Abstract
The cleanest kinds of precious metal scrap are old jewelry, metal parts of old dentures, and the dust and bits produced in the manufacture of jewelry or dentures. Old jewelry may be made of sterling1 silver, carat2 gold (alloyed gold), or of base metals plated with gold. Dentists often use high-quality gold, platinum, or alloys of gold with platinum, silver, and/or copper.
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Embleton, F. T. 1981. A new gold refining facility. Gold Bull. 14 (2): 65–68.
Loewen, R. 1980. Small scale gold refining. Technical report No 44/1. London: The Worshipful Company of Goldsmiths.
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© 1991 Van Nostrand Reinhold
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Yannopoulos, J.C. (1991). Recovery of Secondary Gold. In: The Extractive Metallurgy of Gold. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-8425-0_7
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DOI: https://doi.org/10.1007/978-1-4684-8425-0_7
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-8427-4
Online ISBN: 978-1-4684-8425-0
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