Because of its excellent performance and flexible construction method, amorphous refractories have been widely used in industrial fields, especially in metallurgy, building materials, chemical industry and other industries. The following are the main application fields and advantages of unshaped refractories:

I. Application fields of unshaped refractories

metallurgical industry

Blast furnace: Blast furnace lining is an important application field of unshaped refractories. For example, the hearth of blast furnace is made of silicon carbide castable, which has good thermal conductivity and corrosion resistance. In addition, the hot surface of blast furnace cooling stave adopts pouring technology, which can improve the service life of cooling stave.

Ladle and ladle: unshaped refractory materials, such as Al₂O₃- spinel castable, are often used on the side wall and bottom of ladle, which has good corrosion resistance and high temperature stability.

Heating furnace: The top and lining of the heating furnace can be made of castable or plastic refractory, which has good high temperature performance and long service life.

Building materials industry

Cement rotary kiln: Low cement castable is often used in preheater and cooler of rotary kiln, which has high strength and good corrosion resistance.

Glass kiln: unshaped refractory materials, such as high-alumina castable, can be used for the furnace body and pool wall of glass kiln, which can withstand high temperature and chemical erosion.

Chemical industry

Cracking furnace and fertilizer furnace: The lining of these devices often uses unshaped refractory materials, which has good chemical corrosion resistance.

power industry

Boilers and gas turbines: amorphous refractory materials, such as light castable, are often used for high-temperature parts of these equipment, which have good heat insulation performance.

II. Advantages of unshaped refractories

Convenient construction: the unshaped refractory is cast and molded on site, without high temperature firing, and the construction speed is fast, which can significantly shorten the shutdown period of the kiln.

High strength and high fire resistance: after curing and drying, it has high strength at room temperature and high temperature, and the fire resistance is generally above 1500℃.

Good corrosion resistance: it can resist the chemical corrosion of slag and gas, and prolong the service life of the equipment.

Good thermal stability: it is not easy to crack and peel at high temperature, and has good thermal shock resistance.

Energy-saving and environmental protection: it saves the firing process and avoids a lot of energy waste, which conforms to the green, low-carbon and environmental protection production concept.

III. Development trend of unshaped refractories

With the continuous progress of technology, the application scope of unshaped refractories will be further expanded. For example, the development of new low cement castable, ultra-low cement castable and self-flowing castable has further improved the properties of unshaped refractories. In addition, the development of prefabrication technology also provides more convenience for the construction of unshaped refractories.

In a word, unshaped refractory plays an important role in industrial high-temperature equipment with its excellent performance and flexible construction method, and its application prospect will be broader with the continuous innovation of technology.