Product Description

Whiter fused alumina is fused by alumina powder by electric arc furnace under high temperature. It has white color and little higher hardness and lower toughness comparing with brown fused alumina. The micro hardness of the product is ********0kg/mm2. It has higher hardness and slight lower toughness comparing with brown fused alumina. It is also characterized by its high purity, acid and alkali resistance, good thermal stability. It’s the high grade refractory materials. Purpose Specification Chemical Composition% Al2O3 Na2O SiO2 CaO For Abrasives F *2#—*0# ≥*9.0 ≤0.5 — ≤0.4 *0#—**0# ≥*8.5 ≤0.6 **0#—**0# ≥*8.2 ≤0.7 — ≤0.4 W 1#**3# ≥*7.5 ≤0.8 ≤1.0 ≤0.5 Refractory - **1mm
**3mm
**5mm
**8mm
***2mm ≥*9.0 ≤0.5 — ≤0.4 Micro-powder **0#—0
**0#*0
**0#*0 ≥*8.5   ≤0.3 ≤0.5 Physical Performance Index Item Index Color White Crystal shape Trigonal Hardness(mohs) ≥9.0 Melting Point (°C) ***0 True density (g/cm3) ≥3. *0 Linear Expansion Coefficient(0—***0°C) 7—9