1.Material characteristics

Ingredients and Purity:

The alumina content is usually 92%, 95%, 99% or above, and the higher the purity, the stronger the hardness and wear resistance.

Low content of impurities (such as SiO ₂, Fe ₂ O3) to avoid contaminating the ground material.

physical property:

Hardness: Mohs hardness of 9, second only to diamond, suitable for grinding high hardness materials.

Density: 3.6-3.9 g/cm ³ (high purity), high density can improve grinding efficiency.

High temperature resistance: It can withstand a high temperature of 1600 ° C for a long time and is suitable for high temperature environments.

Chemical stability:

Resistant to acid and alkali corrosion (except hydrofluoric acid and strong alkali), suitable for sensitive industries such as chemical and electronics.

2.Production process

Raw material processing: high-purity alumina powder mixed with binder (such as polyvinyl alcohol).

Molding process:

Isostatic pressure forming: Pressing a spherical shape under high pressure, resulting in a dense structure and reduced porosity.

Roll forming: suitable for small batch or special size production.

Sintering: High temperature sintering at 1600-1700 ° C to form high hardness α - Al ₂ O3 phase.

Quality inspection: Testing roundness (± 0.5mm), compressive strength (≥ 300 MPa), and wear rate.

3.Main application areas

Mining: Crushing metal ores (such as gold and copper) to improve beneficiation efficiency.

Building materials: Fine grinding of cement and ceramic raw materials.

Electronic materials: Preparation of ultrafine powders such as lithium battery positive and negative electrode materials and fluorescent powders.

Chemical/Pharmaceutical: Non polluting grinding of pigments, catalysts, and pharmaceutical raw materials.

Environmental protection: Resource utilization and treatment of industrial waste (such as fly ash).