cupel in English
On cooling, the prill is carefully extracted from the cupel .
The product is then cupelled to increase the dross to the range of about 50-65% by weight bismuth.
Use "cupel" in a sentence
1. Cupellation The lead buttons are placed into a cupel
2. As Cupellation proceeds and the lead button becomes smaller, the feathers that were initally depositing on the edge of the cupel, start depositing in concentrical rings within the cupel
3. Real Bone Ash Cupels, assay mining old school pure CRUCIBLE - ONE CUPEL
4. Lot of 8 - # 8AM Mabor Cupel 1-3/4" Gold-Assay-Smelting-Refining-Melting-Cupels
5. Verb cupels, cupelling, cupelled; US Cupeling, cupeled [with object] Assay or refine (a metal) in a cupel
6. Transitive verb cupels, Cupeling, cupeled, cupelling, cupelled [with object] Assay or refine (a metal) in a cupel
7. Magnesite Cupels are used for cupellation as magnesite cupel in fire assay, which can resist high temperatures involved in the process
8. Cupellation is the process of recovering precious metals from lead by melting the alloy in a cupel and oxidizing the lead by means of an air blast
9. Mose Cupels absorb about 70% of their weight in lead so weigh your buttons first and use the closest size cupel you have on hand.
10. Metallurgical ContentWhat Effect Base Metals have on CupellationMetal Losses in CupellationBone AshExamination of the Cupel Cupellation is conducted in a muffle furnace, the construction of which is shown in Figs
11. Cupels Bone Ash Cupels Premium Bone Ash Cupels MgO Cupels Roasting Dishes Round Rectangle Scorifiers Bone Ash Tools Annealing Cup Tools Button Tools Crucible Tools Cupel Tools Marking Crayons Furnace Tools Furnace Parts 802 Furnace Parts 810/812 Furnace Parts 815 Furnace Parts Lab Reagents Discontinued Items SDS Brochures
12. Definition of Cupellation : refinement (as of gold or silver) in a cupel by exposure to high temperature in a blast of air by which the unwanted metals are oxidized First Known Use of Cupellation circa 1691, in the meaning defined above
13. Cupels Bone Ash Cupels Premium Bone Ash Cupels MgO Cupels Roasting Dishes Round Rectangle Scorifiers Bone Ash Tools Annealing Cup Tools Button Tools Crucible Tools Cupel Tools Marking Crayons Furnace Tools Furnace Parts 802 Furnace Parts 810/812 Furnace Parts 815 Furnace Parts Lab Reagents Discontinued Items SDS Brochures
14. Cupellation, separation of gold or silver from impurities by melting the impure metal in a cupel (a flat, porous dish made of a refractory, or high-temperature-resistant, material) and then directing a blast of hot air on it in a special furnace.
15. During Cupellation, lead and other base metals are converted into molten oxides, which are absorbed by the cupel, whereas the noble metals remain on its surface as “beads.” In metallurgy, Cupellation is the operation of separating noble metals from argentiferous lead; it is carried out in reverberatory furnaces at a temperature of about
16. During Cupellation, lead and other base metals are converted into molten oxides, which are absorbed by the cupel, whereas the noble metals remain on its surface as “beads.” In metallurgy, Cupellation is the operation of separating noble metals from argentiferous lead; it is carried out in reverberatory furnaces at a temperature of about
17. ‘In Cupellation the lead button is again heated in a furnace at 960°C to 1000°C, but this time in a bone ash cup or cupel.’ ‘No doubt the high silver content of Mendip lead was an important factor in its early exploitation, but we have no means of assessing either the total output of lead or of the amount of silver extracted from it by Cupellation.’