Cupellation Furnace manufactured by United Enterprises is a specialty high-temperature furnace built for cupellation the final stage of fire assay where the lead button is oxidised away on a porous cupel, leaving a precious-metal bead.
Brief Description:
We manufacture and export best-in-class Cupellation Furnaces, used in fire assay laboratories. The cupellation process is carried out at 950C1000C in air lead oxidises into PbO, which is absorbed by the porous cupel, leaving behind a bead of gold, silver or platinum group metals.
Our Cupellation Furnaces use SiC heating elements, multilayer refractory insulation and microprocessor-based temperature controllers. Air is supplied through engineered openings for efficient lead oxidation.
Each unit is engineered around the customers daily sample volume and assay standards.
Characteristics:
About United Enterprises:
United Enterprises is over 25+ years experienced Cupellation Furnace manufacturer in India. We design, manufacture, supply, export and commission tailor-made Cupellation Furnaces across Asia and Europe. Established in 1998, we are an established manufacturer and exporter in India, supplying refineries, hallmarking centres, jewellery industries and mining labs all under CE and ISO standards.
FAQs:
Q: Cupellation temperature what is typical?
A: 950C1000C in air. Too low slows the process; too high may cause silver loss.
Q: Do you supply with fire assay furnaces?
A: Yes. Matching fire assay furnaces are offered as part of a complete fire assay lab.
Q: Lead, silver, gold beads how accurate is the analysis?
A: With well-controlled cupellation and accurate weighing, fire assay is the recognised gold standard for precious-metal analysis.






Price:
Price 5000000.0 INR / Piece
Minimum Order Quantity : 1 Piece
Power : 1530 kW
Type : Batch Type Furnace
Weight : 25006000 Kg
Rating : Industrial Grade
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Minimum Order Quantity : 1 Unit
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Weight : Approx. 120 kg
Rating : High Efficiency
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Minimum Order Quantity : 1 Piece
Power : 25200 kW (customized)
Type : Pyrolysis Furnace
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Price 1500000.0 INR / Piece
Minimum Order Quantity : 1 Piece
Power : Up to 100 kW
Type : Electric Resistance Heating Furnace
Weight : Variable (Depends on model)
Rating : High Efficiency