Basic introduction of high purity alumina


Basic introduction of high purity alumina

High purity alumina is a chemical with the chemical formula of Al2O3,with purity of more than 99.99% we know as high purity alumina

essential information:

Molecular formula: Al2O3

Molecular weight: 102

Melting point: 2050 ℃

Specific gravity: Al2O3 α Type 2.5-3.95g/cm3

Crystal form: γ Type α type

Features: high purity, particle size can be controlled according to the process, uniform particle size distribution, white tasteless powder

chemical analysis:

High purity aluminum oxide powder is a white powder with uniform particle size, easy dispersion, stable chemical properties, moderate high temperature shrinkage and good sintering properties; High conversion and low sodium content. This product is the basic raw material for the production of heat-resistant, wear-resistant and corrosion-resistant products, such as high aluminum refractories, high-strength ceramic products, automotive spark plugs, advanced grinding materials and other products, with reliable quality, high melting point, good thermal stability, high hardness, good wear resistance, high mechanical strength, good electrical insulation and corrosion resistance. It is widely used in shaped and amorphous refractories Mirror polishing of decorative materials such as refractory castable binder, wear-resistant abrasive tools, high-purity refractory fiber, special ceramics, electronic ceramics, structural ceramics, stainless steel and granite. It can meet the requirements of users with different uses and process conditions. A alumina adopts primary industrial alumina, aluminum hydroxide and additive technology. After low-temperature phase conversion calcination, it adopts advanced grinding technology and process to produce activated alumina powder, which is characterized by large activity and fine particle size. It is especially suitable for shaped products and amorphous refractories such as refractory castables, plastic, repair materials, gunning materials and coating materials. It plays a strong role in improving the high-temperature strength and corrosion resistance of refractories

Main application

1) Luminescent material: used as the main raw material of rare earth trichromatic phosphor, long afterglow phosphor, PDP phosphor and led phosphor;

2)Transparent ceramics: used as fluorescent tubes of high-pressure sodium lamps and electrically programmable read-only memory windows;

3) Single crystal: used for manufacturing ruby, sapphire and yttrium aluminum garnet;

4)High strength and high aluminum ceramics: used for manufacturing integrated circuit substrates, cutting tools and high-purity crucibles;

5)Abrasive: abrasive used for manufacturing glass, metal, semiconductor and plastic;

6)Diaphragm: used for manufacturing diaphragm coating of lithium battery;

7)Others: used as active coating, adsorbent, catalyst and catalyst carrier, vacuum coating, special glass raw materials, composites, resin filler, bioceramics, etc

Post time: Oct-12-2021