The main products are contents:mullite light-weight brick£¬high-temperature bonder and indeterminate from fireproofing material etc.
classification
Application:
Used for lining heat-protection material of industrial furnaces in industries such as metallurgy, petrochemical, magnetic materials, powder metallurgy, machinery and electron. etc
Feature:
Add composite binding agent based on the host materials alumina hollow ball and a-Al203, vibration and pressurization for molding, it is of high temperature of load soften-ing, small vibration burning wire, which is the ideal lining material of industrial furnace below 1800C
Physical and chemical indicators:
Name of commodity Performance and index |
Alumina hollow ball product | Alumina insu lat ing brick | ||
Bulk density £¨¡æ£© | 1£®2¡ª1£®5 | 1 | 1.2 | |
Compressive strength at ambient temp Mpa | 10 | 4 | 5 | |
Linear change on reheating ¡æ¡Áhr £¥ ¡Ü | 1800¡Á40.3 | 1650¡Á60.4 | 1650¡Á60.3 | |
Apparent porosity £¥ | 60-70 | ¡¡ | ¡¡ | |
A12O3£¥ ¡Ý | 98.5 | 88 | 92 | |
SiO2£¥ ¡Ü | 0.2 | ¡¡ | ¡¡ | |
Fe2O3 £¥ ¡Ü | 0.1 | 0.4 | 0.4 | |
Heat conductivity¡Ü350¡À20¡æw£¯m.k | 0.6-0.9 | 0.5 | 0.65 | |
Highest use temp ¡æ | 1800 | 1500 | 1550 | |
Load softening temp ¡æ | 1750 | ¡¡ | ¡¡ | |
Heat shock stability ¡æ£¯times | 1100 Air cooling£¾20 | ¡¡ | ¡¡ |
The actual parameters can be adjusted according to the requirements of users.