High Hardness Calcined Aluminum Oxide Abrasive Powder 99.5%
Calcined Alumina Powder 99.5% For Heat-Resistance And Corrosion-Resistance Products
1. Calcined Alumina Powder Introduction
Taking the superior industrial alumina as raw material, Calcined Alumina is produced through the method of advanced high temperature down draught kiln with scientific calcine. These make sure it has the advantages as follows: less trash, high transfer rate, stable contraction, and great variety of goods. The shape is fine sand or powdery with white color, As its equal particle sizes and dispersing easily, it has a good sinterability. Calcined Alumina is the basic raw material for heat-resistance and corrosion-resistance products, such as high-alumina refractory, high level ceramic products, car used sparking plug, electronic ceramic parts, material for iron and steel oven, high temperature friction material and polishing grinding products, ect.
2. Calcined Alumina Powder Specifications
| Type | Median sodium | Low sodium | ||||||
| Brand | EK-4M | EK-12M | EK-SF | EK-06L | ||||
| composition% | Guarantee value | Typical value | Guarantee value | Typical value | Guarantee value | Typical value | Guarantee value | Typical value |
| AL2O3 | ≥99 | 99.37 | ≥99 | 99.34 | ≥98.5 | 99.08 | ≥99 | 99.34 |
| SiO2 | ≤0.2 | 0.10 | ≤0.2 | 0.12 | ≤0.2 | 0.10 | ≤0.2 | 0.11 |
| Fe2O3 | ≤0.2 | 0.06 | ≤0.2 | 0.08 | ≤0.2 | 0.13 | ≤0.2 | 0.08 |
| Na2O | ≤0.3 | 0.25 | ≤0.25 | 0.18 | ≤0.25 | 0.13 | ≤0.25 | 0.10 |
| True density g/cm3 | ≥3.95 | 3.96 | ≥3.92 | 3.94 | ≥3.92 | 3.94 | ≥3.92 | 3.95 |
| Median particle diameter D50μm | 3~5 | 3.47 | 0.9~1.5 | 0.93 | 1.5~2.5 | 1.66 | 0.9~1.5 | 1.13 |
| α-AL2O3 inversion ratio % | ≥95 | ≥95 | ≥95 | ≥95 | ||||
| Particle distribution | Unimodal | Unimodal | Bimodal | Bimodal | ||||
| Inspection standard | GB/T3044-89；GB3604-83 | |||||||
3. Calcined Alumina Powder General Advantages
- Good volume stability.
- unique high sintering activity.
- Good brightness,
- Good finishing.
- High conversion rate.
- High Purity 99.5-99.8%
3. Calcined Alumina Powder Characteristics
1. High Hardness
2. High Compression Strength
3. Abrasive / Wear-Resistance
4. Chemical Inertness
5. High Degree of Refractoriness
6. Superior Electrical Insulating Properties
7. Resistance to Thermal Shock and High Melting Point
4. Calcined Alumina Powder Particle Sizes Distributions
5. Calcined Alumina Powder Applications
1. Polishing
2. Structural Ceramics
3. Technical Ceramics
4. Body and Vehicle Armor
5. Lapping
6. Laminates
7. Coatings
8. Filtration
9. Abrasives
10. Refractory
11. Milling
12. Filler
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