Bone-ash Cup (Noun)
Meaning
A small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead.
Classification
Nouns denoting man-made objects.
Examples
- The assayer carefully poured the molten metal mixture into the bone-ash cup, allowing the lead to be absorbed and the precious metals to be extracted.
- To separate the gold from the lead, the metallurgist used a bone-ash cup, which was specially designed for this purpose.
- After heating the metal sample in the furnace, the assayer transferred it to a bone-ash cup to begin the process of separating the valuable metals.
- The bone-ash cup was an essential tool in the assaying process, as it allowed the lab technician to isolate the small quantities of precious metals present in the ore.
- The use of a bone-ash cup in assaying was crucial in determining the purity of the metal, as it enabled the separation of impurities like lead from the desired precious metals.