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Call us on : Cupellation Furnaces – High-Precision Gold & Silver Refining Solutions
What is a Cupellation Furnace?
A cupellation furnace is a high-temperature refining system used to separate precious metals such as gold, silver, and platinum from base metals through an oxidation process. It is a critical tool in assaying laboratories, bullion refineries, mining operations, and jewelry manufacturing units where accuracy and purity are essential.
High-Performance Cupellation Furnaces for Accurate Assaying
Our cupellation furnaces are engineered to deliver consistent, reliable results for metallurgical testing and precious-metal analysis. Built with advanced heating technology and premium refractory materials, these furnaces reach temperatures up to 1200–1300°C, ensuring complete oxidation and absorption of impurities.
Key Features
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High-Temperature Precision: Stable temperature control for accurate cupellation results.
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Energy-Efficient Design: Low power consumption with maximum heat retention.
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Durable Refractory Chamber: Long-lasting performance under continuous high-temperature use.
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Fast Heating & Cooling Cycles: Increased productivity for assay laboratories.
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User-Friendly Operation: Digital temperature controller and easy sample loading.
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Available in Multiple Capacities: From small lab units to large-scale refining furnaces.
Applications of Cupellation Furnaces
Our furnaces are suitable for a wide range of industries, including:
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Gold and Silver Assaying
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Mining and Metallurgy Testing Labs
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Bullion Refineries
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Hallmarking Centres
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Jewelry Manufacturing Units
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Research and Academic Laboratories
Whether you’re performing fire assay, precious-metal purity testing, or industrial refining, our cupellation furnaces guarantee unmatched efficiency.
Why Choose Our Cupellation Furnaces?
We combine superior engineering with industry-specific expertise to deliver furnaces trusted worldwide.
Benefits
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Accurate precious-metal separation
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Reduced sample loss
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Uniform temperature distribution
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Long operational life
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Compliance with international assay standards
Our cupellation furnace systems help laboratories improve testing accuracy, increase productivity, and maintain consistent results.
Technical Specifications (Typical Models)
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Temperature Range: Up to 1300°C
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Heating Type: Electric
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Element Type: Silicon Carbide / Kanthal
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Controller: PID Digital Temperature Controller
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Construction: Heavy-duty mild steel body with powder coating
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Insulation: High-grade ceramic fiber
(Custom specifications available on request.)
3 products
- Description
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- Review
The Del DSC Electric Muffle Furnace is purpose-built for the goldsmith and precious metal refining industry, ensuring high precision and efficiency in cupellation—the essential process of refining and separating noble metals like gold and silver from base metals.
This advanced furnace features a removable carborundum muffle with a capacity of up to 12 cupels, integrated with a suction hood for effective vapor extraction. It comes equipped with a digital thermoregulator, a durable cupel support shelf, and an optional programmable timer (daily or weekly) for automated on/off operation.
Engineered for consistency, safety, and convenience, the Del DSC is an ideal solution for professional refining and assaying applications.
Key Features
- Removable Carborundum Muffle – Holds up to 12 cupels
- Integrated Suction Hood – Safe and efficient vapor removal
- Digital Thermoregulator – Accurate temperature control
- Optional Timer – For automated daily or weekly operation
- Compact and Durable Design – Built for long-term professional use
Technical Specifications
| Category | Details |
| Electrical Data | |
| Voltage | 230 V (Single-phase) |
| Frequencye | 50–60 Hz |
| Wattage | 2.5 kW |
| Maximum Temperature | 1150°C |
| Oven Chamber Dimensions | |
| Depth | 250 mm |
| Width | 145 mm |
| Height | 100 mm |
| Carborundum Muffle Dimensions | |
| Depth | 230 mm |
| Width | 125 mm |
| Height | 75 mm |
| Overall Furnace Dimensions | |
| Depth | 650 mm |
| Width | 400 mm |
| Height | 750 mm |
| Weight | 65 kg |
Applications
- Gold & silver refining using the cupellation process
- Assaying laboratories for purity analysis
- Jewelry manufacturing
- Industrial precious metal separation
- Description
- Ask a question
- Review
The Del D-C Electric Muffle Furnace is built for professionals in the goldsmith and precious metals industry, delivering high performance for cupellation—the process of refining and separating noble metals like gold and silver from base metals.
It features a removable carborundum muffle (up to 18 cupels capacity), an integrated suction hood for safe vapour removal, and a digital thermoregulator for accurate temperature control. An optional daily/weekly programmable timer allows automated operations, making it efficient, durable, and user-friendly for refining and assaying processes.
Key Features
- Removable Carborundum Muffle for easy handling
- Integrated Suction Hood for safe vapour removal
- Digital Thermoregulator for precision temperature control
- Optional Timer for daily or weekly automatic operations
- Robust & Energy-Efficient Design
Technical Specifications
| Category | Details |
| Electrical Data | |
| Voltage | 230 V (Single-phase) |
| Frequency | 50–60 Hz |
| Wattage | 3.9 kW |
| Maximum Temperature | 1150°C |
| Oven Chamber Dimensions | |
| Depth | 250 mm |
| Width | 210 mm |
| Height | 115 mm |
| Carborundum Muffle Dimensions | |
| Depth | 230 mm |
| Width | 170 mm |
| Height | 75 mm |
| Overall Furnace Dimensions | |
| Depth | 750 mm |
| Width | 485 mm |
| Height | 820 mm |
Applications
- Gold & silver refining (Cupellation process)
- Assaying laboratories
- Jewelry manufacturing units
- Industrial precious metal recovery
- Description
- Ask a question
- Review
The Del DS5-C Silite Rod Electric Furnace is designed for the jewelry and precious metals industry, delivering exceptional efficiency and precision for cupellation—the essential process of refining and separating noble metals such as gold and silver from base metals.
This advanced furnace operates on eight high-quality silite heating rods, ensuring extremely high temperatures, rapid heat-up, and uniform thermal distribution. It includes a removable carborundum muffle that accommodates up to 18 crucibles, integrated with a powerful exhaust hood for safe and efficient vapor removal.
To enhance usability, the furnace comes equipped with a digital thermostat, a sturdy cup rack, and an optional programmable timer (daily or weekly) for automated on/off operations. Built for durability, precision, and operator safety, the Del DS5-C is the ideal choice for professional gold refining and assaying laboratories.
Key Features :
●Eight Silite Rods for high-temperature stability and rapid heating
●Removable Carborundum Muffle holding up to 18 crucibles
●Integrated Exhaust Hood for safe vapor removal
●Digital Thermostat for precise temperature control
●Optional Timer for daily or weekly automation
●Heavy-Duty Construction ensuring long-term reliability
Technical Specifications
| Category | Details |
| Electrical Data | |
| Voltage | 230 V (Single- phase) |
| Frequency | 50–60 Hz |
| Wattage | 6 kW |
| Maximum Temperature | 1300°C |
| Oven Chamber Dimensions | |
| Depth | 230 mm |
| Width | 200 mm |
| Height | 115 mm |
| Carborundum Muffle Dimensions | |
| Depth | 230 mm |
| Width | 170 mm |
| Height | 75 mm |
| Overall Furnace Dimensions | |
| Depth | 860 mm |
| Width | 560 mm |
| Height | 1760 mm |
| Weight | 250 kg |
Applications
● Gold & silver refining through cupellation
● Assaying laboratories for purity analysis
● Jewelry manufacturing units
● Industrial precious metal separation