Calcined alumina micro powder SAL-06

Preparation, Properties, and Applications of Calcined Alumina Micropowder SAL-06

1. Introduction

Aluminum oxide (Al ₂ O3) is an important inorganic material with high hardness, high melting point, excellent chemical stability, and insulation properties. It is widely used in ceramics, refractory materials, catalyst carriers, electronic materials, and other fields. Calcined alumina micro powder SAL-06 is a high-temperature calcined alumina micro powder with high purity and specific particle size distribution, suitable for high-end industrial applications. This article will provide a detailed introduction to the preparation process, performance characteristics, and application fields of calcined alumina micro powder SAL-06.

2. Preparation process

The preparation process of calcined alumina micro powder SAL-06 mainly includes steps such as raw material selection, calcination treatment, crushing, and classification.

2.1 Raw material selection

The raw material for preparing calcined alumina micro powder SAL-06 is usually high-purity aluminum hydroxide (Al (OH) ∝) or alumina precursor. The purity of raw materials directly affects the quality of the final product, so choosing high-purity raw materials is the key to preparing high-quality alumina micro powders.

2.2 Calcination treatment

Calcination is a key step in the preparation of alumina micro powder. During the calcination process, the precursor of aluminum hydroxide or alumina undergoes dehydration, decomposition, and crystal transformation at high temperatures, ultimately forming stable α - Al ₂ O3. The calcination temperature, time, and atmosphere have a significant impact on the crystal structure, particle size, and specific surface area of alumina. Usually, the calcination temperature is between 1200 ℃ and 1600 ℃, and the calcination time depends on specific process requirements.

2.3 Crushing and Grading

The calcined alumina block needs to be crushed and graded to obtain the desired micro powder particle size. The crushing methods include mechanical crushing, air flow crushing, etc., while classification is achieved through screening or air flow classification. By controlling the crushing and grading process, alumina micro powder with a specific particle size distribution can be obtained.

3. Performance characteristics

The calcined alumina micro powder SAL-06 has the following performance characteristics:

3.1 High purity

SAL-06 typically has a purity of over 99.9% and extremely low impurity content, making it suitable for applications that require high material purity.

3.2 Uniform particle size distribution

Through precise crushing and grading processes, the particle size distribution of SAL-06 is uniform, with an average particle size typically between 0.5 μ m and 5 μ m, which can be adjusted according to customer needs.

3.3 High hardness

Alpha Al ₂ O3 has high hardness (Mohs hardness of 9), making SAL-06 excellent in wear resistance, scratch resistance, and other aspects.

3.4 Excellent chemical stability

SAL-06 exhibits excellent stability in acidic, alkaline and other chemical environments, making it suitable for applications in corrosive environments.

3.5 High insulation performance

Aluminum oxide is an excellent insulation material, and SAL-06 has a wide range of applications in electronic materials and insulation coatings.

4. Application Fields

Calcined alumina micro powder SAL-06 has been widely used in multiple fields due to its excellent performance.

4.1 Ceramic Materials

SAL-06, as an additive in ceramic materials, can improve the hardness, wear resistance, and chemical stability of ceramics, and is widely used in electronic ceramics, structural ceramics, and functional ceramics.

4.2 Refractory Materials

SAL-06, as the main component or additive in refractory materials, can improve the high-temperature performance and thermal shock resistance of refractory materials, and is suitable for industries such as metallurgy, glass, and cement.

4.3 Catalyst Carrier

SAL-06 has a high specific surface area and chemical stability, and has important applications as a catalyst carrier in fields such as petrochemicals and environmental protection.

4.4 Electronic Materials

SAL-06 is widely used in semiconductors, integrated circuits, and electronic components as an insulating layer, packaging material, and substrate material in electronic materials.

4.5 Coatings and Coatings

SAL-06, as an additive for wear-resistant and corrosion-resistant coatings, can improve the hardness, wear resistance, and chemical corrosion resistance of coatings, and is suitable for industries such as machinery, chemical engineering, and automotive.

5. Conclusion

Calcined alumina micro powder SAL-06 is a high-performance inorganic material with high purity, uniform particle size distribution, high hardness, excellent chemical stability, and insulation properties. Through precise preparation processes, it can meet the needs of different application fields. SAL-06 has broad application prospects in the fields of ceramics, refractory materials, catalyst carriers, electronic materials, and coatings. With the advancement of technology and the development of industry, calcined alumina micro powder SAL-06 will play an important role in more high-end application fields.