High alumina brick refers to fire brick containing Al2O3 more than 48%, which is made of high grade bauxite through high temperature calcinations...
Feature
1. Strong volume stability at high temperatures
2. Good thermal shock resistant
3. Wear resistance
4. Chemical corrosion resistance
Advantages
First: Two production factory;
Second: The annual output of 180,000 ton refractory products;
Third: The annual output value reached 350million yuan;
Fourth: Specialized in this field for 27 years
Finally: Obtained IS09001:2000, ISO14001 and GB 28001 Certification.
Physical and chemical indexes
|
Item |
LZ-75 |
LZ-65 |
LZ-55 |
LZ-48 |
|
Al2O3 % |
≥75 |
≥65 |
≥55 |
≥48 |
|
Cold crushing strength ,MPa |
≥54 |
≥49 |
≥44 |
≥40 |
|
Apparent porosity ,% |
≤23 |
≤23 |
≤22 |
≤22 |
|
Refractoriness under load , °C |
≥1520 |
≥1500 |
≥1470 |
≥1420 |
|
Reheating linear change (1500°C,2h) % |
+0.1-0.4 |
+0.1-0.4 |
+0.1-0.4 |
(1450°C,2h)+0.1-0.4 |
|
Refractoriness °C |
>1790 |
>1790 |
>1770 |
>1750 |
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