Due to the influence of high temperature thermal shock, mechanical wear, structural stress and chemical erosion, harsh use conditions, The lime kiln lining requires the refractory materials must have have good chemical erosion resistance, excellent high temperature volume stability and the integrity of the masonry, good thermal shock stability, good mechanical erosion resistance and wear resistance.
Due to more furnace types, different furnaces are equipped with different refractories, commonly used refractory are: anti-spalling high alumina bricks, phosphate high alumina bricks, mullite bricks, silica mullite bricks, magnesia-aluminum spinel bricks and so on.
| Item | Anti-flaking high alumina brick | Phosphate high alumina brick | Mullite Brick | Silicon molybdenum brick | Magnesia-aluminum spinel brick |
| Al2O3；% | ≥70 | ≥60 | ≥70 | ≥60 | 10-13 |
| MgO；% | / | / | / | / | ≥85 |
| SiC+SiO2；% | / | / | / | ≥30 | / |
| Fe2O3；% | ≤2.0 | / | ≤2.0 | / | / |
| Refractoriness；℃ | ≥1700 | ≥1750 | ≥1770 | ≥1770 | ≥1790 |
| Apparent porosity；% | ≤22 | ≤18 | ≤18 | ≤18 | ≤18 |
| Bulk density；g/cm3 | ≥2.4 | ≥2.6 | ≥2.55 | ≥2.6 | ≥2.9 |
| Cold crushing strength；Mpa | ≥50 | ≥80 | ≥80 | ≥80 | ≥60 |
| 0.2MPa Refractoriness-under-load/℃ | ≥1500 | ≥1500 | ≥1600 | ≥1650 | ≥1650 |
| Thermal shock stability; times (1100℃, water cooling) |
/ | ≥10 | ≥15 | ≥15 | ≥6 |
Ladle
Pretreatment of Liquid Iron
Hot blast stove
Refractory materials for casting
Refractory materials for Blast furnace
Coking
