CUPELLATION LABORATORY (FIRE ASSAYING)

The cupellation or fire assay method, classified under the norm UNI ISO 11426:2000, is an old and well known analytical methodology utilized for the determination of precious metals concentration.

The cupellation laboratory (fire assaying) consists of the following machines:

Bench drill for sample taking
Analytical balance for sample weighing with anti-vibration table
Working bench for cupels treatment with rolling mill and annealing system
Cupellation furnace with cartridge filter unit for removal of lead oxides
Separation hood (parting hood) with fume scrubber

Cuppellation furnaces

Cupellation furnces (fire assaying):


Model	BT-CF-01	BT-CF-02
Type of heating	Kanthal resistors	Silicon carbide rods
Internal dimensions (muffle)	115 x 240 x 70 H	170 x 230 x 75 H
Power supply	220 V 50 Hz single phase	380 V – 50 Hz three phase
Power	2,5 kW	6,5 kW
Dimensions [mm]	400 x 650 x 750 H	550 x 700 x 1.700 H

Spare parts for cupellation furnace, they are always available in stock for any maintenance requirements:

Resistors for BT-CF-01
Carborundum muffle for BT-CF-01
Silite rods for BT-CF-02
Carborundum muffle for BT-CF-02
Thermocouples

Consumables for cupellation furnaces always available in stock to meet the various operational requirements:

Magnesite cups
Annealing crucibles
Lead foil 0.1 x 70 mm

Separation hoods (parting hoods)

Chemical hoods for running the processo for separation of metals inside the sample.


Model	BT-SH-06	BT-SH-12	BT-SH-20
Assaying method	Single assay in kjeldahl flasks		Multiple assays in quartzglass cell
Number of sample per batch	6	12	20
Power supply	220 V 50 Hz single phase
Power	1 kW	2 kW	3,7 kW
Dimensions [mm]	750 x 800 x 1600 H	1500 x 800 x 1600 H	750 x 800 x 1600 H