Mullite

Description

1. Product Overview
   Mullite is a high-performance aluminosilicate refractory material composed primarily of 3Al₂O₃·2SiO₂, engineered for extreme thermal and mechanical stability. It is widely used in advanced ceramics, refractories, and high-temperature industrial processes where resistance to heat, creep, and chemical corrosion is critical. Its exceptional thermal shock resistance and low thermal expansion make it a strategic material for industries operating under severe thermal cycling conditions. Mullite delivers long service life and operational reliability, reducing downtime and total cost of ownership in demanding applications.
2. Key Specifications & Technical Characteristics

• Chemical Composition: 3Al₂O₃·2SiO₂ (Aluminum Silicate)
• Alumina (Al₂O₃) Content: 60–72% (typical grades)
• Silica (SiO₂) Content: 25–38%
• Purity Level: Industrial / High-purity refractory grades available
• Physical Form: Powder, granular, or calcined aggregate
• Color: White to light gray
• Particle Size: 0–5 mm (customizable micronized grades available)
• Bulk Density: ~2.8–3.2 g/cm³
• Melting Point: ~1840°C
• Thermal Expansion: Very low coefficient
• Packaging: 25 kg bags, 1 MT jumbo bags, bulk containers
• Shelf Life: Indefinite under dry storage conditions

3. Core Industrial Applications
   Mullite is extensively used in refractory linings for steel, glass, and non-ferrous metal industries due to its superior heat resistance and dimensional stability. It is a key material in kiln furniture, furnace linings, and ceramic substrates where structural integrity at high temperatures is essential. In advanced ceramics, it enhances mechanical strength, thermal shock resistance, and durability of finished products. Compared to conventional aluminosilicates, mullite offers superior creep resistance, lower thermal expansion, and longer operational lifespan, making it ideal for high-efficiency industrial thermal systems.
4. Competitive Advantages

• Exceptional thermal stability and resistance to thermal shock
• Consistent chemical composition ensuring predictable performance
• High supply reliability with scalable bulk production capacity
• Optimized logistics for global industrial distribution
• Cost-effective lifecycle performance versus alternative refractories
• Environmentally stable material with low emissions in use
• Strong technical documentation and application support available
• Proven performance in extreme industrial environments

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: 20–27 MT per 20-ft container
• Supply Mode: Bulk, palletized jumbo bags, or loose container loading
• Delivery Terms: FOB / CIF / CFR available upon request