This is my first appearence here in the forum, so I will present
myself first. My name is Jose Girao and Im a curious in all art
subjects, in particular in jewlry, because of my grand grand
father wich worked for many years in Oporto here in Portugal
were I am. My question is, anyone knows the chemical process
based in acids and stuff to remove from saw dust, precious
metals and how to separate them like gold here, silver
there…, because the process used by my parent is very old
and based in mercury wich is very unfriendly to nature.
Thanking in advance for your help and support, best regards,
There are home refining systems available from companies like
Rio Grande and Gesswein that I have heard good reports about.
Perhaps the list has expereince and can comment. The Worshipful
Company of Goldsmiths, Carey Lane, London, England has some books
Loewen, Roland. The Recovery of Gold From Jewellery Sweeps. The
Worshipful Company of Goldsmiths Project Report No. 44/2. London:
Worshipful Company of Goldsmiths, 1982.
—. Small Scale Gold Refining. Worshipful Company of Goldsmiths Project
Report No. 44/1. London: Worshipful Company of Goldsmiths, 1980.
—. Small Scale Silver Refining. Worshipful Company of Goldsmiths Design
and Technology Committee Report No. 53. London: Worshipful Company of
Box 1624, Ste M, Calgary, Alberta, T2P 2L7, Canada
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