My experience is that average polishing sweeps contain 1/4 oz fine gold
per pound, although mine sometimes contain as high as 1/3 oz per pound.
This of course depends on whether you do any grinding at the polishing
machine, and how much brush work, and the average karat you work with. I
work mainly in 18k.
I suggest that you boil your polishing sweeps down in a solution of PURE
LYE in water. For 1 pound of sweeps, use about 4 oz of lye, you may need
to do it twice. then rinse by letting the product stand it water until
the water goes clear. You can then torch melt the product and get all of
your gold into an ingot. NOTE: use a glass or stainless pot, NOT
ALUMINUM, and use adequate ventilation. We upped our returns over 30% by
sending gold ingots to the refiner… make your own conclusions…
Can anyone tell me about how much pure gold is in 1 pound of
Handmade 18K, 22K, and platinum gemstone fine jewelry.
Diamond setting, rubber/metal molds, casting, lapidary
Die and mold engraving, plastic patterns for casting.
Cad jewelry design, cad/cam milling scroll filigree…
P O Box 2057 Fairfield IA 52556 515-469-6250