Profile: B & B Refractory & Minerals is a supplier of a wide range of refractory scraps and minerals. Our refractory products & minerals include boiler bed materials, fire bricks, castables & mortors, fiber blankets and ACC blocks. Our boiler bed material is made from calcined clay. It is a perfect material for obtaining smooth and perfect fluidization in fluidized bed combustion boilers (FBC) and circulating fluidized bed combustion boilers (CFBC). Fire brick is a block of refractory ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. This brick is built primarily to withstand high temperature, and also have a low thermal conductivity for greater energy efficiency.