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Product description of refractory clay mortar
Refractory clay mortar is made of hard clay clinker as the base material, combined with soft clay or chemical binder.
Features of refractory clay mortar
Fire clay mortar has the characteristics of high fire resistance and strong resistance to glass erosion. Good use performance, strong adhesion, good water retention, good dispersion, and no precipitation in slurry mixing. It produces ceramic adhesive at high temperature, further improving various properties. High filling density, low water consumption and tight masonry organization.
Method of using refractory clay mortar
When using, add water and stir evenly, and add water according to the consistency. When hanging mud, the masonry shall be full and smooth.
Index of refractory clay mortar
| Item | NN-42A | NN-45A | NN-45B | LN-55B | LN-65B | LN-75B | GP-80 |
| Al2O3 % | ≥42 | ≥45 | ≥45 | ≥55 | ≥65 | ≥75 | ≥80 |
| Fire resistance ℃ | ≥1710 | ≥1730 | ≥1730 | ≥1770 | ≥1790 | ≥1790 | ≥1790 |
| Powder ≥0.5mm % | – | – | ≤1 | ≤1 | ≤1 | ≤1 | ≤1 |
| Particle size ≤0.076mm % | – | – | ≥50 | ≥50 | ≥50 | ≥50 | ≥70 |
| Mud resistance 110℃×24h MPa | ≥1.0 | ≥1.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 |
| Flexural strength 1400℃×3h MPa | ≥3.0 | ≥3.0 | – | ≥6.0 | ≥6.0 | ≥6.0 | – |
| 0.2MPa load softening ℃ | – | – | ≥1200 | ≥1300 | ≥1400 | ≥1400 | ≥1650 |
| Reburning line change rate 1400℃×3h % | 1~5 | 1~5 | +1～-5 | +1～-5 | +1～-5 | +1～-5 | – |