In the world of metallurgy and precious metal refining, cupellation is one of the oldest and most reliable analytical techniques for determining the gold and silver content. At the heart of this process is a fundamental piece of equipment: the cupellation furnace, a device designed to ensure high temperatures, thermal stability, and absolute precision throughout the analysis cycle.
The principle of cupellation is based on melting a metal alloy in the presence of an oxidizing agent inside a cupel, which is a small porous container made from refractory materials. During melting, non-noble metals are oxidized and absorbed by the cupel itself, while gold and silver—resistant to oxidation—remain as solid residues. For this to happen correctly, the furnace must provide controlled and uniform heating, maintaining a constant temperature around 1,100°C.
On our website, we offer various types of cupellation furnaces, each developed to meet specific laboratory and production needs. Each model is born from extensive technical experience and a thorough study of the real operating conditions these furnaces are subjected to daily.
Our models
Among the available models, the Z-C furnace stands out for its reliability and durability over time. It features a robust structure and high thermal capacity, making it suitable for intensive work cycles. Next to it, the MSC furnace offers more compact and flexible solutions, particularly suitable for laboratories working with medium-small volumes but still requiring process precision. Finally, the FS5-C furnace represents a technological evolution capable of integrating advanced thermal control and safety functions, ideal for environments where reliability and traceability are essential. Additionally, the FS5-C model can reach very high temperatures, heating up to 1300°C.
Each furnace is built with high-quality refractory materials, resistant to thermal shocks and wear typical of high temperatures. The system for fume extraction is designed to optimize the removal of fumes inside the chamber, improving the efficiency of the cupellation process and extending the lifespan of the cupels. The digital temperature control allows you to set the desired working temperature, minimizing waste.
Our cupellation furnaces are used not only in foundries or metallurgical laboratories but also in analysis centers for metal certification and in recovery and refining activities of gold and silver from electronic waste or disused jewelry. In all these fields, process reliability is a critical element, and this is where the build quality and attention to detail of our models make the difference.
If you want to explore technical specifications, available sizes, or evaluate which solution best suits your operational context, we invite you to visit our website. There, you will find a comprehensive overview of our MSC, Z-C, and FS5-C furnaces, detailed technical sheets, and options for direct contact with our technical team.
