Sillimanite

Product Introduction

One of the three refractory raw materials for high alumina, it has a moderate expansion rate (7-8%), a slow reaction rate of mullite, low creep value, and is mainly used for thermal shrinkage compensation of materials.

Sillimanite is a member of the kyanite group of minerals, also known as sillimanite. Its crystals typically exhibit a flattened prismatic shape with a chain-like structure.Color: Gray, white-brown, or light blue with a vitreous luster. Relative hardness: 6 - 7.5. Bulk density: 3.23-3.27g/cm³ .

Product Specifications

80 mesh to 120 mesh (custom processing available per user requirements)

Application Fields

Ceramic materials, refractory materials, foundry materials, silicon-aluminum alloys, crucible kiln furniture, precision casting, insulators, and decorative materials.

Product Characteristics

Natural crystalline raw material with high refractoriness;

High mechanical strength at elevated temperatures;

Excellent high-temperature volume stability, creep resistance, slag resistance, and acid/alkali resistance;

Superior thermal shock stability.

Physical and Chemical Properties