Essential details
MOQ:25MT
Shipping:Sea Freight
Package Description:PALLETS
Product Introduction
| High Alumina Brick | ||||
| Dense high alumina bricks, also known as high alumina bricks, It is more heavy than lightweight high alumina bricks. They are not used for thermal insulation, but more importantly for resistance of kiln temperature. They usually come into direct contact with the flame in the kiln during use, so heavy quality high alumina bricks usually have a high-temperature resistance effect. At the same time, high alumina bricks also have a certain degree of resistance to acid and alkali corrosion, making them widely used in industries such as metallurgy, petroleum, and chemistry | ||||
| Item | Index | |||
| SK-37 | SK-38 | SK-39 | SK-40 | |
| Al2O3, % | ≥65-70 | ≥75 | ≥80 | ≥83.5 |
| Fe2O3, % | ≤2.5 | ≤2.0 | ≤2.0 | ≤2.0 |
| Bulk Density, g/cm3 | ≥2.3 | ≥2.6 | ≥2.7 | ≥2.8 |
| Apparent porosity, % | ≤24 | ≤23 | ≤22 | ≤21 |
| Cold crushing strength, Mpa | ≥40 | ≥40 | ≥65 | ≥75 |
| 0.2MPa Refractoriness under load,℃ | ≥1450 | ≥1460 | ≥1470 | ≥1500 |
| Linear change after reheating,% | 1450℃x2h:+0.1~-0.4 | 1500℃x2h:+0.5 | 1500℃x2h:-0.5~0.2 | 1500℃x2h:-0.2~0.5 |
| Remarks: Above specification can be adjusted according to customer' s requirements | ||||