Description

Calcium Aluminate is a key inorganic compound widely utilized as a high-performance refractory binder and hydraulic cement. Its primary value lies in its ability to form stable, high-strength ceramic phases at elevated temperatures and its rapid setting properties when mixed with water. This makes it an essential material for industries requiring durable linings and fast-setting, high-alumina cements, such as steelmaking, foundries, and advanced construction. For precise identification, the CAS number is 12042-68-1.

Application

• Refractory Castables and Monolithics: As a crucial binder in high-alumina and low-cement castables for furnace linings, ladles, and kilns.
• Calcium Aluminate Cements (CAC): The base material for manufacturing rapid-hardening, high-early-strength, and sulfate-resistant cements.
• Steel and Foundry Industry: Used in gunning mixes, patching materials, and precast shapes for metal flow control and repair.
• Wastewater Treatment: Acts as a coagulant aid for phosphate removal and sludge conditioning.
• Ceramics and Advanced Materials: A precursor for synthesizing calcium aluminate glasses, bioceramics, and other specialty ceramics.
• Fireproofing and Abrasion-Resistant Coatings: Provides thermal insulation and protection for structural components.

Basic Information

Product Name	Calcium Aluminate
CAS No.	12042-68-1
Molecular Formula	Typically expressed as xCaO·yAl₂O₃ (e.g., CA, CA₂, C₁₂A₇)
Molecular Weight	Varies by phase (e.g., CA ~ 158.04 g/mol)
Synonyms	Calcium Aluminate Cement; High Alumina Cement; Aluminous Cement; Fondu Cement; CA Cement; Calcium Dialuminate; Calcium Monoaluminate; Mayenite (for C₁₂A₇)
EINECS	234-931-0

Quality Control

Our Calcium Aluminate is manufactured under strict process controls to ensure consistent chemical composition and physical performance. Quality is verified through analysis of key parameters including alumina (Al₂O₃) and lime (CaO) content, phase composition via X-ray diffraction (XRD), and setting time tests. Certificates of Analysis (COA) detailing lot-specific results are provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, prolonged exposure to atmospheric humidity must be avoided to prevent caking and premature reaction.

Specification

Item	Specification
Appearance	White to gray powder
Al₂O₃ Content	≥ 70 %
CaO Content	25 - 30 %
SiO₂ Content	≤ 1.0 %
Fe₂O₃ Content	≤ 0.5 %
Loss on Ignition (LOI)	≤ 2.0 %
Fineness (Blaine)	3000 - 5000 cm²/g
Setting Time (Initial)	2 - 6 hours

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