हाडांच्या राखेपासून बनविलेले एक लहान वाडगा उदा. मौल्यवान धातू वेगळे करण्यासाठी वापरले जाते,

cupel's Usage Examples:

600 to 700 ounces per ton), so further separation is carried out by cupellation.

One ancient process for extracting the silver from lead was cupellation.

The older and relatively simple method of cupellation can then be used to separate the silver from the lead.

This process is known as cupellation.

applied to ores, concentrates, or less pure metals, adds a fusion or scorification step before cupellation.

The precious metals remain in the base of the cupel as a "prill" which is sent for final.

As applied to gold bearing metallics, as in hallmark assaying, it is also known as cupellation and can have an accuracy.

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 situation changed with the discovery of cupellation, a technique that allowed silver metal to be extracted from its ores.

production of silver requires the smelting and then cupellation of argentiferous lead ores.

scorifier which is similar to a cupel but slightly larger and removes the lead and leaves the noble metals behind.

The word derives, via Italian, from lower Latin cupula (classical Latin cupella from Greek.

Cupellation: the lead bullets are placed in porous crucibles (cupels) of bone ash or magnesium oxide and heated in air to about 1000 °C.