Silicon Carbide Graphite Crucible for Gold Melting and Casting

Silicon Carbide Graphite (SiC-Graphite) crucibles are advanced composite ceramics engineered for high-temperature melting of precious metals (especially gold, silver, platinum). They combine silicon carbide (SiC) and graphite via processes like isostatic pressing and high-temperature sintering, creating a material that overcomes the limitations of pure graphite or SiC crucibles.

• Composition:

  • Silicon carbide (SiC): Provides hardness, strength, and thermal stability.

  • Graphite: Ensures thermal conductivity and shock resistance.

  • Minor additives (e.g., binders, anti-oxidants) enhance performance.

• Design Purpose:

  • Balances SiC’s extreme durability with graphite’s heat transfer efficiency.

  • Solves graphite’s softness/oxidation issues and pure SiC’s brittleness.

• Appearance: Dense, dark gray/black, smooth surface.

• Material: Advanced composite of Silicon Carbide (SiC) and Graphite.

• Manufacturing Process: Hot Isostatic Pressing (HIP) - Ensures maximum density, uniformity, and strength.

• Structure: Isotropic, ultra-dense, pore-free microstructure.

• Surface: Hard, oxidation-resistant SiC-rich layer.

• Primary Application: Optimized for melting and holding pure Silver (Ag) and Silver alloys.

They can be used for resistance furnace, induction furnace, biological particles furnace, gas furnace, coke oven, furnace oil, and gas furnace to melt gold, silver, copper, aluminum, tin, lead, zinc and other nonferrous metals, and various non-ferrous alloys.

• Bullion Production: High-yield melting of 1-100kg silver bars.

• Jewelry Casting: Contamination-free melting for investment casting.

• Silver Recycling: Corrosion resistance against metallic impurities (Cu, Zn, Pb).

• Continuous Operations: 24/7 furnace compatibility with minimal degradation.

Qingdao Baidun Special Ceramics Technology Co., LTD.(Qingdao Baidun) is located in the SCO Demonstration Area,Qinadao,China, Qinadao Baidun and it's subsidiaries specializes in the manufacture of crucibles for non-ferrous metal smelting, refractory products for continuous casting and alumina grinding ball. lt has a registered capital of 100milion RMB and covers an area of 100,000㎡. Qinadao Baidun has two brands, "Baidun"and "J&J" .which are respectively for Chinese and overseas markets, Qingdao Baidun is one of the largest crucible manufacturers in China that uses isostatic pressing technology to produce silicon carbide graphite crucibles and clay graphite crucibles. With many years ofresearch and field tests, the technical team of Qinadao Baidun has made sianificant efforts tosolve various technical problems and developed silicon carbide graphite crucibles and clay graphite crucibles which have characteristics of high oxidation resistance,high thermal conductivity, long service life, and low energy consumption, increasing production efficiency and significantly reducing production costs for non-ferrous metal smelting companies, Third-party professional institutions have selected Qinadao Baidun as the champion crucible brandin Chinese die-casting industry for many years since 2016.

J&J/Baidun Crucible is a top-quality product made in China, known for its high temperature resistance, chemical resistance, and durability. Composed of high pure materials such as SiC and clay, this crucible is designed for laboratory applications requiring reliable performance under extreme conditions.

Packing: Use professional export packaging, wooden box or wooden box packaging, cardboard, carton, ton bag, or packaging according to customer requirements.

Delivery time: 10-45 days after confirming the order, the specific delivery date should be determined according to the and order quantity.