Qingdao Decent Group Cupellation Furnace is a kind of fire assay equipment used to detect the content of precious metals, also known as muffle furnace. The heating element of the cupellation furnace adopts silicon carbide heaters, and the furnace adopts refractory materials with silicon carbide as the main element. The maximum temperature can reach 1200. PID temperature control system can realize temperature indication and precise regulation. The modular design of the cupellation furnace chamber is convenient for maintenance and replacement of parts.
Supply a variety of cupellation furnaces for fire assay laboratories
Qingdao Decent Group 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.
Key Advantage:
• Industrial standard, take 50/100 cupels at one time
• Easy to maintain and operate
• Heat up fast, furnace chamber temperature uniform and stable
• Simple replacement of consumables
• Electronic component leakage protection
• Pneumatic door vertical lifting by foot pedal
Equipment Structure:
• 2mm carbon steel frame is integrally formed, and the outer surface is electrostatically painted
• The door panel is attached with aluminum silicate refractory cotton, and the chamber is made of high-quality thermal insulation refractory bricks and refractory thermal insulation fiber cotton
• Using high-quality silicon carbide element heating, long life
• Independent furnace muffle and plate, easy to replace
• Electric heating method, an air compressor is required
Temperature Control:
• Type K thermocouple
• Electronic automatic temperature control, up to 1200°C
• High temperature alarm output
• Fitted with over temperature controller
[ 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
• The 50 place cupellation furnace can 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.
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