What is a checker brick?

Checker brick is a special type of refractory brick that is used in regenerative heating systems, such as those found in glass and steel manufacturing processes. The purpose of checker bricks is to help regulate the flow of hot gases within the system by temporarily storing heat and then releasing it back into the process stream when needed.

Checker bricks are typically square in shape and have a series of holes or passages running through them. The hot gas stream flows through these passages, transferring heat energy to the bricks. As the bricks absorb heat, they become hot themselves and store the thermal energy. When the direction of the gas flow is reversed, the bricks release their stored heat back into the system, helping to maintain a consistent process temperature.

Checker bricks are typically made from a high-alumina refractory material, but other materials such as silica, magnesia, and zirconia may also be used depending on the specific requirements of the application. The design and size of checker bricks can vary widely depending on the specifics of the regenerative heating system and the process requirements.