The service life of refractory mortar in high temperature environment is affected by many factors, including its chemical composition, refractory temperature, construction quality and use environment. According to the search results, the following information is about the service life of refractory mortar in high temperature environment:

I. Fire resistance temperature and service life

The refractory temperature of refractory mortar is one of the key factors to determine its service life. For example, Weah WHMF series refractory mortar is divided into four grades: 1300℃, 1400℃, 1500℃ and 1700℃, and different grades of refractory mortar are suitable for different high temperature environments.

A kind of high-temperature refractory mastic has been tested in the high temperature environment of 1400℃ ~ 1500℃ for one year, and has no cracks or falls off, showing a long service life.

II. Chemical stability and corrosion resistance

High temperature refractory mortar usually has good chemical stability and corrosion resistance, which can resist the corrosion of chemical media in high temperature environment, thus prolonging its service life.

For example, some refractory mastics have micro-expansion characteristics at high temperature, which can effectively resist shrinkage and improve the softening temperature point of refractory mortar under high temperature load, thus maintaining good performance at high temperature.

III. Construction and environmental factors

The construction quality of refractory mortar also has an important influence on its service life. During construction, it is necessary to ensure that the surface is clean and dry, and it should be daubed and compacted in strict accordance with the requirements.

The frequency and amplitude of temperature change in the use environment will also affect the service life of refractory mortar. Frequent temperature changes may lead to thermal shock damage of refractory mortar.

IV. Service life in practical application

In practical application, the service life of refractory mortar varies with specific working conditions. For example, in industrial kilns, the service life of refractory mortar may range from several months to several years. Some high-strength refractory daubs show excellent performance in practical engineering, which can significantly prolong the service life of kiln.

To sum up, the service life of refractory mortar in high temperature environment depends on its refractory temperature, chemical stability, construction quality and use environment and other factors. By selecting suitable refractory mortar products and strictly following the requirements, a long service life can be achieved in high temperature environment.