High-Absorption Cupels for Precious Metal Fire Assay
Porous magnesia-based cupels engineered for efficient absorption of lead oxide during cupellation.
Key benefits of our Fire Assay Cupels
Easy Maintenance
Smooth surface finish prevents sample adhesion and enables quick cleaning. Dishwasher safe for convenient sanitation between sample batches.
Engineered for safety
Our classifiers are engineered to global safety standards and incorporates rated lifting points or to lift the entire unit.
Optimized Airflow
Perforated design allows unrestricted air circulation around samples, ensuring uniform heat distribution and consistent drying results across all sample positions.
Rapid Drying Technology
Infrared heating provides up to 50% faster drying times compared to conventional convection ovens, increasing laboratory throughput.
Cost-effectively boost productivity
Combining a conventional fluidised bed separator with a set of parallel inclined plates that form lamella channels increases unit capacity.
Essential for Cupellation Process
Cupels absorb oxidized lead (litharge) during high-temperature cupellation, leaving a clean precious metal bead.
High Porosity & Strength
Optimized pore structure ensures effective litharge absorption while maintaining mechanical stability.
Consistent Precious Metal Recovery
Supports reliable gold and silver assay results in mining laboratories.
Applications for our Fire Assay Cupels
Discover how our Fire Assay Cupels can be used in various industries and applications.
Industrial Projects
Comprehensive solutions for large-scale industrial projects and operations
Remote & Harsh Environments
Designed to perform in extreme conditions and remote locations
Mining & Exploration
Reliable solutions for mining and exploration operations in challenging environments
Frequently asked questions
FAQs for the Fire Assay Cupels
What is Fire Assay and why is it used?
Fire Assay is a highly accurate laboratory method used to determine the precious metal content in ores, concentrates, and geological samples. The process uses high temperatures to separate gold, silver, platinum group metals, and other valuable elements from surrounding material. Because of its precision and reliability, Fire Assay is considered the industry standard for precious metal analysis worldwide.
How does the Fire Assay process work?
The sample is first mixed with special fluxes and heated in a furnace at very high temperatures. During melting, precious metals collect into a lead or nickel button while unwanted material forms slag. The metal button is then separated and further refined to accurately measure the precious metal content. This process delivers highly reliable results, even at very low concentrations.