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E-mail: zzzboya@163.com
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Sillimanite
- Commodity name： Sillimanite
- Product description
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Product Introduction
Sillimanite is a mineral within the kyanite group, typically characterized by its flat columnar crystals and chain-like structures. It can be found in various colors such as grey, white, brown, or light blue, with a glassy luster. Sillimanite has a relative hardness ranging from 6 to 7.5 and a volumetric density of 3.23-3.27g/cm3.
Sillimanite is a premium natural aluminosilicate mineral widely used as an important raw material for high-performance refractory products. With excellent thermal stability, low thermal expansion, and strong resistance to high temperatures and chemical erosion, Sillimanite provides reliable support for demanding industrial environments. As a valuable component of High alumina refractory material, Sillimanite can transform into mullite during high-temperature firing, improving the strength, durability, and thermal shock resistance of refractory products. It is commonly applied in the production of high alumina bricks, kiln furniture, furnace linings, and refractory castables for industries including steel, glass, ceramics, and foundry. The production process involves careful mineral selection, crushing, grading, and quality inspection to ensure consistent composition and particle performance. With its stable characteristics and excellent high-temperature behavior, Sillimanite helps manufacturers develop durable refractory solutions for long-term industrial operation.
Product Characteristics
● Natural crystalline raw materials with high fire resistance;
● High temperature mechanical strength;
● High temperature volume stability, creep resistance, slag resistance, acid and alkaline resistance;
● Good thermal shock stability.
Particle Size
80 - 120 mesh（Can be processed according to customer’s special requirements）
Application Fields
Ceramic materials, refractory materials （blast furnace and hot blast furnace bricks), casting materials, silicon aluminum alloys, sagger kiln furniture, precision casting, insulation and decorative materials, etc.
Physical and Chemical Indicators
Key words:
Sillimanite
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