ThermalEast
// SPEC · Refractory Raw Materials

White Fused Alumina Al2O3 99.5% Micropowder D50 <5μm

White fused alumina Al2O3 99.5% micropowder D50 <5μm; high reactivity for ultra-low cement castable matrix, torpedo ladle monolithic linings, and advanced technical ceramics sintering aids.

Refractory Raw MaterialsMax Temp: 1900°CGB/T 2480

// Key Features

  • Ultra-fine D50 <5μm particle size maximizing reactive sintering activity in castable matrix
  • Al2O3 ≥99.5% enabling ultra-low cement (ULC) and no-cement (NC) castable formulation
  • High specific surface area improving bonding with hydratable alumina in monolithic refractories
  • Optimized particle size distribution enhancing self-flow castable flowability and green strength

// Technical Specifications

SiO2 (%)≤0.03
Al2O3 (%)≥99.5
Fe2O3 (%)≤0.02
Available Grain SizesD50 <5μm, D50 <3μm, D97 <10μm
Bulk Density (g/cm³)0.40–0.65

// Applications

Ultra-low cement castable matrix for steel ladle working liningSelf-flow castable for blast furnace taphole surround and runnerTorpedo ladle high-purity monolithic lining repair mixAdvanced structural ceramics reactive sintering matrixContinuous casting tundish permanent lining low-cement castable
// Quick Specs
Max Temperature1900°C
Density3.98 g/cm³
StandardGB/T 2480
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