Self-flowing castable is a high-tech refractory material developed based on the principles of closest packing, solid–fluid theory, and fluid mechanics, and tailored for refractory applications.
During use, it self-levels and densifies under its own weight without vibration.
The material is easy to apply and offers high-temperature, erosion, and wear resistance, along with excellent thermal shock stability.
It is suitable for hot repair of furnace roofs, furnace walls, water-cooled lining strips, and various kilns, especially in complex, narrow, or hard-to-access areas
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Item |
Self-flow Refractory Castable |
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|
HX-ZL50 |
HX-ZL55 |
HX-ZL60 |
HX-ZL65 |
HX-ZL70 |
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|
AL2O3(%) ≥ |
50 |
55 |
60 |
65 |
70 |
|
|
Volume Density (g/cm3) |
110℃x24h ≥ |
2.25 |
2.35 |
2.35 |
2.50 |
2.55 |
|
1300℃x3h ≥ |
2.2 |
2.3 |
2.3 |
2.45 |
2.5 |
|
|
Compressive Strength (MPa) |
110℃x24h ≥ |
30 |
35 |
40 |
45 |
50 |
|
1300℃x3h ≥ |
50 |
55 |
60 |
70 |
80 |
|
|
Rupture Strength (MPa) |
110℃x24h ≥ |
5 |
6 |
6 |
7 |
8 |
|
1300℃x3h ≥ |
7 |
9 |
9 |
10 |
12 |
|
|
Linear Variation (%) |
110℃x24h |
±0.2 |
±0.2 |
±0.2 |
±0.2 |
±0.2 |
|
1300℃x3h |
±0.6 |
±0.6 |
±0.6 |
±0.6 |
±0.6 |
|
|
Added Water Reference Amount for Construction (%) |
7-9 |
7-9 |
7-9 |
7-8 |
7-8 |
|
|
Long-term Use Temperature (°C) |
1350 |
1350 |
1350 |
1500 |
1550 |
|
|
Max,Use Temperature(°C) |
1600 |
1600 |
1600 |
1700 |
1750 |
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|
Use Position |
Wrapping for Water Cooled Tube Furnace Roof,Furnace Wall |
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Self-flowing castables are based on low-cement and ultra-low-cement castables and consist of refractory aggregates, powders, and high-efficiency dispersants with a controlled particle size distribution.
The proper proportion of ultrafine powders and high-efficiency dispersants enables the castable to achieve self-flowing and self-leveling behavior.
Compared with vibratory castables, self-flowing castables offer the following advantages:
● They are self-flowing under their own weight without vibration;
● They self-level and reach areas that vibratory castables cannot access;
● They ensure optimal performance in service;
● They are suitable for pumping, reducing labor and accelerating construction;
● They generate less noise during installation;
● They are easy to evaluate on-site for construction performance.
Self-flowing castables offer advantages over conventional castables and are widely used in a variety of applications.They are suitable for tundish linings in continuous casting, electric furnace roofs and tap-hole areas, ladles, blast furnace tapping channels, CAS-OB furnaces, cast iron induction furnaces, boiler protective tubes, and other high-temperature applications.
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Comparison Content |
Self-flowing Castable |
Ordinary Castable |
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Construction Method |
Self-flowing without vibration |
Requires mechanical vibration |
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|
Flowing Energy |
Highly fluid and self-leveling |
Limited fluidity |
|
|
Molding Density |
Uniform and high |
Depends on construction quality |
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|
Construction Efficiency |
High |
Lower efficiency |
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Adaptability of Complex Structures |
Suitable |
Difficult to construct |
|
|
Construction Quality Stability |
Good Consistency |
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●Standard Packaging: Available in 50 kg bags, jumbo bags, or palletized packaging; customized packaging available upon request.
●Storage: Store in a dry and well-ventilated place. The product remains stable under recommended storage conditions.
Shandong Haixin Refractory Materials leverages its automated monolithic refractory production line and well-developed formulations to strictly control key properties such as flowability, setting time, and high-temperature performance of self-flowing castables. This ensures consistent construction and in-service performance, delivering highly reliable construction solutions to customers.
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