Lightweight thermal insulation bricks have become one of the important products for energy saving and environmental protection in industrial furnaces. We should choose the bricks according to the different temperatures of different parts of high temperature furnace and according to different material and physical and chemical properties of bricks. We should choose the right bricks. No compromise, no waste.
Ⅰ Light weight clay brick.
Lightweight clay bricks are generally used in the heat insulation of industrial furnaces in accordance with their performance characteristics, which can reduce heat loss in the kiln, save energy consumption, and reduce the weight of thermal equipment.
The advantages of lightweight clay bricks are: good performance and low price. Can be used in areas without strong high-temperature melting material erosion and scouring. Some surfaces that are in direct contact with the flame are coated with a fire-resistant coating to reduce eroded by slag and furnace gas dust and reduce damage. The working temperature is between 1200 °C ~ 1400 °C.
Ⅱ Light weight mullite brick
This kind of product can directly contact the flame, the refractoriness can reach above 1790°C, the maximum use temperature is 1350°C~1450°C.
It has the characteristics of high temperature resistance, high lightness, low thermal conductivity, significant energy saving effect, etc. Combined with the physical and chemical indicators of its lightweight mullite bricks, it is widely used in cracking furnaces, hot air furnaces, ceramic roller kiln, electric porcelain drawer kiln, and glass ware. And a variety of electric furnace lining.
Ⅲ Alumina hollow ball brick
Its main raw material is alumina hollow spheres and alumina powder, combined with other binders. Then fired at a high temperature of 1750 degrees. It is a kind of ultra-high temperature material energy-saving insulation material.
It is very stable in all kinds of atmospheres. Especially for high temperature furnaces at 1800 °C. Hollow balls can be used for high temperature, ultra-high temperature insulation fillers, high-temperature refractory concrete lightweight aggregates, high temperature castables, etc. Alumina hollow ball bricks are widely used in petrochemical industrial gasifiers, carbon black industrial reactors, metallurgical industrial induction electric furnaces and other high-temperature and ultra-high-temperature furnaces according to their physical and chemical indicators, and have achieved very good energy-saving effects.
