and there, perhaps in abundance. But it must be in very large quantities to make economic recovery feasible.
Thanks for taking note of my post.
Dave, if I'm incorrect or have been misled, I always appreciate an education.
Please describe effective platinum recovery methods for a small time operator...
You know, something that would meet the "prudent man" qualifier at minimum.
Thanks!
R M P T R