Dense firebrick is a type of refractory material designed to withstand high temperatures and thermal shock. It is commonly used in applications such as kilns, furnaces, and fireplaces due to its excellent insulating properties and durability. Made from a mixture of clay and other minerals, dense firebrick can endure extreme heat without cracking or breaking. These bricks are characterized by their high density, which contributes to their strength and resistance to wear. They are often used in industrial settings, such as in the construction of steel mills and ceramic kilns, where maintaining high temperatures is essential for efficient operation.