رونگشینگ ریفریکٹریز فیکٹری
Aluminum silicate ramming material is a kind of refractory material with high aluminum and low iron, and its main components are Al2اے3 and SiO2. It is made by high-temperature sintering and high-energy grinding or ramming. It has high service temperature, strength, and density, and is mainly used in high-demand refractory structures. Rongsheng Refractory Materials also produces castables and customized ramming materials with different compositions.
Aluminum silicate ramming material details
آئٹم | Alumina-Silicon | Silicon- Carbide | Zirconium Chrome Corundum | ||||
| KSL-1 | KSL- | KSL- | KSL- | KSL- | KSL- | KSL- | |
| Al2O3 % | ≥65 | ≥75 | ≥85 | / | / | / | ≥80 |
| SiC % | / | / | / | ≥40 | ≥60 | ≥70 | / |
| Cr2O3 % | / | / | / | / | / | / | ≥3 |
| ZrO2 % | / | / | / | / | / | / | ≥2 |
| Bulk Density g/cm3 110℃×24h | ≥2.5 | ≥2.7 | ≥2.8 | ≥2.4 | ≥2.5 | ≥2.6 | ≥2.8 |
| Permanent Linear Change Rate % 1000℃×3h | -0.4~0 | -0.5~0 | -0.5~0 | -0.4~0 | -0.5~0 | -0.6~0 | -0.6~0 |
| Cold Crushing strength MPa 1000℃×3h | ≥70 | ≥80 | ≥90 | ≥60 | ≥70 | ≥80 | ≥90 |
| Wear resistance at room temperature cm3 1000℃×3h | ≤7 | ≤6 | ≤5 | ≤7 | ≤6 | ≤5 | ≤5 |
| Thermal shock resistance 1000℃ water cooling cycle 1000℃×3h Fired | ≥30 | ≥30 | ≥25 | ≥30 | ≥35 | ≥40 | ≥30 |
| Plasticity Index % | 15~55 | ||||||
| Thermal conductivity W/(m·K) 1000℃ | 1.1~1.6 | 1.6~2.0 | 3~5 | 5~7 | 6~8 | 2~3 | |
Production of aluminum silicate ramming mass
In manufacturing, aluminum silicate ramming materials usually need to go through multiple processes, such as screening, خشک کرنا, اختلاط, pounding, وغیرہ, to ensure uniformity and stability. Its production process and formula can be adjusted according to different needs to achieve the required fire resistance and service life.
Features of aluminum silicate ramming mass
- High aluminum and low iron: ال2اے3 content is usually 55-80%, and Fe2اے3 content is shallow, generally not more than 3%. This can greatly increase the softening point and use temperature.
- Dense structure: Aluminum silicate ramming material has been rammed to obtain magnificent grain structure and higher density, generally greater than 3.4g/cm3, which greatly improves its strength and slag erosion resistance.
- High corrosion resistance: The composition of high aluminum and low iron and dense microstructure make aluminum silicate ramming material have strong resistance to acid and alkali and corrosion of various slags.
- اعلی طاقت: the compressive strength of aluminum silicate ramming material exceeds 600MPa, which enables it to withstand greater mechanical stress and service load.
- High working temperature: Generally, it can work at a temperature above 1600-1800°C, and the maximum temperature of special varieties can reach above 2000°C.
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