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cupellation

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1
cupellation
cupellation (kjuːpəˈleɪʃən) Also 8 copp-, cupp-. [f. cupel v. + -ation, after F. coupellation.] The process of assaying or refining the precious metals in a cupel; the separation of silver from argentiferous lead, on a large scale, on a cupel.a 1691 [see cupelling b]. 1750 Phil. Trans. XLVI. 586 Tha... Oxford English Dictionary
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Cupellation
Cupellation is still in use today. Process Large-scale cupellation Native silver is a rare element. Small-scale cupellation Small-scale cupellation is based on the same principle as the one done in a cupellation hearth; the main difference lies in the wikipedia.org
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coppell
▪ I. coppell var. of copple, Obs.▪ II. coppell, -ation obs. f. cupel, cupellation. Oxford English Dictionary
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Cupel
Cupel may refer to: A porous pot used in cupellation Cupel, Białobrzegi County in Masovian Voivodeship (east-central Poland) Cupel, Legionowo County in wikipedia.org
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decupelation
† decupeˈlation Obs.—0 [cf. cupel, cupellation.] ‘The same as Decantation.’1706 in Phillips (ed. Kersey); hence 1721 in Bailey, etc. Oxford English Dictionary
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Refining (metallurgy)
Lead Cupellation One ancient process for extracting the silver from lead was cupellation. limited by the lead-silver eutectic and typically the process stopped around 600 to 700 ounces per ton (approx 2%), so further separation is carried out by cupellation wikipedia.org
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cupelling
cupelling, vbl. n. (ˈkjuːpəlɪŋ) [f. cupel v. + -ing1.] = cupellation.1644 Digby Nat. Bodies x. (1657) 102 In the coppelling of a fixed metal. a 1691 Boyle Wks. III. 453 (R.) The quick melting down of ores, and cupelling of them. b. attrib. and Comb., as cupelling-fire, cupelling-furnace.a 1691 Boyle... Oxford English Dictionary
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Arisman
First, the ore was smelted, and then the second step of cupellation was used to separate arsenical copper and silver. wikipedia.org
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cupel
▪ I. cupel, n. (ˈkjuːpəl) Also 7–8 coppel, cuppel, (7 copel(l, coppell, -ill, -le). [a. F. coupelle (15th c.), med.L. cūpella, dim. of cūpa cask, to which the current form is adjusted.] 1. A small flat circular porous vessel, with a shallow depression in the middle, made of pounded bone-ash pressed ... Oxford English Dictionary
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Spiegeleisen
mixing iron ores with appropriate levels of manganese and smelting them directly, or by adding pyrolusite or manganite to previously smelted iron in a cupellation wikipedia.org
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تنقية الفلزات
التنقية البوتقية Cupellation في تنقية الرصاص. اقرأ أيضاً علم الفلزات المراجع عمليات تعدينية wikipedia.org
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De re metallica
Large scale cupellation using a cupellation hearth is also covered in this book. The lead and silver can be separated by cupellation. wikipedia.org
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댐통령 on Twitter: "RT @JeffreyKotyk: The word for lead oxide in Classical ...
RT @JeffreyKotyk: The word for lead oxide in Classical Chinese is a loanword from Mid.Persian (密陀僧 = murdār-sa[n]g). Reading the old Chinese treatises on alchemy, I'm wondering if the technology for cupellation, where they extracted silver and gold from argentiferous lead, wasn't also foreign. 09 Dec 2022 13:12:43
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Non-ferrous extractive metallurgy
The silver-lead cupellation method was first used in Mesopotamia between 4000 and 3500 BC. Early to late Anglo-Saxon cupellation Cupellation was also being used in parts of Europe to extract gold, silver, zinc, and tin by the late ninth to tenth wikipedia.org
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Bottom-blown oxygen converter
Prior to the development of the BBOC, BRM used cupellation in a 15 tonne (“t”) reverberatory cupellation furnace to recover the precious metals from this The cupellation process finishes when the silver is about 99.7% pure. wikipedia.org
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