Refractory mortar is made of refractory powder mied wit inorganic or organic binder. According to the material of the fire-resistant bricks for masonry, fire-resistant powder with similar physical and chemical properties to the fire-resistant bricks is selected to meet the masonry requirements of different material fire-resistant bricks.
| Items | Clay | High aluminum | Mullite | |||||||||||||||||||
| YNP-45 | YLP-55 | YLP-70 | YMP-55 | YMP-70 | YMP-45 | YGP-60 | YGP-70 | YGP-90 | ||||||||||||||
| ALO₃% | ≥45 | ≥55 | ≥70 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | |||||||||||||
| Flexural strength Mpa | 110℃×24h | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 | ||||||||||||
| After high temperature burning ℃×3h | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | ≥5.9 | |||||||||||||
| 1200℃ | 1400℃ | 1400℃ | 1400℃ | 1500℃ | 1350℃ | 1400℃ | 1500℃ | 1500℃ | ||||||||||||||
| Refractoriness ℃ | ≥1700 | ≥1750 | ≥1770 | ≥1770 | ≥1790 | ≥1700 | ≥1790 | ≥1825 | ≥1850 | |||||||||||||
| Load softening temperature T2℃ | ≥1200 | ≥1250 | ≥1300 | ≥1400 | ≥1500 | ≥1350 | ≥1550 | ≥1550 | ≥1650 | |||||||||||||
| Bonding time /min | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 | |||||||||||||
| Rate of change of reburning line % | - | - | - | - | - | - | 0-+1 1400℃*3h | - | - | |||||||||||||
| Particle size % | >0.5mm | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ||||||||||||
| ≤0.075mm | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | ≥50 | |||||||||||||
