Product Introduction
Calcined Alumina Fine Powder is a high-purity, precision-engineered Al₂O₃ material ideal for ceramics, electronics, polishing, and refractory applications. Its fine particle size, low impurity levels, and thermal stability make it a preferred choice across industries where precision and quality matter. At Banlanchem, we provide premium calcined alumina fine powder with consistent quality and customizable specifications for global clients.

Key Features & Benefits
- High Purity (≥99.5%) for superior performance
- Fine, consistent particle sizes (1–5 µm)
- Excellent thermal stability and low impurity levels
- Ideal for precision polishing and ceramics applications
- Excellent wear resistance and surface finish quality
Technical Specifications
Brands | Chemical components %, | α-Al2O3%≥ | Particle size | |||||
Al2O3≥ | SiO2≤ | Fe2O3≤ | Na2O≤ | L.O.I≤ | D50,μm | ≤ | ||
A-CG-2 | 99.0 | 0.20 | 0.04 | 0.35 | 0.25 | 93 | 2-3 | 3% |
A-CG-2-A | 99.0 | 0.20 | 0.04 | 0.35 | 0.25 | 93 | 1.5-2 | 3% |
A-CG-1 | 99.5 | 0.10 | 0.04 | 0.35 | 0.20 | 90 | ≤1 | - |
Particle size could be processed to order
Special material glaze
The product is special α alumina ceramic glaze products, with high product purity and glaze whitening effect and stable product quality.
Brands | Chemical components %, | α-Al2O3%≥ | Particle size | |||||
Al2O3≥ | SiO2≤ | Fe2O3≤ | Na2O≤ | L.O.I≤ | D50,μm | ≤ | ||
A | 99.0 | 0.20 | 0.04 | 0.4 | 0.25 | 90 | 2-3 | 3% |
B | 99.0 | 0.20 | 0.04 | 0.35 | 0.25 | 93 | 2-3 | 3% |
If you are willing to wholesale quality, advanced and durable fine powder of calcined alumina from one of the famous China Calcined Alumina Fine Powder manufacturers, BANLAN is always at your service.
Applications
- Ceramics & Advanced Ceramics: Enables precision engineering of dense, wear-resistant materials.

- Polishing & Abrasives: Provides a smooth surface finish for optical lenses, electronics, and precision equipment.

- Refractories & Thermal Barrier Coatings: Strengthens thermal resistance and durability in high-temperature environments.
- Electronics Substrates: Ensures thermal and electrical performance for microchips and PCB components.

- Paints, Coatings & Polymers: Improves durability, wear resistance, and thermal characteristics in polymers and paints.
Why Choose Banlanchem?
- Consistent Quality, Tested in ISO-Certified Labs
- Custom Particle Size and Packaging Options
- Extensive Export Experience across the USA, EU, Middle East, and Asia
- Technical Support and Tailored Solutions for Your Specific Needs
Quality Control & Certifications
- Lot-by-lot Testing for Purity and Particle Size
- ISO 9001:2015, REACH, and RoHS Certified
- Detailed Certificates of Analysis (COA) Available Upon Request
Frequently Asked Questions (FAQ)
Q1: What is Calcined Alumina Fine Powder?
Calcined Alumina Fine Powder is a high-purity, thermally treated form of Al₂O₃ used in precision engineering, polishing, and electronics due to its fine particle size and thermal stability.
Q2: What are its main uses?
It is used in ceramics, electronics, polishing, aerospace coatings, refractories, and paints due to its low impurity, thermal resistance, and wear-resistant properties.
Q3: What particle sizes are available?
Standard sizes range from 1–5 µm, and custom sizes can be manufactured upon request.
Q4: How is it packaged?
Available in 25 kg paper bags, 1000 kg bulk bags, or custom packaging upon request. Export-ready packaging available for global shipment.
Q5: What makes Banlanchem’s calcined alumina different?
We guarantee high purity (99.5%), low impurity levels (Na₂O, Fe₂O₃), precise particle size distribution, and robust quality controls with ISO certifications. Our dedicated team is here to support your application and ensure optimal performance.
Packaging & Delivery
- Standard Packaging: 25 kg paper bags, 1000 kg bulk bags, or custom packaging available
- Delivery Time: 7–15 working days after order confirmation
- Global Export Supported

Contact Us for a Quote or Free Sample
Interested in using our high-purity Calcined Alumina Fine Powder for your next project? Contact us today for pricing, free samples, or technical support!
Email: [email protected] | Phone: +86 139699915733
Website: https://www.banalnchem.com