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Corundum Castable

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Product:  Corundum Castable

Category:  castable

Application: petroleum, chemical, non-ferrous metals, and other industries

Item Code: A4302

What is corundum castable?

Corundum castable is a kind of monolithic refractory made of corundum aggregate, corundum powder, and some binding agents. Compared to high alumina castable and mullite castable, it has higher mechanical strength and wear resistance but relatively low thermal shock resistance.

Application of corundum castable

Corundum castable is primarily used as the lining material for various industrial furnaces, such as boilers, blast furnaces, hot blast furnaces, heating furnaces, ceramic ovens, etc. In the glass furnace, it is mainly applied to high-temperature areas such as the flame zone, tuck stone, port structure, and end wall.

Advantages of corundum castable

High strength, high softening temperature under load, and good slag resistance and wear resistance. It has little pollution in glass products and exhibits good plasticity in construction.

Instructions for the use of corundum castables

Corundum castables should be mixed with a forced mixer, and the construction temperature should be controlled at 5°C to 40°C. Put the castables and binder into a mixer and stir evenly, then add water and stir for about 5 minutes to make the material consistent in color before use. During construction, a vibrator must be used to vibrate the pouring, and manual tamping construction is not allowed.

Physical And Chemical Indicators of corundum castable

PerformanceItemIndicator
Chemical composition after calcination (%)SiO29.5-14.0
Al2O385.0-95.0
Alkalis<0.4
CaO<0.4
Fe2O3<0.4
TiO2<0.4
Physical propertiesAP(%)14-17
BD(g/cm3)2.8-2.93
CCS(Mpa) 816℃ 1400℃46.5-57.4 96.1-113.0
Applied limit temperature ℃1790
Linear change on reheating (%)-0.1至0.1
Water content(%)0

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