High-Performance Graphite Crucibles for Precious Metal Melting

Boli Technology offers high-purity graphite crucibles engineered for the demanding requirements of precious metal melting, smelting, and casting. Manufactured from premium graphite materials with densities ranging from 1.7 to 1.9 g/cm³, our crucibles provide exceptional thermal stability and contamination-free performance for gold, silver, platinum, and other precious metals.

Superior Material Properties

Our graphite crucibles deliver outstanding performance through a combination of advanced material characteristics:

• Exceptional Thermal Shock Resistance – Withstands rapid heating and cooling cycles without cracking, ensuring reliable operation under extreme temperature fluctuations.

• High-Temperature Capability – Operates reliably at working temperatures up to 1800°C, with the ability to withstand even higher temperatures in vacuum conditions.

• Excellent Thermal Conductivity – Shortens melting time significantly, improving energy efficiency and productivity.

• Low Ash Content – Ash content below 300ppm (available down to 30ppm upon request) ensures precious metals remain uncontaminated during smelting.

• Chemical Stability – Resistant to acid, alkali, and corrosion, with minimal reaction with most metals.

• Smooth Surface Finish – Prevents molten metal from adhering to the crucible wall, reducing material loss and simplifying cleaning.

Technical Specifications

Diverse Applications

Our graphite crucibles are widely used across multiple industries:

• Jewelry Manufacturing – Precision melting and casting of gold, silver, platinum, and alloys.

• Precious Metal Recycling – Smelting and refining of scrap gold, silver, and other precious metals.

• Research Laboratories – High-temperature experiments, metallurgical testing, and material analysis.

• Industrial Casting – Non-ferrous metal melting and casting operations.

• Dental Alloy Processing – Melting of dental alloys and other specialty metals.

Customization & Support

We offer standard sizes ranging from 1kg to 8kg melting capacity, with custom dimensions available upon request. Each crucible is precision-machined to ensure consistent quality and performance. Our team provides expert guidance on proper usage, storage, and maintenance to maximize service life.

Why Choose Boli Technology Graphite Crucibles?

• High-purity materials ensure melt integrity

• Extended service life through superior thermal properties

• Compatible with induction melting furnaces and other heating systems

• Competitive pricing with OEM/ODM capabilities

• Reliable quality backed by rigorous manufacturing standards