In modern industrial production, industrial furnaces are the core equipment of many production processes, which run for a long time in high temperature environment and bear extreme heat load and chemical erosion. In order to ensure the stable operation and service life of the furnace, the application of refractory materials is very important, and refractory mortar, as a key component, plays an indispensable role.

I. Definition and classification of refractory mortar

Refractory cement is a special binder for building refractory materials such as refractory bricks and ceramic fiber products. It is usually composed of refractory powder, binder and additives, and has good high-temperature performance and construction performance. According to its main composition and performance characteristics, refractory mortar can be divided into many types, such as high-alumina cement-based refractory mortar, phosphate-bonded refractory mortar, water glass-bonded refractory mortar and so on. Among them, high alumina cement-based refractory mortar has been widely used in industrial furnaces because of its high strength and good corrosion resistance.

II. Performance characteristics of refractory mortar

High-temperature cohesiveness: Refractory mortar can maintain good cohesiveness in high-temperature environment, ensure the close combination of refractory materials such as refractory bricks and form a whole, and effectively prevent the loss of heat and the infiltration of medium in the furnace.

Corrosion resistance: in industrial furnaces, the medium in the furnace often has strong chemical activity, which will corrode refractories. Refractory cement has good corrosion resistance, which can resist the corrosion of acid, alkali and other media and prolong the service life of the furnace.

Fire resistance: The refractory mortar itself has a high fire resistance temperature, which can work stably in high temperature environment for a long time without melting and softening, thus ensuring the normal operation of the furnace.

Construction performance: The refractory mortar has good construction performance, which is easy to mix, smear and build, and can meet the masonry requirements of furnaces with different shapes and sizes and improve construction efficiency.

III. Application of refractory mortar

Refractory cement plays an important role in the masonry and maintenance of industrial furnaces. In the process of masonry, refractory mortar is used to fill the gaps between refractory bricks to ensure the close combination between bricks and form a complete refractory structure. At the same time, the refractory mortar can also be used to repair the local damaged parts of the inner wall of the furnace, such as cracks and peeling, and restore the fire resistance of the furnace. In addition, the refractory mortar can also be used for fixing and connecting ceramic fiber products, so as to improve the service effect and service life of ceramic fiber products.

IV. Development trend of refractory mortar

With the continuous development of industrial furnace technology and the improvement of furnace performance requirements, refractory mortar is also constantly improving and innovating. On the one hand, by optimizing the formula and production process of refractory mortar, its high temperature performance and corrosion resistance are improved to meet the requirements of higher temperature and worse environment; On the other hand, we should develop new types of refractory mortar, such as self-leveling refractory mortar and rapid curing refractory mortar, so as to improve the construction efficiency and quality.

As an important part of refractory materials, refractory mortar plays a key role in the operation of industrial furnaces. With the continuous progress and innovation of technology, the performance of refractory mortar will be continuously improved, and the application scope will be further expanded, which will provide a strong guarantee for the efficient operation and energy saving of industrial furnaces.