The fireproof refractory brick is a manufactured product used for the construction of fireplaces and furnaces. These bricks are usually made from clay, quartz, or silicon carbide, and are then baked at a high temperature for a long period of time. These bricks are typically used to protect the surface of a furnace or fireplace from heat damage, to protect the interior of the furnace or fireplace from heat, and to conduct heat from the furnace or fireplace.