High-Alumina Pink Fused Alumina: A Key Tool for Reducing Refractory Costs

High-alumina pink fused alumina: Al₂O₃ ≥ 90%, Cr₂O₃ ≥ 4% (Al₂O₃ + Cr₂O₃ ≥ 95%), bulk density ≥ 3.70 g/cm³, Fe₂O₃ ≤ 0.1%. Characterized by a red appearance, high density, high alumina and chrome content, and low impurity levels, it offers excellent performance-including high refractoriness, superior compressive strength, good thermal stability, and strong resistance to slag erosion. It is widely used in shaped and unshaped refractories that typically employ corundum or high-alumina bauxite-such as iron runner castables, taphole clay, ladle castables, Al-Mg-C bricks, tundish precast shapes, high-alumina wear-resistant castables, and glass furnace refractory bricks. It can replace a portion of standard corundum and high-alumina bauxite, effectively reducing raw material costs by 10%–30% while maintaining refractory quality.

Product Features of High-Alumina pink fused alumina

1. Low impurity levels:

No auxiliary additives are used during production, ensuring excellent low-sodium, low-potassium, and low-calcium specifications; metallic impurity levels are strictly controlled through the selection of chrome green raw materials with minimal metallic impurities.

2. High bulk density:

While standard pink fused alumina typically has a bulk density of around 3.5 g/cm³, high-alumina pink fused alumina reaches up to 3.7 g/cm³. This high density results in reduced porosity and a compact structure, yielding refractories with superior strength and stability compared to those made with standard pink fused alumina.

3. Consistent quality:

Due to stringent raw material requirements, every batch of raw materials undergoes rigorous, repeated testing to ensure consistent product quality.

4. Cost-effective alternative to traditional corundum raw materials that enhances product performance:

Measured specifications of high-alumina pink fused alumina