How to classify brown corundum according to the number of meshes


Date & time Jan 14
Creator Carrie Ge

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Carrie  Ge


Brown corundum products are made of high-quality raw materials through rigorous processing and high-temperature smelting to produce high purity, dense texture, high hardness, and stable chemical properties; according to the particle size and number of meshes, they are divided into three categories: coarse mesh, medium mesh, and fine mesh. aluminium oxide The coarse mesh is black. Red, medium mesh is light red, fine mesh is reddish white, uniform particle size of various meshes, uniform particle shape, angular crystals, sharp edges, and high grinding power.


The raw brown fused alumina is crushed and screened by a crusher, and then mixed with anthracite and iron filings. It is smelted at a high temperature of over 2000 degrees in an electric arc. The iron is removed by magnetic separation to achieve the unique low iron content of brown fused alumina.

Finally, it is divided into different particle sizes and meshes by self-milling and shaping screen. Generally, it is divided into three categories: coarse mesh, medium mesh and fine mesh. The particle size 4-220 mesh mainly adopts the sieving method; 230-1500 mesh uses the airflow method.


The common characteristics of brown corundum in the three categories are high hardness, high specific gravity, stable chemical properties, and unique self-sharpening properties. It has become the first choice for abrasives for sandblasting; coarse meshes are mainly used for grinding marble and other materials in the stone industry. hsl abrasive  Used in grinding glass burrs, television picture tubes, optical equipment, lenses, prisms, glass for clocks, etc. Details are mainly used in metal industry sandblasting, rust removal, and grinding.


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