Fire Clay Brick
Fire Clay Brick
Fire clay brick is a refractory material that is used for various industrial applications. They are typically made of a blend of refractory clays that have been calcined and blended. These bricks have low porosity, excellent strength, and resistance to thermal shock. The fire clay brick is used in a number of applications such as furnace linings, ceramic blankets, and wood heaters. In addition to linings for furnaces, these bricks are used in petrochemical plants, glass plants, and non ferrous foundries.
Fire clay brick is a refractory type of material that contains alumina and silica. Generally, the proportion of alumina to silica in the fire clay bricks depends on the intended use. For refractory purposes, the alumina content should be between 18 and 25%. However, the amount of alumina can change during the cooking process.
Fire clay bricks are available in a variety of sizes. A typical brick is made from 50 to 75 percent silica, 20 to 40 percent alumina, and 5 to 10 percent water. Clay bricks are commonly used in hot blast furnaces, glass melting furnaces, and waste incinerators.
The fire clay brick can be classified into three categories, including low porosity, high duty, and super duty. Low duty bricks are usually made of one clay, while high duty and super duty bricks are typically a blend of refractory clays.
Typical fire bricks are pressed by a mechanically operated press or hydraulic press. They are a uniform rectangular shape. Their density is 30 to 35 N. These bricks can be fired at temperatures ranging from 1800 degrees Fahrenheit to 2500 degrees Fahrenheit. Depending on the application, the temperature of the firing can be adjusted.
Super duty and high duty bricks are pressed using a semi dry pressing method. This method improves their properties by reducing the moisture content. It is also helpful in controlling the shrinkage of the brick during the firing phase.
High duty and super duty bricks have a higher PCE value than low duty and medium duty bricks. A PCE value of 33 to 35 is ideal for these bricks. These bricks are also characterized by superior resistance to cracking and spalling during rapid temperature changes.
Although fire clay bricks are a weak acid refractory material, they are able to withstand heat for a long period of time. Their resistance to the acidic effects of weather and chemicals is also a major factor in their popularity. To increase their acid resistance, a small quantity of silica may be added.
Fire clay bricks can be located naturally in the earth. They are primarily used in linings of various industrial furnaces. Various types of fire boxes are also made from this material. You can purchase these bricks in the United States or Australia. Some stores also call them fireplace bricks.
If you are looking for a quality brick, you need to choose the one that has the right refractory properties. The alumina and silica content should be proportioned correctly. Also, the temperature of the firing must be appropriate for the purpose.
Tags:acid proof brick
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