Kiln Brick

In ancient times, kilns were used to heat up clay to make pottery. Today, kilns are used to fire the bricks used in building. Kiln brick is made from a type of clay called soft clay. Soft clay can be formed into any shape, but it is usually fired in a kiln. The clay is heated to a temperature of 1,100 degrees Fahrenheit, and the heat causes the clay to break down into silica. The finished product is hard and porous. Kiln brick is typically used as a structural building material.