Precision at its Finest: Elevate Your Lab Experiments with Global Lab Supplies
Cupellation Furnace
• Easy to maintain and operate.
• Door panel for easy access to transformer.
• Fast and accurate temperature control ensures consistent and stable temperature.
• Built to industrial standards and compatible with multipour and multiload system.
• Pneumatic rising door operated by food pedal reduces thermal radiation hurt and risk to operator.
Supply a variety of cupellation furnaces for fire assay laboratories
GLS cupellation furnace is a kind of fire assay equipment used to detect the content of gold, silver and precious metals, also known as muffle furnace. As professional laboratory equipment, the industrial standard furnace chamber can be loaded with 50 or 100 cupels. It significantly improves the efficiency of laboratory work and reduces the frequency of manual operations.
The structure of the fire assay cupellation furnace is made of carbon steel as a whole, which is strong and durable. Silicon carbon heating elements, K-type thermocouple and Omron temperature controller make the furnace temperature can be adjusted precisely, and the furnace temperature is uniform and stable. The maximum temperature of the furnace can reach 1200 ℃. These conditions provide reliable results for the operation of absorbing lead buttons to obtain gold silver alloys in the cupellation process.
[ Various Options ]
- Optional equipment such as fire assay tools, manual/electric crucible loader, etc. can be used to form integrated systems of multi-pour loading, unloading and cupellation.
• Optional laboratory dust removal system and acid fume scrubber
• The50 place cupellation furnacecan be connected with a 25 place laboratory crucible fusion furnace
• Safety goggles, aluminized heat-insulating protective clothing, and aluminized protective gloves must be worn during the whole process of the cupellation
• Fire assay cupellation furnace can be customized according to customer needs
[ How To Cupellation ]
Cupellation is an important step to separate precious metals from lead in lead alloys. First, the cupels are preheated in the fire assay cupellation furnace at 800-900 ℃ to remove the organic matter, moisture, carbon dioxide and other volatile substances. Then put the lead button into the preheated cupels. After the lead button is melted in the cupellation furnace, the lead is oxidized into lead oxide and penetrates into the porous cupels. Thereby removing the lead and base metal from the lead button. Gold, silver and precious metals are not oxidized and kept in the cupels to form gold and silver particles.
[ Technical Parameters ]
Related Products
Safety Goggles
Safety goggles can provide special eye protection for specific work and environments. Safety goggles are your ideal choice when you need to minimize the risk of liquid splash, corrosive vapor, air dust and solid particles’ high-speed impact. Safety goggles are mainly divided into three types: anti-solid debris, anti-chemical solution and anti-radiation.
High Temperature Muffle Furnace
The maximum temperature of the Muffle Furnace 100 places muffle furnace can be adjusted up to 1500°C. The heating speed is very fast by silicon-molybdenum elements. On the lifting door of the high-temperature muffle furnace, there is also an observation window for watching the cupellation of lead buttons. Observation windows are equipped with fire-resistant glass, which can protect personnel from high-temperature radiation.
Zirconium Crucibles [straight wall]
Zirconium is our most effective crucible material for fusions using sodium carbonate or sodium peroxide. It is an excellent low-cost replacement for platinum. And, based on an average of 100 fusions per crucible, it is more cost effective than less expensive porcelain or steel crucibles.
Other advantages of zirconium are its complete resistance to the action of most solvents of all concentrations such as nitric, hydrochloric, sulfuric and perchloric acids.
This allows the fusions to be dissolved out of the crucible completely with little or no contamination of the sample. Alkaline solvents such as ammonium hydroxide, acetate sulfide, carbonate and (Na, K) hydroxide, sulfide, carbonate and cyanide are also without effect.
Pulverizing Bowls
Pulverizing bowl: also called pulverising mill grinding bowl, pulverizer mill bowl. It is a grinder that grinds coarse material into fine powder. When working, put the grinding bowl into the laboratory sample pulverizer or vibration grinder card slot. The motor drives the grinding bowl to eccentrically vibrate. After 2-6 minutes of work, the material can reach 80-300 mesh for testing.
Manual Pot Loader
• 25 place/50 place one-time pots loading capacity, saving time and increase efficiency.
• Easy to operate with pedal and handle to realize lifting and pots placing action.
• High-intensity steering wheel with brakes, safe and stable, easy to move.
• Customized loading capacity to meets client’s needs.
