High Alpha Phase Content (>95%) Low Sodium (<0.08%) Calcined Alumina for Fine Ceramics with Precisely Controlled Particle Size

Price Negotiable

Price: 200-500 yuan/kg

MOQ: Negotiable

Delivery Time: Negotiable

Brand: KEGU

Product Description

Premium Calcined Alumina for Fine Ceramics

High-performance calcined alumina featuring high alpha phase content (>95%), low sodium (<0.08%), and controlled particle size for die pressing, isostatic pressing and other ceramic forming processes.

High-Purity Calcined Alumina for Demanding Fine Ceramic Applications

Our premium calcined alumina is engineered for manufacturers of high-performance technical ceramics. Produced in a tunnel kiln under strict thermal controls, it delivers a consistent and reliable foundation for components where purity, microstructure, and sintering performance are critical.

Core Product Advantages

High Alpha Phase Content (>95%): Ensures optimal sintering behavior and final ceramic density, leading to superior mechanical and thermal properties.
Low Alkali Content (Na₂O ≤ 0.08%): Minimizes the risk of glass phase formation and grain growth anomalies during firing, resulting in a more predictable and stable microstructure.
Exceptional Chemical Purity (Al₂O₃ ≥ 99.7%): Reduces impurities that can compromise the performance, color, and electrical insulation of the final ceramic product.
Precisely Controlled Particle Size: Multiple grades available with tightly controlled particle and crystal sizes, allowing for tailored powder packing and shrinkage management.

Technical Data Sheet: Calcined Alumina Grades

The following table outlines key specifications for our standard grades. Custom formulations are available upon request.

Grade	Al₂O₃ (%) ≥	SiO₂ (%) ≤	Fe₂O₃ (%) ≤	Na₂O (%) ≤	α-phase (%) ≥	Average Particle Size (µm)	Primary Crystal Size (µm)
ALC-11	99.7	0.04	0.02	0.03	95	-	3.0 - 7.0
ALC-12	99.7	0.05	0.04	0.05	95	-	1.0 - 3.0
ALC-11G	99.7	0.10	0.03	0.05	95	4.0 - 6.0	-
ALC-12G	99.7	0.10	0.04	0.05	95	3.0 - 4.0	-
ALC-13G	99.7	0.15	0.04	0.08	95	2.0 - 3.0	-
ALC-21G	99.7	0.10	0.04	0.05	95	2.5 - 3.5	-

Applications in Advanced Ceramics

Our calcined alumina is the material of choice for a wide range of technical ceramic forming processes and end-products:

Forming Processes

Dry Pressing & Isostatic Pressing: Excellent flowability and compaction for high-density green bodies.
Hot Pressure Casting: Suitable for complex shapes and high-volume production.

End-Use Components

Structural Ceramics: High-wear components, liners, and nozzles
Ceramic Seals: Mechanical face seals requiring high hardness and corrosion resistance
Electronic Substrates & Insulators: Where high purity ensures excellent electrical properties
High-Quality Alumina Grinding Media & Balls: Used as raw material for granulation in premium alumina grinding bodies

Your Partner for High-Performance Ceramic Materials

We understand that your ceramic products are only as good as the raw materials you use. By providing consistently high-purity calcined alumina with tailored physical properties, we empower you to manufacture more reliable, higher-performing ceramic components.

Interested in seeing how our alumina can improve your product? Contact our technical team today to discuss your specific requirements and request product samples or a technical datasheet.