Description

Kyanite CAS NO 1302-76-7 is a naturally occurring aluminum silicate mineral valued for its unique physical properties, including high thermal stability and resistance to chemical attack. This material is a critical raw material for the production of high-performance refractory products and advanced ceramics. It is essential for industries requiring durable materials that can withstand extreme temperatures and corrosive environments, such as metallurgy, foundries, and the manufacturing of spark plugs and insulating components.

Application

• Refractory Manufacturing: A primary raw material for high-alumina refractories, including bricks, mortars, and castables used in furnaces, kilns, and incinerators.
• Ceramics Industry: Used in the production of porcelain, sanitaryware, and technical ceramics, where it contributes to increased strength and thermal shock resistance.
• Abrasive Products: Employed as a component in grinding wheels, sandpapers, and other abrasive tools due to its hardness.
• Investment Casting: Serves as a key ingredient in ceramic molds and cores for precision metal casting.
• Foundry Sands: Acts as a high-temperature binder in mold and core sands for ferrous and non-ferrous metal casting.
• Insulation Materials: Utilized in the formulation of high-temperature insulation boards and fibers.
• Welding Rod Coatings: Incorporated into flux coatings for welding electrodes to stabilize the arc and improve slag characteristics.
• Geopolymer & Cementitious Binders: Investigated and used as a source of alumina in the synthesis of geopolymers and specialty cements.

Basic Information

Product Name	Kyanite
CAS No.	1302-76-7
Molecular Formula	Al2SiO5 (or Al2O3·SiO2)
Molecular Weight	162.05 g/mol
Synonyms	Cyanite; Disthene; Kyanite Ore; Aluminum Silicate (Al2SiO5); Aluminium Silicate; Mullite Precursor; Andalusite (polymorph); Sillimanite (polymorph)
EINECS	215-100-1

Quality Control

Our Kyanite is sourced and processed under strict quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through analysis of key parameters such as alumina (Al2O3) content, iron oxide (Fe2O3) levels, particle size distribution, and bulk density. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance and production planning.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong acids and fluorides. The product is not hygroscopic under normal conditions but should be protected from excessive moisture to prevent caking.

Specification

Item	Specification
Appearance	Blue to bluish-gray crystalline powder
Al2O3 Content	≥ 55.0 %
SiO2 Content	≤ 42.0 %
Fe2O3 Content	≤ 1.5 %
TiO2 Content	≤ 1.2 %
Loss on Ignition (LOI)	≤ 1.5 %
Particle Size (-200 mesh / 74 µm)	≥ 90 %
Bulk Density	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.