Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:1 m.t.
Supply Capability:2000 m.t./month
High Alumina Refractory Cement for Furnaces is manufactured through fusing high quality raw magnesite in electric arc furnace with the characteristics of big crystal, dense structure and strong corrosion resistance. As an excellent basic refractory raw material, its MgO content is between 87 – 98%.
High Alumina Refractory Cement for Furnaces (Big Crystal) whose MgO content is between 97 – 99% is widely used in refractory industry. Meanwhile, it is also an excellent high-temperature endurable insulating material.
Specifications of High Alumina Refractory Cement
| Item | Grade | ||||||
| High Alumina Brick | Clay Brick | Phosphoric Acid Dipping Clay Brick | |||||
| GL-65 | GL-55 | GL-48 | ZGN-42 | ZGN-42 | |||
| Chemical Composition(%)≥ | Al2O3 | 65 | 55 | 48 | 42 | 42 | 41-45 |
| Fe2O3 | 2.0 | 2.0 | 2.0 | 1.6 | 1.7 | 1.8 | |
| P2O5 | --- | --- | --- | --- | --- | 7 | |
| Refractoriness℃ | 1790 | 1770 | 1750 | 1750 | 1750 | --- | |
| Apparent Porosity(%)≤ | 19 | 19 | 18 | 15 | 16 | 14 | |
| Alkali Resistance(Strength Degradation)%≤ | --- | --- | --- | --- | --- | --- | |
| 0.2 MPa Refractoriness Under Load ℃≥ | 1500 | 1480 | 1450 | 1450 | 1430 | 1450 | |
| CCS (MPa)≥ | 58.8 | 49 | 49 | 58.8 | 49 | 60 | |
| Dead Burnt Linear Change(%)≤ | 1450℃*2h | 0/-0.2 | 0/-0.2 | 0/-0.3 | 0/-0.2 | ||
1500℃*2h | 0/-0.2 | ||||||
Features of High Alumina Refractory Cement
High refractoriness
Good spalling resistance and wear resistance.
Good corrosion resistance.
Good thermal shock resistance.
High mechanical strength.
High-temperature creep rate is low.
