Calcined alumina micro powder SAL60

Preparation, Properties, and Applications of Calcined Alumina Micropowder SAL60

Calcined alumina micro powder SAL60 is a high-performance inorganic material with excellent characteristics such as high purity, high hardness, high wear resistance, high temperature resistance, and good chemical stability. It is widely used in fields such as ceramics, refractory materials, electronic materials, catalyst carriers, abrasives, coatings, etc. This article will provide a detailed explanation of the preparation process, performance characteristics, and application fields of SAL60.

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1、 Preparation process of calcined alumina micro powder SAL60

The preparation of calcined alumina micro powder SAL60 usually uses industrial alumina or aluminum hydroxide as raw materials, and is made through a series of physical and chemical treatment processes. The main preparation process includes the following steps:

1. Raw material selection and pretreatment

The choice of raw materials directly affects the performance of the final product. High purity industrial alumina or aluminum hydroxide is usually used as raw materials. The raw materials need to undergo pre-treatment such as crushing and screening to ensure particle uniformity and reactivity.

2. Calcination process

Calcination is a crucial step in the preparation of SAL60. The pre treated raw materials are calcined at high temperatures (usually 1200 ℃~1600 ℃) to undergo phase transition and transform into stable α - Al ₂ O3 phase. During the calcination process, the moisture, impurities, and organic matter in the raw materials are removed, while the grain size and crystal structure are optimized.

3. Crushing and Grading

The calcined alumina block needs to be crushed into fine powder. The crushing process includes ball milling, air flow milling, etc. to ensure the uniformity of particle size. Subsequently, the micro powder was screened using a grading device to obtain a particle size distribution that meets the requirements.

4. Surface treatment

According to application requirements, SAL60 micro powder may require surface modification treatment, such as coating with silane coupling agents or organic coatings, to improve its dispersibility and bonding performance in composite materials.

5. Quality inspection and packaging

The final product needs to undergo strict quality testing, including testing of purity, particle size distribution, specific surface area, crystal structure, and other indicators. Qualified products are packaged and stored in a dry environment.

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2、 Performance characteristics of calcined alumina micro powder SAL60

1. High purity

SAL60 typically has an alumina content of over 99% and extremely low impurity content, making it suitable for applications that require high material purity.

2. High hardness and wear resistance

The Mohs hardness of the α - Al ₂ O3 phase is 9, second only to diamond, therefore SAL60 has excellent hardness and wear resistance, making it suitable for use as an abrasive or wear-resistant coating.

3. High temperature resistance

SAL60 has a melting point of up to 2050 ℃ and can maintain stable physical and chemical properties in high-temperature environments, making it suitable for high-temperature refractory materials.

4. Chemical stability

Aluminum oxide micro powder has excellent corrosion resistance to acids, alkalis, and most chemical substances, and can be used stably for a long time in harsh chemical environments.

5. Good dispersibility

Through optimized crushing and surface treatment processes, SAL60 micro powder has a uniform particle size distribution and good dispersibility, making it easy to evenly distribute in composite materials.

6. High specific surface area

SAL60 micro powder has a large specific surface area and is suitable for use as a catalyst carrier or adsorbent material.

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3、 Application fields of calcined alumina micro powder SAL60

1. Ceramic materials

SAL60 micro powder is an important raw material for preparing high-performance ceramics. Its high purity and hardness characteristics endow ceramic products with excellent mechanical properties and thermal stability, making them widely used in fields such as electronic ceramics, structural ceramics, and functional ceramics.

2. Refractory materials

Due to its excellent high temperature resistance and chemical stability, SAL60 is widely used in the manufacture of refractory bricks, castables, and refractory coatings, and is applied in high-temperature furnaces in industries such as metallurgy, glass, and cement.

3. Electronic materials

SAL60 micro powder is used as an insulation material, substrate material, and packaging material in electronic materials. Its high purity and stable electrical properties can meet the high reliability requirements of electronic devices.

4. Catalyst carrier

The high specific surface area and chemical stability of SAL60 micro powder make it an ideal catalyst carrier, widely used in fields such as petrochemicals and environmental catalysis.

5. Abrasives and polishing materials

The high hardness and wear resistance of SAL60 micro powder make it an ideal material for manufacturing grinding wheels, polishing powders, and grinding pastes, suitable for precision machining of materials such as metals, glass, ceramics, etc.

6. Coatings and Coatings

In the field of coatings and coatings, SAL60 micro powder is used as a reinforcing filler to improve the hardness, wear resistance, and corrosion resistance of coatings, and is widely used in industrial anti-corrosion coatings and functional coatings.

7. Composite materials

SAL60 micro powder can be added as a reinforcing phase to polymer, metal or ceramic matrix composites to improve their mechanical and thermal properties.

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4、 Future Development Trends

With the advancement of technology and the increase in industrial demand, the application fields of calcined alumina micro powder SAL60 will be further expanded. In the future, its development trends include:

1. High performance

By optimizing the preparation process and surface modification technology, the purity, dispersibility, and functionality of SAL60 micro powder can be further improved.

2. Green manufacturing

Develop low-energy and low pollution preparation processes to reduce environmental impact.

3. Multi functionality

Explore the application of SAL60 micro powder in emerging fields such as new energy materials, biopharmaceutical materials, etc.

4. Customized services

According to customer needs, we provide customized products with different particle sizes, purities, and surface characteristics to meet diverse application requirements.

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Conclusion

Calcined alumina micro powder SAL60, as a high-performance inorganic material, plays an important role in multiple industrial fields. Its excellent performance and wide application prospects make it an important component of materials science and industrial technology. With the continuous advancement of technology, SAL60 micro powder will demonstrate its unique value in more fields, providing strong support for industrial development and technological innovation.