Refractory Fire Assay Alumina Ceramic Crucible for Gold Melting

• Certification: ISO
• Shape: Cylindrical
• Color: Light Yellow
• Refractoriness: 1580< Refractoriness< 1770
• Type: Alumina Crucible
• Purity: ≥ 99.7%
• Transport Package: Export Packing
• Specification: customized
• Trademark: Yosion
• Origin: China
• Production Capacity: 1000000PCS/Year

Product Description

Specification and Features :

1) High purity: Al203> 99%, good chemical resistance  
2) High temperature resistance: Long-term use in 1600°C, short-term in 1800°C  
3) Good resistance to rapid cooling and heating, not easy to burst.  
4) Slip casting and high density
5) Various shapes and sizes.
 
High purity alumina, absolutely powerful.
 

High Purity Alumina Chemical Composition
Al2O3	≥ 99.7%	Apparent porosity (%)	2500
R2O	≤ 0.2	Dielectric constant Σ (1MHz)	2
SiO2	≤ 0.2	Thermal Shock	Good
Volume density (g/cm2)	≥ 3.80	The highest operation temperature (°C)	1800

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