Description

Anorthite is a calcium aluminosilicate mineral and a fundamental member of the feldspar group, with the chemical formula CaAl2Si2O8. It serves as a critical raw material in the production of advanced ceramics, glass, and cement, valued for its high alumina content and thermal stability. This product is essential for manufacturers in the ceramics, construction, and metallurgical industries seeking to enhance product durability and performance.

Application

• Ceramics & Refractories: A key component in the formulation of high-alumina ceramics, porcelain, and refractory bricks for high-temperature applications.
• Glass Manufacturing: Used as a source of alumina and calcium oxide in specialty glass and fiberglass production to improve chemical resistance and mechanical strength.
• Construction Materials: Incorporated into cement and concrete mixes to modify setting properties and enhance long-term durability.
• Geopolymer & Binder Systems: Acts as a precursor material in the synthesis of geopolymers and inorganic binders for sustainable construction.
• Metallurgical Flux: Employed in foundries and steelmaking as a slag conditioner to control viscosity and remove impurities.
• Catalyst & Catalyst Support: Utilized as a support material or raw ingredient in certain heterogeneous catalyst systems.
• Abrasive & Polishing Compounds: Ground to specific particle sizes for use in grinding wheels and precision polishing slurries.
• Research & Development: Serves as a standard or raw material in geological, materials science, and chemical research.

Basic Information

Product Name	Anorthite
CAS No.	1302-54-1
Molecular Formula	CaAl2Si2O8
Molecular Weight	278.21 g/mol
Synonyms	Calcium Aluminum Silicate; Calcium Aluminosilicate; Anorthite Feldspar; Lime Feldspar; Ca-Feldspar; CaAl2Si2O8; Anorthite (Mineral); Calcium Tecto-Alumodisilicate
EINECS	215-100-1

Quality Control

Our Anorthite is processed and controlled to meet stringent quality standards for industrial applications. Production follows a rigorous quality management system, with batch-to-batch consistency verified through advanced analytical techniques. Certificates of Analysis (COA) detailing chemical composition, particle size distribution, and impurity levels are available upon request to ensure compliance with your specific formulation requirements.

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 prolonged exposure to excessive moisture to prevent caking.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (XRD)	Complies
Assay (as CaAl2Si2O8)	≥ 95.0 %
Al2O3 Content	≥ 35.0 %
CaO Content	≥ 18.0 %
SiO2 Content	≤ 46.0 %
Particle Size (D50)	10 - 50 µm (Custom sizes available)
Loss on Ignition (LOI)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Iron (as Fe2O3)	≤ 0.5 %

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