Insulating refractory material Castables are lightweight refractory materials designed to provide excellent thermal insulation and energy efficiency in high-temperature industrial applications. Made from high-quality raw materials such as alumina, silica, and lightweight aggregates, these castables are ideal for reducing heat loss, improving thermal management, and enhancing the overall efficiency of industrial furnaces and equipment.
Product Parameters
Brand Properties |
LWC-170 |
LWC-160 |
LWC-150 |
LWC-140 |
LWC-130 |
LWC-120 |
|
℃ Application Limit Temp |
1,700 |
1,600 |
1,500 |
1,400 |
1,200 |
1,100 |
|
Bulk Density (g/cm3) |
1.45 |
1.50 |
1.55 |
1.45 |
1.25 |
1.15 |
|
(%) Water Required for Casting |
18-23 |
20-25 |
21-25 |
28-35 |
40-45 |
45-50 |
|
CCS/MOR (MPa) |
at110℃x24h |
15(4) |
10(3.0) |
12(3.5) |
11(3.3) |
8(3) |
8(2.5) |
at1,200℃x3h |
14(4) |
10(3.0) |
11(3.5) |
5(2.5) |
4(2) |
4(2) at1,000℃ |
|
at1,400℃x3h |
15(5) |
14(8.1) |
22(10.8) |
15(3) |
- |
- |
|
(%) Permanent Linear Change |
at110℃x24h |
-0.08 |
-0.06 |
-0.12 |
-0.06 |
-0.09 |
-0.09 |
at1,200℃x3h |
-0.1 |
-0.1 |
-0.18 |
-0.4 |
-0.8 |
-0.65 at1,000℃ |
|
at1,400℃x3h |
+0.1 |
-0.5 |
+0.1 |
-1.0 |
- |
- |
|
(W/m.k) Thermal conductivity |
at400℃ |
0.60 |
0.50 |
0.52 |
0.32 |
0.18 |
0.16 |
at1,000℃ |
0.80 |
0.60 |
0.64 |
0.41 |
0.24 |
0.21 |
|
(%) Chemical Analysis |
Al2O3 |
90 |
75 |
60 |
43 |
35 |
33 |
SiO2 |
- |
15 |
30 |
40 |
47 |
49 |
Product Usage:
Insulating Castables are widely used in industries requiring efficient thermal management:
- Steel Industry: Ladles, tundishes, and furnace linings.
- Cement Industry: Kiln linings, preheaters, and coolers.
- Glass Industry: Glass melting furnaces and regenerators.
- Petrochemical Industry: Reformers, incinerators, and reactors.
- Non-Ferrous Metal Industry: Aluminum and copper melting furnaces.
- Power Generation: Boilers and incinerators in thermal power plants.
- Ceramic Industry: Kiln linings and insulation layers.
Product Advantages
- Excellent Thermal Insulation: Low thermal conductivity reduces heat loss, improving energy efficiency.
- Lightweight: Low density reduces the overall weight of structures, minimizing load on equipment.
- High Temperature Resistance: Withstands temperatures up to 1600°C (2912°F), depending on the grade.
- Easy Installation: Excellent workability and fast setting time ensure quick and efficient installation.
- Thermal Shock Resistance: Performs well under rapid temperature changes, reducing the risk of cracking.
- Energy Savings: Improves furnace efficiency, leading to significant energy cost savings.
- Customizable Formulations: Tailored to meet specific thermal and mechanical requirements.
Product technology:
The production of our Insulation Castables involves cutting-edge technology and meticulous quality control. Key steps include:

Key steps include:
Selection of High-Quality Raw Materials: Only ISO-certified materials are used to ensure consistency and performance.
Precision Mixing: Advanced mixing techniques guarantee uniform distribution of components for reliable thermal insulation.
Customizable Density Options: Tailored to meet specific application requirements, from lightweight linings to more dense structures.
Rigorous Testing: Each batch undergoes thorough testing to ensure compliance with international standards for thermal conductivity, strength, and durability.
Why Choose Us?

23+
years experience focus on refractories field

2 plants
with 3 sets of tunnel kilns for 120,000 tonnes capacity

3 QC
Labs Technology Centres

120+ employees
with ISO9001,TUV,SGS,Intertek certifications

100+
abroad customers in 50+ countries

20+
major industry furnace projects yearly
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