Hopefully you are able to help answer an unusual question, or
perhaps point me in the right direction.
I have a client that is in the process of opening a "smelting"
division within his jewelry business, and the city council is asking
for some specific regarding the fumes created. My client
is looking at increasing his scrap jewelry buying, and is simply
melting the gold down into Dore bars using a gas torch for ease of
shipping and assay purposes.
The City Council is concerned about the fumes created during this
"smelting" process, and is looking for research regarding the
toxicity levels of these fumes. I am under the impression that a
majority of the fumes consist of dirt, oil, skin, and perhaps some
zinc, nickel and copper but that is almost negligible.
There will be No acids, No chemicals, just torch melting and a pour
into dore bars. He has all the proper vents, and scrubbers in place,
but the city wants specifics on the fumes before and after they
vented into the air.
Do any of you have (or know any links) to literature, research, etc.
regarding the chemical breakdown of what the fumes consist of? And
the toxicity levels of these fume?
Any help would be greatly appreciated.
Miguel A. Rosas