Description
Mullite low-cement castable is a refractory material made primarily from mullite, combined with a small amount of cement and other additives. Its characteristics include high-temperature stability, high compressive strength, excellent volumetric stability, and outstanding resistance to molten slag.
Specification
| Item | Grade | |||
| MDJ-60 | MDJ-65 | MDJ-70 | ||
| ω(Al2O3) / % | ≥60 | ≥65 | ≥70 | |
| ω(CaO) / % | ≤1.8 | ≤1.7 | ≤1.7 | |
| Cold Modulus of Rupture/ MPa | 110℃×24h | ≥6 | ≥6 | ≥8 |
| 1000℃×3h | ≥7 | ≥8 | ≥9 | |
| 1500℃×3h | ≥12 | ≥13 | ≥13 | |
| Cold Crushing Strength/ MPa | 110℃×24h | ≥40 | ≥45 | ≥55 |
| 1000℃×3h | ≥55 | ≥60 | ≥65 | |
| 1500℃×3h | ≥60 | ≥80 | ≥95 | |
| Bulk Density/（g/cm3） | ≥2.5 | ≥2.55 | ≥2.6 | |
| Permanent Linear Change on Heating/ % | 1400℃×3h | ±0.8 | ±0.8 | ±0.8 |
Applications
Steel Industry: Used for the lining and thermal insulation of blast furnaces, converters, and other equipment.
Chemical Industry: Used for the lining and thermal insulation of various chemical reactors.
Power Industry: Used for the lining of combustion chambers, superheaters and other components in boilers.
Ceramic Industry: Used for the lining and thermal insulation of kilns.
