High-Purity Graphite Crucible Series (Optional Quartz Sleeve Available)
Our premium graphite crucibles are engineered for the demanding needs of precious metal smelting. Available as a stand-alone crucible or as a reinforced set with an optional quartz sleeve, this product offers professional-grade performance for gold, silver, and copper casting.
💎 Why Choose the Optional Quartz Sleeve?
While our graphite crucibles excel on their own, adding the quartz outer sleeve provides several industrial advantages:
- Extended Lifespan: The quartz sleeve acts as an oxygen barrier, significantly slowing down the oxidation of graphite at high temperatures.
- Enhanced Durability: Provides a secondary layer of protection against mechanical impact and heat loss.
- Superior Insulation: Helps maintain consistent internal temperatures for more stable melting cycles.
- High-Temperature Resilience: Made from industrial-grade quartz with a melting point well above standard smelting requirements.
🔥 Graphite Crucible Core Features
- Extreme Purity: >99.9% carbon content with ash <0.1% to prevent metal contamination.
- Rapid Heating: Excellent thermal conductivity reduces melting time and improves energy efficiency.
- Chemical Resistance: Outstanding stability against strong acids, alkalis, and corrosion.
- Precision Surface: Non-stick interior ensures smooth pouring and minimal precious metal residue.
📊 Size & Specifications
Please select the capacity that fits your furnace requirements:
| Capacity | Inner Dia. | Graphite OD | Quartz OD (Optional) | Height |
|---|---|---|---|---|
| 1 KG | 38 mm | 47 mm | 58 mm | 88 mm |
| 2 KG | 44 mm | 58 mm | 65 mm | 110 mm |
| 3 KG | 50 mm | 65.5 mm | 80.5 mm | 110 mm |
| 4 KG | 60 mm | 75 mm | 85 mm | 130 mm |
| 5 KG | 69 mm | 89 mm | 100 mm | 130 mm |
📦 Selection Options:
- Crucible Only: Includes 1 x High-Purity Graphite Crucible.
- Full Set (Recommended): Includes 1 x Graphite Crucible + 1 x Tailored Quartz Protective Sleeve.
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