Anchor bricks are specially shaped bricks used in refractory masonry that have a structural design that allows the anchors to nest into each other. The use of anchor bricks contributes to the stability and overall strength of the masonry structure, especially in harsh environments such as high temperatures and vibrations. They are commonly used in refractory masonry for high-temperature equipment, industrial furnaces, metallurgical furnaces, glass kilns and more.
Anchor brick is a refractory brick for heating furnace, because of its alumina content of more than 55%, anchor brick is also known as high alumina anchor brick. Anchor bricks are mainly used to connect and support the structure of refractory bricks and ordinary sintered bricks, which are used in the roof wall or other parts of the heating furnace. The use of anchor bricks in harsh environments such as high temperatures and vibration helps to improve the stability and overall strength of the masonry structure.
Anchor brick is a shaped high alumina refractory brick made by selecting natural high grade bauxite as the main refractory raw material, adding soft or semi soft clay as binding agent in high alumina clinker to start batching, mixing, then molding, drying, and finally firing.
Fireramo produces three types of high alumina anchored bricks: LM-55, LM-65 and LM-75. We can also customize the anchored bricks according to customers’ requirements. The load softening temperature of high alumina anchored bricks reaches 1550℃, which can meet the performance requirements of heating furnace roof lining.
Anchor bricks are designed with anchor teeth and anchor grooves, which allow for a more solid structural connection to be formed through the embedding of the anchor teeth and anchor grooves. This connection effectively reduces voids in the masonry and improves the overall structural stability and strength.
Anchor bricks are usually manufactured using refractory materials such as high alumina materials. These materials have excellent resistance to high temperatures and are able to maintain structural integrity and stability in high temperature environments. Anchor bricks are able to resist refractory stresses such as high temperature erosion, thermal shock and thermal cycling.
Anchor bricks provide better seismic performance due to the way they are structurally connected. The embedment of the anchor teeth and anchor grooves makes the masonry structure stronger and more resistant to vibration and impact forces, improving overall structural stability.
The design of the anchor blocks makes them easier to nest and secure during installation. The shape of the anchor teeth and grooves makes masonry work easier and more efficient, reducing construction time and costs.
The structural design of anchor bricks controls heat transfer and reduces heat transfer in the masonry, thereby improving the thermal effect and energy efficiency of the masonry system.
High-alumina anchor bricks have good erosion resistance and are able to resist the erosion of various chemicals, thus maintaining long-term stability and durability.
High-alumina anchoring bricks have a high load softening temperature and can withstand large pressure and weight at high temperatures, making them suitable for fixing all kinds of heavy equipment.
High-alumina anchoring bricks have good resistance to spalling, and can maintain the fixing effect under high-temperature environment, which is suitable for various industrial furnaces, kilns, heating equipment and other occasions that need to fix objects.
The structure of high alumina anchoring brick is characterized by placing the anchors in the center of the brick to form a composite structure, which makes the anchoring force more evenly distributed. This structure can improve the fixing effect and service life of the anchoring bricks.
Anchor bricks are widely used in metallurgical equipment, such as smelting furnaces, converters, electric furnaces and coal gasifiers. They can withstand thermal shock and chemical corrosion at high temperatures and provide structural stability and durability.
Anchor bricks are widely used in melting furnaces and glass kilns in the glass manufacturing process. They are able to withstand the erosion of high temperature glass liquids and provide stable refractory protection.
Anchor bricks are used for lining equipment such as ceramic kilns and sintering furnaces. They withstand thermal cycling and chemical attack at high temperatures and provide insulation and protection.
Anchor bricks are used in chemical equipment such as chemical reactors, furnaces, chimneys and heat exchangers. They are able to withstand corrosive media such as acids and alkalis and provide excellent refractory properties.
Anchor bricks are used in liquid aluminum handling equipment such as liquid aluminum stirred furnaces, liquid aluminum cladding furnaces and liquid aluminum stirred cladding furnaces. They are able to withstand aluminum liquid erosion and mechanical stress at high temperatures.
Anchor bricks are widely used in high-temperature heating equipment, such as high-temperature resistance furnaces, high-temperature kilns and high-temperature heating furnaces. They are able to withstand high-temperature environments and provide a stable refractory lining.
Anchor bricks are used in steel smelting equipment such as converters, electric furnaces and blast furnaces. They are able to withstand thermal shock and chemical attack at high temperatures and protect the structure of the equipment from damage.
Anchor bricks are used in equipment such as boilers and chimneys in power plants. They provide refractory protection against high temperature combustion gases and chemical attack.
|Al2O3 ( %)||≥55||≥65||≥75|
|Cold Crushing Strength(MPa)||≥50||≥50||≥55|
|Modulus of Rapture(MPa)||≥3.8||≥4.0||≥4.2|
|0.2MPa Refractoriness Under Load(℃)||≥1450||≥1500||≥1520|
|Permanent Linear Change||-0.4~+0.2||-0.3~+0.2||-0.3~+D100.2|
Raw material preparation: the main raw materials are kaolin (clay with high Al2O3 content), high purity alumina powder and so on. These raw materials need to be calcined at high temperature, then crushed, picked to remove impurities, and then polished into fine powder.
Batching: the calcined raw materials are batching according to a certain proportion.
Mixing and trapping: The matched raw materials are mixed in a mixer to form a uniform slurry, and then trapped in a trapping machine to keep the moisture.
Forming: The trapped material is put into the mold and pressed by the press to form the desired shape.
Drying: The molded bricks are put into the tunnel kiln for drying in the low-temperature preheating section.
Sintering: The dried bricks enter the high-temperature calcining zone for sintering, the sintering temperature is generally 1400-1500℃, even up to 1700 degrees. It takes at least 120 hours from preheating to calcining.
Inspection and Packing: Finally, the sintered high alumina anchored bricks are inspected for quality and packed into storage.
Specializing in refractory materials for over 20 years, we provide professional refractory solutions for the global high temperature industry.