Composition Self-flowing castables are developed on the basis of low-cement and ultra-low-cement castables. It is composed of refractory aggregates, powders and high-efficiency dispersants with a certain particle size distribution. The key is the reasonable use of ultra-fine powder particle size, quantity and high-efficiency dispersants, so that the castable can achieve self-flow and automatic spreading.
Performance Self-flowing castables have the following advantages over vibrating castables: (1) They can flow under their own weight without vibration; (2) They can spread automatically and reach places that vibrating castables cannot reach; (3) They can better ensure that the performance of the castable is fully reflected in actual use; (4) They can be pumped for construction, reducing labor intensity and speeding up the construction cycle; (5) They can reduce noise pollution; (6) They are easy to test on-site for construction performance.
Application Self-flowing castables have many advantages that other types of castables cannot match, so their scope of use is quite wide. They can be used for continuous casting intermediate tank linings, electric furnace top triangles, tapping ports, steel ladle, heating furnaces, blast furnace tapping channels, CAS-0B furnaces, cast iron induction furnaces, boiler protection pipes, etc.
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project |
index |
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Al2O3-SiO2+MgO % |
≥90 |
|
|
Bulk density g/cm3 |
≥2.10 |
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Compressive strength |
110℃×24h MPa |
≥40 |
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1100℃×3h Mpa |
≥60 |
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Flexural strength |
110℃×24h Mpa |
≥6 |
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1100℃×3h Mpa |
≥8 |
|
|
Thermal shock stability |
1100℃ Water cooling/times |
≥30 |
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Line change rate |
1100℃×3h % |
≤±0.5 |
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