Electro Corundum Furnace
An ELECTRO CORUNDUM FURNACE is an Electric Arc Furnace used to produce corundum, a crystalline form of Aluminium Oxide (Al₂O₃), through the melting of alumina at very high temperatures (above 2000°C). The process results in a high-purity, white, and very hard abrasive material, also known as White Fused Alumina or White Corundum. The furnace includes various mechanical, hydraulic, and cooling systems to ensure safe and efficient operation. Accurate control over the fusion process is essential to ensure the purity and quality of the final corundum product.
These furnaces are crucial for manufacturing abrasives and high-performance refractory materials :
- Corundum is a naturally occurring mineral, but it can also be produced synthetically in electric arc furnaces.
- White fused alumina (or white corundum) is a specific type of synthetic corundum with high purity and whiteness, made by melting high-purity alumina.
- It’s characterized by its high hardness, excellent self-sharpening properties, and good thermal stability
The furnace uses high-voltage electricity to create an arc between electrodes, generating extremely high temperatures (above 2000°C) needed to melt the alumina.
The furnace is charged with controlled quality alumina, and the molten corundum is then discharged through a specific system.
After melting, the molten corundum is carefully cooled and solidified to form a solid block, which is then processed into different sizes and shapes for various applications.
White fused alumina is widely used in abrasives such as grinding wheels, abrasive paper, and sandblasting.
It’s a key component in the production of both shaped and unshaped refractory materials used in high-temperature industrial furnaces, kiln linings, and other demanding applications.
It can also be found in specialized applications like refractory bricks, ceramic grinding wheels, and as a component in some types of cement.