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This relates to the use of key raw materials in fields such as grinding wheels, resin-bonded grinding wheels, sandblasting, and polishing pretreatment. As crucial raw materials, bulk buyers are primarily concerned with quantifiable performance, batch stability, and total cost.

For grinding wheels and abrasives (high removal), we generally recommend customers choose a mesh size range of 60#-120#, while for cutting discs, 30#, 36#, and 46# are more common. This is because the grain shape of brown fused alumina affects its self-sharpening and bonding, and BET (m²/g) affects its compatibility with binders.

Brown fused alumina products also boast excellent physical properties: true density ≈ 3.9–4.0 g/cm³; Mohs hardness ≈ 9, offering excellent value for money. Regarding durability, we also test the product's fracture attribution (%).

As the saying goes, every skill has its specialty. In the refractory materials field, brown fused alumina is generally used in refractory castables and self-leveling compounds, where its controlled particle size distribution improves flowability and densification. It is also used as aggregate in refractory brick/module fillers to enhance thermal shock resistance and wear resistance, and in furnace lining repair materials for localized repairs and enhanced slag resistance.

The process explanation for all this is that brown fused alumina is produced by high-temperature melting in an electric arc furnace followed by rapid cooling, resulting in dense and metastable corundum grains, which contribute to its high-temperature strength and thermal shock resistance.

Furthermore, the controllable sieving/gradation of brown fused aluminum oxide determines its porosity and heat conduction path, thus affecting the matching of billet shrinkage and thermal expansion. Its low soluble salt and low Fe content reduce chemical reactions with molten steel or slag, extending lining life.