Calcined Alumina (Alpha) Production

Calcined alumina, aluminum oxide, is a widely used ceramic material and has mechanical properties such as good compressive strength and high hardness. It is also resistant to high temperatures, which makes it suitable as a refractory material. The high hardness of alumina makes it resistant to wear. Therefore, it is used in various cases, such as erosion-resistant coatings for pipes, ducts, pumps and valves, and sheaths for fibers, wires, etc. Alumina is used as a metal cutting tool tip due to its high hardness at high temperatures. Alumina is also the most widely used abrasive, which is generally used for ferrous alloys, high-tensile materials, and wood. Alumina is also used as a grinding material in a wide range of particle size reduction processes.

According to official statistics, only the consumption of refractory materials in the production units and factories covered by the Iranian Mines & Mining Industries Development & Renovation is more than 500 thousand tons per year, among which, on average, 20% of the refractory materials consumed are alumina materials, which is equivalent to 100 thousand tons per year. Currently, Iran’s steel industry is the main consumer of these materials with 65%, followed by cement industries with 8%, petrochemical industries with 7%, non-ferrous metal production industries with 6%, ceramic industries with 5%, and other industries with 10%.