Carolina Refractories is a distributor of all types of brick used in the refractory industry. Often used in high temperature applications, firebrick can be used as a lining or as a backup to monolithic refractories. Throughout the refractory industry there are several types of brick which fall under four main classes, which are classified as Basic, Fireclay, High Alumina and Silica.
Basic refractory brick is used to provide resistance to corrosive reactions and fluxing agents such as iron oxide. Several types of brick fall under the basic class with main raw materials consisting of magnesites, dolomite, chrome, and carbon.
Fireclay refractory brick are the most popular brick used in refractory applications. The four standard classes are composed of low-duty, medium duty, high duty, and super duty. Used throughout the industry, fireclay brick has good strength properties along with low thermal conductivity and resistance to thermal shock and abrasion.
High Alumina refractory brick are classified directly to the proportion of alumina content. These bricks are selected for use due to several features that differentiate them from other classes of brick. The major reason for selection of High Alumina brick comes from its use in extremely high temperatures. However, resistance to abrasion, spalling, and corrosion along with high strength also contribute to the advantages of High Alumina Firebrick.
Silica fire brick have a high refractoriness that allows the brick to perform at high temperatures with excellent strength properties. Silica brick are also essentially free of thermal spalling and have better thermal conductivity properties than fireclay brick.