Unshaped refractories are widely used in building materials industry, especially in glass kilns and cement rotary kilns. The following are the specific applications:

I. Application in glass kiln

Glass production is a high-temperature operation, and the molten glass will corrode the refractories in the kiln pool, so the corrosion resistance and high-temperature performance of refractories are required. The application of unshaped refractories in glass kilns is gradually increasing, mainly in the following aspects:

Regenerator and Checked Brick Bottom Crown: In Britain, refractory concrete precast blocks are used to build regenerator, Checked Brick Bottom Crown, flue, small furnace supporting plate, burner and other parts, which greatly reduces the joints of kiln structure, improves the furnace building speed and shortens the cold repair time.

Bottom and wall of the pool: ERSOL series unshaped refractories from Xipu, France are used in the bottom of the pool together with fused bricks, which have excellent glass corrosion resistance and weak tendency to precipitate bubbles and form stones. In addition, unshaped refractories such as zircon ramming materials and zircon hot patching materials are also commonly used in the bottom and wall of the tank.

Thermal insulation: Thermal insulation material is an important part of glass kiln. Commonly used thermal insulation refractory materials include light insulating brick, thermal insulation board, thermal insulation (light) castable, thermal insulation coating and refractory fiber. These materials can effectively reduce energy consumption and improve the thermal efficiency of the kiln.

II. Application in cement rotary kiln

Cement rotary kiln is the key equipment in cement production, and unshaped refractories are also widely used in cement rotary kiln:

Kiln lining: The kiln lining of cement rotary kiln usually adopts unshaped refractory materials, such as high-alumina castable and corundum castable. These materials have good high temperature performance and wear resistance, and can effectively resist the erosion and wear of cement clinker.

Preheater and calciner: Preheater and calciner are important parts of cement rotary kiln, and their inner lining is usually made of alkali-resistant and wear-resistant clay brick, and is covered with heat insulation composite layer. In some parts, such as elbows, castable will also be used for pouring.

Cooler system: The refractory lining of grate cooler includes refractory bricks, light pouring bricks, insulating brick, heat insulation plates, etc. Ordinary chrome-magnesium bricks and high-purity high-alumina bricks can be used in high-temperature areas and blanking throat areas, while clay bricks can be used in medium-temperature and low-temperature areas.

The application of amorphous refractories in building materials industry not only improves the service life and operation efficiency of equipment, but also reduces energy consumption and maintenance cost, which is an important development direction of high-temperature equipment in building materials industry in the future.