Tabular alumina is an excellent synthetic refractory material

Tabular alumina is widely used in high-performance refractory materials in the fields of steel, foundry, petrochemical, breathable brick, ladle lining, castable, prefabricated parts, ceramics, etc. It is an excellent synthetic refractory raw material. High refractoriness, high hardness, good thermal shock stability, good corrosion resistance and wear resistance, and stable performance.

1. Sliding nozzle

Good thermal shock stability and wear resistance are the requirements for refractory materials for sliding nozzles. The sintered tabular corundum can just meet its requirements. At present, adding appropriate amount of graphite (or carbon black) and antioxidants to the sintered tabular alumina as the basic material of aluminum-carbon sliding nozzles, or adding appropriate amounts of zirconia, graphite (or carbon black) and antioxidants to tabular corundum is: The basic material of aluminum-zirconium-carbon sliding nozzle is still the main body of domestic sliding nozzle material.

2. Ladle castables

With the continuous development of out-of-furnace refining technology, the use environment of refractory materials in ladle is becoming more and more severe. The molten steel needs to stay in the ladle for a longer time for stirring, heating and erosion of different slag. Single materials such as magnesium or aluminum lining the ladle have been replaced by composite materials. The aluminum-spinel system castables with sintered tabular corundum and spinel as the main materials are used for the bottom or wall of the cladding, and magnesia-carbon bricks are used for the slag line.

3. Prefabs

Prefabricated parts such as: breathable bricks, seat bricks, spray guns, impact plates, etc. are not only part of the refractory lining of the ladle, but also play a very important role in the steelmaking process itself. The composite use of sintered tabular corundum, spinel and other refractory raw materials can more effectively improve the thermodynamic properties of refractory materials, that is, improve wear resistance and erosion resistance.