The maximum service temperature and service life of high-alumina bricks are affected by many factors. The following is a summary of relevant information:

I. Maximum service temperature

Ordinary high-alumina brick: the maximum service temperature is usually between 1550℃ and 1600℃. Long-term use temperature is generally not more than 1600℃, otherwise it may exceed its load softening temperature.

Super high-alumina brick: the fire resistance can reach above 1790℃, and the service temperature is above 1550℃.

High-alumina insulating brick: Long-term use temperature generally does not exceed 1350℃.

II. Service life

Generally speaking, the service life of high-alumina bricks is usually 2-3 years.

III. Specific applications:

In the firing zone of cement kiln, the service life of high alumina brick is generally 2-3 years.

In zinc smelting kiln, lime rotary kiln and other equipment, the service life of high alumina brick may be 3-5 years.

The service life of high-alumina brick can reach 2-5 years in the environment without erosion and wear in blast furnace.

IV. Influencing factors:

Temperature: Prolonged exposure to high temperature will accelerate aging.

Thermal shock: frequent temperature changes may lead to cracks.

Chemical attack: alkaline substances or corrosive substances will reduce durability.

Mechanical shock: External shock will shorten the service life.

Maintenance and maintenance: Regular maintenance can prolong the service life.

It should be noted that the actual service temperature and service life of high-alumina bricks will be different due to specific working conditions, material quality and maintenance measures.