Industry Definition and Application Analysis of Aluminum Oxide

With the rapid development of China's electrolytic aluminum, ceramic, medicine, electronics, machinery and other industries, the market demand for aluminum oxide still has larger growth space, and the production of aluminum  oxide will continue to be growing. What follows in the passage is industry definition and application analysis of of Aluminum Oxide from China Reports Hall.

Aluminum oxide are divided into calcined alumina and ordinary industrial alumina. Calcined alumina is the essential raw material in the production of archaize brick, while industrial alumina can be used in the production of microcrystalline. In the traditional glaze materials, aluminum oxide is commonly used for whitening. As a result of archaize brick and microcrystalline favored by the market, the demand for aluminum oxide is also increased year by year.

Therefore, aluminum oxide ceramic emerges at the right moment in ceramic industry. Aluminum oxide ceramic is a kind of ceramic material that uses Al₂O₃ as the main raw material and corundum as crystal phase, so it has many advantages, such as high mechanical strength, high hardness, low dielectric loss at high frequency, high temperature and high insulation resistance, chemical corrosion resistance and good thermal conductivity and other excellent comprehensive technical performance advantages.　

The Application of Aluminum Oxide

A. The main ingredients of ruby and sapphire is aluminum  oxide. Different impurities in them will present different color and luster, and sapphire containing iron oxide and titanium oxide shows in blue.

B. In the principal component of aluminum ore-bauxite, aluminum oxide has the highest content. In the industry, bauxite is processed into aluminum oxide by Bayer process purification, and again processed into aluminum metal by Hall-Heroult process.

C. Aluminum reacts with oxygen in the air, which produces a dense layer of aluminum oxide film covering the surface of aluminum exposed to the air.

D. Aluminum is a good conductor of electricity and heat. Aluminum oxide crystal has high hardness that is suitable for grinding materials and cutting tools.

E. Aluminum oxide powder is commonly used as the intermedium in the chromatographic analysis.

F. In august of 2004, scientists of 3M company in the United States developed tempered glass made of alloy that is synthesized by aluminum and rare earth elements. It is also called transparent alumina.