The difference between high alumina bricks and low creep high alumina bricks

　　high alumina bricks and low creep high alumina bricks are two different refractory materials. The main difference between high alumina bricks and low creep high alumina bricks lies in the creep properties. When selecting and applying, it is necessary to make a reasonable choice based on the actual situation and requirements. If it needs to be used under higher temperature and pressure conditions, you can choose low creep high alumina bricks; if the usage conditions are more general, you can choose ordinary high alumina bricks. The specific situation needs to be comprehensively considered based on the use occasion and requirements.

　　1. Differences in raw material ingredients

　　The main raw material of high alumina bricks is aluminum-containing minerals, such as kaolin, diaspore, etc., with an aluminum content of more than 55%, and has good fire resistance and chemical stability.

　　Low creep high alumina bricks are improved on the basis of high alumina bricks, and a small amount of magnesium, calcium, rare earth elements, etc. are added to the original formula to enhance its creep resistance. Rare earth elements and other additives can improve the temperature resistance and mechanical strength of low-creep high-alumina bricks.

　　2. The difference in creep performance

　　High-alumina bricks have poor creep properties and are prone to plastic deformation due to pressure at high temperatures for a long time, leading to structural failure.

　　Low creep high alumina bricks improve their creep properties by adding rare earth elements or other additives, giving them higher temperature resistance and creep resistance. In high temperature and high pressure environments, low creep high alumina bricks are more stable and durable than ordinary high alumina bricks.

　　3. Differences in application situations

　　High alumina bricks are widely used in various high temperature environments, such as steel, cement, ceramics and other industrial kilns due to their excellent resistance to chemical corrosion, wear resistance and erosion resistance. It can also be used for heat insulation and thermal insulation of buildings.

　　Low-creep high-alumina bricks are more suitable for use in high-temperature and high-pressure environments due to their better creep resistance, such as high-temperature reactors, hydrogenation reactors, catalytic cracking units and other equipment in metallurgy, petrochemical, electric power and other industries. And it can also be used in the production of glass, ceramics and other industries.