Six Uses Of Alumina Powder

Alumina powder uses industrial aluminum hydroxide or industrial alumina as raw materials, but it is different from silicon carbide and black corundum in that alumina powder is made by high-temperature calcination with different formulas. Alumina powder is a white amorphous powder that is difficult to dissolve in water. It is odorless, tasteless, chemically stable, high in purity, high in specific gravity, and has good insulation properties.

Through the introduction of alumina powder, we can know some basic uses of alumina powder. Alumina powder is suitable for surface beautification of various high-end products, crafts or hardware products. After sandblasting, the surface is white and free of any impurities, eliminating the trouble of cleaning.

a. Ceramics

Like brown corundum, alumina powder can be divided into calcined alumina and ordinary industrial alumina when used as ceramics. Calcined alumina is a necessary raw material for the production of antique tiles, while industrial alumina can be used to produce microcrystalline stone. In traditional glazes, alumina is often used as a whitening raw material. Since antique bricks and microcrystalline stones are favored by the market, the amount of alumina used is also increasing year by year.

b. Medium

Alumina powder is often used as a medium for chromatographic analysis.

C. Manufacturing tempered glass

Alumina is the reason why metal aluminum is not easily corroded in the air. Pure metal aluminum easily reacts with oxygen in the air to form a thin layer of aluminum oxide film covering the aluminum surface exposed to the air.

d. α-type alumina

α-type alumina is insoluble in water and acid, and is also called aluminum oxide in industry, so it is also the basic raw material for manufacturing metal aluminum; it is also used to make various refractory bricks, refractory crucibles, refractory tubes, and high-temperature resistant experimental instruments; it can also be used as abrasives, flame retardants, fillers, etc.; high-purity α-type alumina is also the raw material for producing artificial corundum, artificial ruby and sapphire; it is also used to produce the substrate of modern large-scale integrated circuits.

e. γ-type alumina

In addition, it is a commonly used adsorbent, catalyst and catalyst carrier in petroleum refining and petrochemical industry; in industry, it is a deacidifier for transformer oil and turbine oil, and is also used for chromatography analysis, etc.

f. Abrasive alumina

Alumina is suitable for a variety of dry and wet processing processes, and can polish the rough surface of any workpiece finely. It is one of the most economical and affordable abrasives. This sharp and angular artificial abrasive has a hardness second only to diamond, and is especially suitable for use when there are strict requirements for iron pollution. In addition, the other uses of alumina powder are similar to those of white corundum.