Gold Refining and Parting
Gold parting is primarily the removing of silver from gold and therefore increasing the purity of gold. The parting of gold from silver has been done since ancient times starting in Lydia in the 6th century BC. Various techniques have been practised; salt cementation from ancient times, parting using distilled mineral acids from medieval times, and in modern times using chlorination using the Miller process and electrolysis using the Wohlwill process.
Read more about this topic: Gold Extraction
Famous quotes containing the words gold, refining and/or parting:
“The enquiring fields, courtesies
And tribulations of the air
Be still and give them peace:
The girl in the gold hair
With her young man in clover
In shadow of the day’s glare ...”
—Allen Tate (1899–1979)
“Artistic growth is, more than it is anything else, a refining of the sense of truthfulness. The stupid believe that to be truthful is easy; only the artist, the great artist, knows how difficult it is.”
—Willa Cather (1876–1947)
“My Christian friends, in bonds of love, whose hearts in sweetest union join,
Your friendship’s like a drawing band, yet we must take the parting hand.
Your company’s sweet, your union dear; Your words delightful to my ear,
Yet when I see that we must part, You draw like cords around my heart.”
—John Blain (18th century)