How is White Corundum Produced in Refractory Materials?

White corundum is a high-purity alumina ceramic material. Its production process usually includes the following steps:

Raw material preparation: Select high-purity alumina powder as raw material. These alumina powders are usually prepared by chemical methods, metallurgical methods, or high-temperature calcination methods.

Ingredients and Mixing: The selected alumina powders are mixed in specific recipe proportions. During the mixing process, some auxiliaries or additives, such as binders, thickeners, etc., can be added to improve the molding performance and processing performance of the material.

Molding: The mixed powder material is passed through a molding process, such as pressing, injection molding, or extrusion molding, to form a white corundum body with the required shape and size. The choice of molding method often depends on application requirements and product design.

Sintering: After the white corundum body is formed, it needs to be sintered at high temperatures. During the sintering process, the white corundum body is placed in a high-temperature environment, usually between 1900°C and 2200°C, for continuous heat treatment. During this process, alumina powder particles are combined and rearranged to form a dense structure.

Finishing and surface treatment: The sintered white corundum body can be finished and surface treated, such as cutting, grinding, polishing, etc., to obtain white corundum products.

It should be noted that the production process of white corundum may vary depending on the manufacturer, product specifications, and application areas. In addition, the production of white corundum often requires high-temperature environments and equipment to ensure the required high purity and material properties.