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High-alumina refractory mortar
product Overview:
High-alumina refractory mortar is a high-quality refractory mortar made from high-quality high-alumina clinker as the main raw material and adding several additives. It is mainly used for masonry of High-alumina brick. It is divided into three grades of LN-55, LN-65 and LN-75 according to its physical and chemical properties.
Physical and chemical indicators:
| Grade | LN-55 | LN-65 | LN-75 | |
| Al2O3 % ≥ | 55 | 65 | 75 | |
| Refractory ℃ ≥ | 1760 | 1780 | 1780 | |
|
Flexural bonding strength Mpa ≥ |
110℃×24h | 1.0 | 1.0 | 1.0 |
| 1400℃×3h | 4.0 | 4.0 | 4.0 | |
| granularity % | ＜1.0mm | 100 | 100 | 100 |
| ＞0.5mm， | ≤2 | ≤2 | ≤2 | |
| ＜0.075mm | ≥50 | ≥50 | ≥50 | |
| Bonding time min | 1～3 | 1～3 | 1～3 | |
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