According to the application, it is a problem to choose suitable brown aluminum oxide

1：Brown aluminum oxide is made of bauxite, coke and anthracite by continuous melting at high temperature. It with less impurities, high purity, good crystal quality, not easy to break, degree of firmness and improve friction and other characteristics.

2：Application:

Brown aluminum oxide is mainly used as abrasives manufacture、refractory material and sandblasting service.

3：Quality distinguish：

①.The most direct way to judge the quality of brown aluminum oxide is based on its Al2O3 content. The more Al2O3, the higher the quality.

Mainly divided into three grades: first grade95%、sub-first grade92%、second first85% and third grade75%.

②.The brown aluminum oxide is dark purple in color. In sunlight, it has high transparency, light transmission and brightness. This one has slightly higher hardness, higher wear resistance and higher Al2O3 content.

Notice!  Dark, light-colored and opaque brown corundum abrasives are of poor quality and consume a lot when used.

③.Brown aluminum oxide usually has good self-sharpening and toughness, a good brown aluminum oxide depends on its original mineral content. Usually, good main minerals are mainly spherical small particles with small particle size, strong impact resistance and smooth and bright surface.

4：Fixed furnace or titling furnace

①. The characteristics of brown aluminum oxide smelted in a titling furnace are that the crystal volume is large, the crystal block volume is small, and the glass quality is high, so the relative toughness is relatively poor, and the brittleness is improved to a certain extent. Brown corundum smelted by this method is suitable for resin abrasives and refractory materials.

②. The brown alumina oxide smelted with a fixed furnace has a small crystal volume, a large crystal block and less glass. The brittleness is poor but the toughness is good, and the wear resistance is not small. This method is suitable for the manufacture of vitrified abrasive .

When users choose brown corundum products, they can choose different grades of products according to the actual use field and expected effect, so as to make more use of products and use them reasonably

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