High purity alumina

Generally speaking, high-purity alumina refers to an ultrafine powder material with a purity of 99.9% or more and a uniform particle size. Generally speaking, 3N alumina powder is mainly used for advanced ceramics, 4N high-purity alumina is mainly used for phosphors, and 5N high-purity alumina is widely used in sapphire crystals, lithium battery diaphragms, advanced ceramics, and plasma displays (PDP). ) Phosphors and some high-performance materials and other fields.

Application of high purity alumina:

1. Application of alumina single crystal sapphire

2. Transparent ceramics. Fluorescent tubes of high-pressure sodium lamps, etc.

3. Luminescent materials. It is the main raw material for rare earth three-color phosphors, long afterglow phosphors, PDP phosphors, and LED phosphors.

4. Polishing abrasive. Manufacturing abrasives for glass, metals, semiconductors, and plastics.

5. The battery industry. One of the main raw materials for lithium battery ceramic separators.

6. Paint. Rubber, plastic wear-resistant hardening agent

7. Other uses. Such as active coatings, adsorbents, catalysts and catalyst carriers, vacuum coating, special glass raw materials, composite materials, bioceramics, etc.

The impact of high-purity alumina quality indicators on the application:

1. Particle size distribution of alumina

2. The content of impurities and trace elements

3. Moisture index of alumina

4. Particle morphology of alumina