NACCF - Cupellation Furnaces

5000 INR

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Product Details:

Power Source Electric
Measurement Range Assay Quantities 0.150 gm
Temperature Range Ambient to 1200C
Voltage 220V / 230V / 415V AC (as per order)
Automation Grade Semi-Automatic
Accuracy 5C
Feature Rapid Heating, Uniform Temperature Distribution, Energy Efficient
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NACCF - Cupellation Furnaces Price And Quantity

Minimum Order Quantity 1 Piece
Price 5000 INR

NACCF - Cupellation Furnaces Product Specifications

Weight 85-150 kg (depending on model)
Equipment Materials Mild Steel Body, High Alumina Refractory Bricks
Core Components Heating Elements, High Grade Insulation, Digital Controller
Capacity Upto 36 Cupels per batch
Frequency 50/60 Hz
Model No NACCF
Usage Precious metal analysis, lead cupellation, fire assay laboratory
Feature Rapid Heating, Uniform Temperature Distribution, Energy Efficient
Voltage 220V / 230V / 415V AC (as per order)
Accuracy 5C
Automation Grade Semi-Automatic
Temperature Range Ambient to 1200C
Dimension (L*W*H) 610 x 560 x 610 mm (varies with capacity)
Measurement Range Assay Quantities 0.150 gm
Display Type Digital PID Controller Display
Type Laboratory Cupellation Furnace
Power Source Electric

NACCF - Cupellation Furnaces Trade Information

Supply Ability 5-10 Piece piece Per Month
Delivery Time 6-8 Week

Product Description

The NACCF cupellation furnaces are designed for the cupellation, or fire assay test, of precious metals, which is a standard test method used to determine their purity.

The furnaces meet the Hallmarking requirements specified by the Convention on the Control and Marking of Articles of Precious Metals (known also as Precious Metals Convention, Hallmarking Convention or Vienna Convention).

The test method produces hazardous vapours. When used within a suitable fume management system, the cupellation furnaces are designed to handle the vapours without exposing the operator to these hazards. The design of the cupellation furnace range ensures protection from the corrosive environment which would damage a conventional furnace.

Carbolite also offers a range of smelting/melting furnaces.

Standard Features

1200C maximum operating temperature
Designed for testing using the cupellation method to ISO11426:1999 the standard test method used by the UK Assay Office, a reference quantitative assay method by the International Hallmark Convention
The airflow, controlled by an adjustable valve, is preheated before entering the work chamber
Silicon carbide elements mounted above and below the chamber provide even heating of cupels, have good resistance to thermal shock & offer extended working life at high temperatures
Silicon carbide lined roof and hearth protect the heating elements and resist the corrosive fumes emitted during the cupellation process
Fumes are extracted through an insulated exhaust duct, with a removable container to collect condensed lead
Up & away counterbalanced vertically opening door fitted with observation hole
Element over-temperature protection controller
Fitted with 7 day, 24 hour time-switch

Content may be subject to modifications or corrections

Precision and Efficiency in Fire Assay Laboratories

Engineered for accuracy, the NACCF Cupellation Furnace delivers highly uniform temperature distribution for fire assay and metal analysis. Its digital PID controller ensures precise thermal regulation, while rapid warm-up minimizes downtime. Designed for seamless integration into laboratory workflows, the sturdy mild steel body and high alumina bricks combine longevity with reliable performance.

Advanced Safety and User-Friendly Operation

This furnace puts safety and usability at the forefront. Over-temperature protection, a safety cutoff system, and a lockable, insulated door guard against risks. The built-in fume exhaust ensures a safe working environment, and a digital display makes monitoring temperature easy. With optional forced cooling, users can maximize throughput without compromising safety.

FAQs of NACCF - Cupellation Furnaces:

Q: How does the NACCF Cupellation Furnace maintain temperature accuracy during assays?

A: The NACCF Furnace uses a K-Type thermocouple paired with a digital microprocessor PID controller, providing precise temperature measurement and stability within 5C. The Kanthal A1 spiral wound heating elements and high alumina refractory bricks ensure uniform heat distribution throughout the chamber.

Q: What is the process for operating the NACCF Cupellation Furnace?

A: To operate, load up to 36 cupels in the chamber, securely close the front-loading insulated door, and set your desired temperature on the PID controller. Warm-up to maximum temperature (1150C) takes just 30 minutes. The inbuilt alarm and safety cutoffs safeguard the operation. Use the built-in exhaust to manage any fumes generated.

Q: When should the optional forced cooling system be used?

A: The optional forced cooling system is recommended when quick turnaround between batches is necessary or when processing high assay volumes. It accelerates cooling post-operation, increasing productivity without sacrificing safety.

Q: What advantages does the double-walled ceramic wool insulation provide?

A: Double-walled insulation with ceramic wool significantly reduces heat loss, enhances energy efficiency, and ensures the external furnace surface remains safe to touch. It also supports the furnace in sustaining a stable, high-temperature environment for consistent assay results.

Q: Where can the NACCF Cupellation Furnace be installed?

A: The furnace is designed for laboratory environments such as mining assay labs, precious metal analysis facilities, and research centers. Its compact dimensions and air-cooled design allow for flexible placement on sturdy laboratory benches with adequate ventilation for the built-in chimney exhaust.

Q: How does the built-in fume exhaust system benefit the user?

A: The integrated chimney efficiently removes hazardous fumes generated during cupellation, promoting a safer laboratory atmosphere and helping facilities meet environmental and occupational safety standards.

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