// SPEC · Refractory Raw Materials
White Fused Alumina Al2O3 99% 325 Mesh Powder
White fused alumina Al2O3 99% 325 mesh powder; ultra-low Fe2O3 for high-purity refractory castable matrix, continuous casting nozzle coatings, and electronics ceramics kiln furniture wash coats.
// Key Features
- Fine 325 mesh (D90 <45μm) for dense, low-porosity refractory matrix formation
- Al2O3 ≥99% with Fe2O3 ≤0.03% suitable for electronics-grade kiln furniture coatings
- High chemical purity preventing unwanted reactions with specialty glass melts and ceramics
- Excellent packing efficiency as matrix filler in high-performance monolithic refractories
// Technical Specifications
| SiO2 (%) | ≤0.04 |
| Al2O3 (%) | ≥99.0 |
| Fe2O3 (%) | ≤0.03 |
| Available Grain Sizes | 200 mesh, 325 mesh, D90 <45μm |
| Bulk Density (g/cm³) | 1.00–1.20 |
// Applications
High-alumina castable fine matrix filler for steel ladle liningRefractory coating for continuous casting submerged entry nozzlesKiln furniture wash coat in electronics and piezoelectric ceramics firingInvestment casting ceramic shell slurry for nickel superalloy componentsSpecialty glass furnace crown and sidewall castable matrix
// Quick Specs
Max Temperature1900°C
Density3.98 g/cm³
StandardGB/T 2480
// Get Pricing
WhatsApp Us