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Fire Assay Furnace

Name: Fire Assay Furnace
Brand: UNITED ENTERPRISES
Price: 1000000.0 INR
Availability: InStock

Price 1000000.0 INR/ Unit

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MOQ : 1 Unit

Fire Assay Furnace Specification

Glass Size
Standard Cupel/Crucible Size

Feature
Energy Efficient, Digital Temperature Control, Robust Construction

Rating
High Efficiency

Condition
New

Type
Muffle Furnace

Usage
Industrial Metallurgical Laboratories

Power
4.5 kW

Voltage
220-240 V, 50-60 Hz

Size
Standard or Customized

Dimensions
600 mm x 550 mm x 1000 mm (L x W x H)

Weight
Approx. 120 kg

Application
Gold, Silver, and Other Precious Metals Assay

Fuel Type
Electric

Capacity
Up to 48 Crucibles

Cooling System
Natural Air Cooling

Door Type
Front Loading, Safety Interlocked

Insulation
Double Wall with Ceramic Blanket

Temperature Uniformity
5C

Heating Element
Kanthal A1 Wire

Maximum Temperature
1150C

Warranty Support
On-Site and Remote Assistance

Warm-up Time
Approx. 30 Minutes

Controller Type
PID Digital Temperature Controller

Chamber Material
High Grade Ceramic Fiber

Safety Features
Over-temperature Protection, Door Interlock System

Display
Digital LED Display

Installation
Floor Mounted

About Fire Assay Furnace

Fire Assay Furnace manufactured by United Enterprises is a specialty high-temperature furnace built for fire assay analysis of gold, silver and other precious metals.

Brief Description:

Fire assay is the classical, highly accurate method for determining precious-metal content in ores, concentrates and metallurgical samples. The process involves fusing the sample with fluxes at high temperature, separating precious metals into a lead button, and cupelling the lead button to recover a precious-metal bead.

We manufacture and export best-in-class Fire Assay Furnaces and Cupellation Furnaces, used in mining laboratories, refineries and hallmarking centres. Our Fire Assay Furnaces use SiC heating elements, multilayer refractory insulation and microprocessor-based temperature controllers for fusion at 1000C1200C.

Each unit is engineered around the customers daily sample volume and assay standards.

Characteristics:

Designed for fusion stage of fire assay
Maximum temperature up to 1200C
SiC heating elements
Microprocessor-based PID temperature controller
Multi-zone PLC and SCADA control (on premium models)
Multilayer ceramic fibre / refractory insulation
Compact design for lab installation
Operator-friendly design with safety devices

About United Enterprises:

United Enterprises is over 25+ years experienced Fire Assay Furnace manufacturer in India. We design, manufacture, supply, export and commission tailor-made Fire Assay 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: Fire assay or instrumental analysis?

A: Fire assay remains the most accurate method for gold and silver determination; instrumental methods complement but do not fully replace it.

Q: What is the typical fusion temperature?

A: 1000C1100C for most fire assay fluxes; the exact temperature depends on the flux chemistry.

Q: Do you supply with cupellation furnaces?

A: Yes. Matching cupellation furnaces are offered as part of a complete fire assay lab.

Advanced Thermal Accuracy and Control

Equipped with a PID digital temperature controller and Kanthal A1 wire heating elements, the Fire Assay Furnace delivers consistent and precise heat distribution. Achieving a maximum temperature of 1150C with a uniformity of 5C, it supports repeatable and reliable assay results essential for high-stakes metallurgical analysis.

Superior Safety and Construction

Built with a robust double-wall insulated design and high-grade ceramic fiber, this furnace prioritizes safety thanks to features such as an interlocked front-loading door, over-temperature protection, and a durable, floor-mounted frame. Its advanced insulation and safety mechanisms shield users and maintain optimal operational standards.

Efficiency and Flexibility in Industrial Settings

With a warm-up time of approximately 30 minutes and the ability to accommodate up to 48 crucibles, the Fire Assay Furnace boosts productivity in busy laboratories. It runs on electric power, fits standard or custom requirements, and is ideal for assay processes involving gold, silver, and other precious metals.

FAQ's of Fire Assay Furnace:

Q: How does the Fire Assay Furnace maintain temperature uniformity during assays?

A: The furnace uses high-grade ceramic fiber insulation and Kanthal A1 wire heating elements, managed by a PID digital temperature controller. This combination ensures even heat distribution with a uniformity of 5C throughout the chamber, resulting in consistent assay outcomes.

Q: What safety features are integrated into this furnace for laboratory use?

A: Safety is enhanced through an automatic over-temperature protection system, a door interlock mechanism that prevents accidental opening during operation, and robust double-wall insulation. These features help prevent overheating and protect operators during assay procedures.

Q: When is the Fire Assay Furnace typically used in metallurgical laboratories?

A: It is commonly used during fire assay processes for gold, silver, and other precious metals. Laboratories deploy this furnace for precise melting, cupellation, and analysis, especially when accurate quantification of metal content is critical.

Q: Where should the Fire Assay Furnace be installed for optimal performance?

A: For best results, the furnace should be installed in a well-ventilated, dedicated laboratory space with a flat, stable floor to support its 120 kg weight. Ensure access to 220-240V power supply (50-60Hz) and allow sufficient clearance for safe operation and natural air cooling.

Q: What is the process for operating this muffle furnace for precious metal assays?

A: After placing crucibles or cupels in the chamber, users set the required temperature via the digital LED display and PID controller. The furnace reaches assay temperature in approximately 30 minutes, maintaining accuracy and safety throughout the melt, followed by natural air cooling before sample retrieval.

Q: How does using this furnace benefit metallurgical laboratories?

A: Laboratories benefit from high energy efficiency, fast warm-up times, and reliable temperature control, which enhance productivity and deliver precise assay results. The sturdy construction and comprehensive warranty support further reduce downtime and support long-term operational reliability.

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