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Our company owns over 10 tunnel kilns and 60 friction press machines. High alumina bricks of over SK35 contain over 45% alumina and are made from raw materials of unusually high degree of purity of the sintered alumina, bauxite and refractory clay. For serve under severe conditions, alumina bricks have excellent mechanical strength, good resistance to thermal spalling, and are highly resistant to chemical attack by vilatile alkaies and some slag. We manufacture and design alumina bricks to meet the requirements of a great variety of service conditions through quality control.
Specification:
|
Properties Brand |
LZ-80 |
LZ-75 |
LZ-65 |
LZ-55 |
LZ-48 |
|
Al2O3:% min |
80 |
75 |
65 |
55 |
48 |
|
Fe2O3:% max |
2.0 |
2.2 |
2.3 |
2.5 |
2.5 |
|
Classification Temp.℃ |
|
|
|
|
|
|
Bulk Density g/m3 |
2.6-2.7 |
2.4-2.5 |
2.3-2.4 |
2.3-2.4 |
2.2-2.3 |
|
Apparent strength MPa max |
22 |
23 |
23 |
22 |
22 |
|
Cold Crushing Strength MPa |
55 |
50 |
45 |
40 |
35 |
|
Thermal Linear Expansion %@1000℃ |
0.6-0.8 |
0.6-0.8 |
0.6-0.7 |
0.6-0.8 |
0.5-0.7 |
|
Permanent Linear Change%@ |
1500℃*2hrs +0.1~-0.4 |
1500℃*2hrs +0.1~-0.4 |
1500℃*2hrs +0.1~-0.4 |
1450℃*2hrs +0.1~-0.4 |
1450℃*2hrs +0.1~-0.4 |
|
Refractoriness under load(2kg/PT2 ℃) |
1530 |
1520 |
1500 |
1470 |
1450 |
|
Main Application |
Nonferrous Metal Furnace, Rotary&Shaft Kiln, Various inclinerator, Reheating Furnace, Permanent Lining for EAF Ladle, General Industrial Furnace, etc. | ||||
