What is activated alumina?

Activated alumina is also called activated alumina, usually abbreviated as "activated alumina", which uses alumina in the catalyst. It is a porous, highly dispersed solid material with a large surface area and micropores. The surface has the characteristics required for catalysis, such as adsorption performance, surface activity, excellent thermal stability, etc., so it is widely used as a catalyst and catalyst carrier for chemical reactions. Spherical activated alumina pressure swing oil adsorbent is white spherical porous particles. Activated alumina has uniform particle size, smooth surface, high mechanical strength, strong hygroscopicity, does not swell or crack after absorbing water, keeps the original state, is non-toxic, tasteless, and insoluble in water and ethanol.

Overview of alumina Al2O3 powder

Alumina is an inorganic substance with a chemical formula of Al2O3. It is a high-hardness compound, also known as bauxite in mining, ceramics, and materials science. It is a white solid, insoluble in water, odorless and tasteless, and very hard in nature. Easy to absorb moisture but not deliquescence (no moisture absorption after burning). Alumina is a typical amphoteric oxide (corundum is alpha-shaped and belongs to the most densely packed hexagonal compound. It is an inert compound, slightly soluble in acids and alkalis, and resistant to corrosion. [1] Soluble in inorganic acid and alkali solutions, But it is almost insoluble in water and non-polar organic solvents; relative density (d204) 4.0; melting point 2050°C, boiling point 2980°C, ionized ionic crystals at high temperature, often used to make refractory materials.

Industrial alumina is prepared from bauxite (alumina·3H2O) and diaspore.For alumina has high purity requirements, it is usually prepared by chemical methods.There are many different crystalline aluminas. There are more than 10 known crystals. There are three main crystal types, namely α-Al2O3, β-Al2O3, and γ-Al2O3. Among them, the structure is different and the nature is different. It almost completely transforms into α-Al2O3 at a high temperature above 1300℃. .

Spherical alumina Al2O3 powder characteristics: high filling density: large particle size, wide particle size distribution, high density filling of rubber and plastic can be realized, low viscosity, good fluidity rubber compound; high thermal conductivity: second to crystallization Compared with silicon oxide, the high packing density can make the thermal conductivity and heat dissipation rate of the composite higher;

Low wear resistance: due to its spherical shape, the kneader, molding machine and mold wear less.

Alumina Al2O3 is used to smelt high-quality bauxite to produce brown corundum, while high-quality aluminate is used to produce powder corundum and white corundum. Their natural crystal structure makes them hard and strong. At the same time, they are often used as raw materials for bonded abrasive tools and coated abrasive tools. Alumina Al2O3 can be recycled many times, and the number of cycles depends on the grade of material and the specific process. Most standard sandblasting equipment can be used.

Spherical alumina Al2O3 powder should be stored in a dry, cool and sealed environment, and should not be exposed to the air. In addition, avoid heavy pressure and transport as ordinary goods. It is equipped with double-layer plastic bag, which can be filled with argon under vacuum; it can be filled with argon under vacuum for protection. Vacuum packaging, 100G, 500G or 1KG/bag, 25kg/drum, or according to your requirements.

Alumina Al2O3 powder application

1. Paint: enamel paint, wear-resistant paint, plasma spraying.

2. Ceramics: transparent ceramics, bio-ceramics, alumina ceramics.

3. Petrochemical products: high-efficiency catalysts, catalyst carriers, automobile exhaust purification materials.

4. Polishing materials: sub-micron/nano-level abrasive materials, monocrystalline silicon wafer polishing, precision polishing materials.

5. Illumination: Long afterglow phosphor raw material and rare earth tricolor phosphor raw material high pressure sodium tube, LED lamp, etc.

6. Electronic products: integrated circuit substrates, single crystal materials, far infrared materials.

7. Cosmetics: cosmetic fillers.

8. Inorganic membrane materials.

Alumina Al2O3 is suitable for a variety of wet and dry treatment processes. It can finely grind the rough surface of any workpiece and is one of the most economical abrasives. The hardness of this sharp water chestnut synthetic abrasive is second only to diamond, and it is especially suitable for occasions with strict requirements for iron pollution. For the roughest cutting, it can also be made into a pebble shape to process precision-sized workpieces to achieve extremely low roughness. Due to its high density, sharpness, and rhombohedral structure, it is one of the fastest cutting abrasives.

Alumina Al2O3 powder price

The price of spherical alumina Al2O3 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate and the supply and demand of the spherical alumina Al2O3 powder market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for spherical alumina Al2O3 powder, please feel free to send an inquiry to get the latest price of spherical alumina Al2O3 powder.

Suppliers of alumina Al2O3 powder

As a global supplier of spherical alumina Al2O3 powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.