Fire Clay bricks are the basic refractory bricks with low alumina content (Al2O3). it can withstand moderate to high temperature depending on the grade
Acid proof bricks are chemical resistant & thermally durable.They are made from high silica shale & fired at higher temperatures than conventional brick.
Chrome magnesite is made from a mixture of chromite & roasted magnesite. CHM has strong Basic Slag Erosion Resistance and good Thermal Shock Resistance.