Clay bricks are made of 50% soft clay and 50% hard clay clinker, which are batched according to certain particle size requirements. After molding and drying, they are fired at a high temperature of 1300～1400℃. Fireclay bricks are weakly acidic refractory products, which can resist the erosion of acidic slag and acid gas, and have a slightly weaker resistance to alkaline substances, good thermal performance, and resistance to rapid cold and heat
Clay bricks are one of the main varieties of silica-alumina series products. They are refractory products with 30-48% Al2O3 content made of clay clinker as aggregate and refractory clay as binder.