Learn more about furnace bricks: basic concepts, uses and purchasing guide

What are furnace bricks?

Furnace bricks are refractory materials specially used in high temperature environments. They are widely used in metallurgy, chemical industry, glass and other industries as the lining of high temperature furnaces.

The main purpose of furnace bricks

The main uses of furnace bricks include:

• Protect the furnace structure and extend the service life of the equipment
• Improve the temperature uniformity in the furnace and optimize the production process
• Reduce heat loss and improve energy utilization

Different types of furnace bricks

There are many types of furnace bricks, which can be divided into the following categories according to their materials and uses:

• Clay furnace bricks: suitable for medium high temperature environments, with good thermal stability and balance.
• High alumina furnace bricks: suitable for high temperature environment, with strong wear resistance and corrosion resistance.
• Silica furnace bricks: suitable for extremely high temperature environments, high thermal shock resistance and corrosion resistance.

Choose the right furnace brick material

When choosing furnace brick materials, you need to consider the following factors:

• Working temperature: The refractoriness of the material should be 20-30℃ higher than the use temperature.
• Chemical corrosion: It is necessary to select materials that can resist corrosion from raw materials and products during the production process.
• Mechanical strength: resistance to compression and flexure at high temperatures.
• Thermal shock stability: Resistance to cracking after repeated heating and cooling.

Maintenance and replacement of furnace bricks

During the use of furnace bricks, regular maintenance and timely replacement are essential:

• Regular inspection: Carry out a comprehensive inspection of the furnace bricks every 6 months and repair any cracks or damage in time.
• Cleaning and maintenance: Regularly clean the slag and impurities on the surface of the furnace bricks to avoid affecting their performance.
• Timely replacement: When the thickness of furnace bricks decreases by more than 30%, they should be replaced immediately to ensure the safety of the furnace body.

Summarize

Through this article, you should have a deeper understanding of the definition, use, types, and how to choose and maintain furnace bricks. Reasonable selection and maintenance of furnace bricks can not only extend the service life of equipment, but also improve production efficiency and product quality, thereby bringing greater economic benefits to the enterprise.