Alumina Ceramic Fiber Board
Introduction
NC Fiber Board is made of shattered cotton compressed together using inorganic adhesives by the wet vacuum suction filter process. With such advantages as low density and high intensity, the product has a wide range of applications, like as the hot surface of furnace lining to withstand the direct impact of flames and high-temperature gas glows.
Characteristics
High stability;
Low thermal conductivity;
Low thermal capacity;
Resistance to thermal shock;
Resistance to erosion;
Easy to process and cut;
High thickness precision and size precision;
Exceptional ability to withstand flames and gas flows;
Easy to install and convenient to use.
Application
Product parameter
|
Fiber Board |
NC1260 |
NC1350 |
NC1400 |
NC1430 |
NC1600 |
NC1700 |
NC1800 |
|
|
Classification Temperature(℃) |
1260 |
1350 |
1400 |
1430 |
1600 |
1700 |
1800 |
|
|
Density(KG/M³) |
300-600 |
300-600 |
300-600 |
300-600 |
300-600 |
450-700 |
450-700 |
|
|
Reheating Linearchange(%)(24H) |
≤1.5(1050℃ |
≤2.0(1100℃) |
≤3.0(1200℃ |
3.0(1250℃) |
≤1.0(1450℃) |
≤1.0(1500℃) |
≤1.0(1600℃) |
|
|
Flexural Strength(MPa) |
≥0.5 |
≥0.5 |
≥0.5 |
≥0.5 |
≥0.7 |
≥0.7 |
≥0.7 |
|
|
Lol |
≤5 |
≤5 |
≤5 |
≤5 |
≤6 |
≤6 |
≤6 |
|
|
Thermal Conductivity |
400℃ |
0.084 |
0.084 |
0.084 |
0.084 |
|
|
|
|
800℃ |
0.128 |
0.125 |
0.125 |
0.125 |
0.16 |
0.16 |
0.16 |
|
|
1000℃ |
0.176 |
0.174 |
0.174 |
0.2 |
0.21 |
0.21 |
0.21 |
|
|
|
Al₂O₃ |
45-49 |
52-55 |
54-57 |
44-48 |
72 |
78 |
83 |
|
Al₂O₃+SiO₂ |
98 |
99 |
99 |
82 |
99 |
99 |
99 |
|
|
ZrO₃ |
|
|
|
15-17 |
|
|
|
|
|
Other |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
|
Note: The technical data determined by the testing standards used will, on average, fluctuate within a certain range; the data do not represent the product quality assurance data.

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A furnace lining rarely fails because the furnace reached an impossible temperature. It usually fails because the refractory material was selected for the wrong mix of heat, chemistry, load, and thermal cycling. The symptoms are familiar: spalling on the hot face, open joints, corroded anchors, and a shell that quietly consumes gas or electricity for months. Short answer: choose furnace refractory material by failure mode first, temperature second, and price third. Ceramic fiber and lightweigh...




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