The electro magnesia-alumina spinel is a synthetic refractory material from commercial alumina(purity over98.5%), light fired magnesia(purity over 96%) and some high purity magnesite(mgo over 47%) by high temperature melting in electrical arc furnace, the fused Mg-al spinel consists of well grown crystals and possesses high density and good thermal shock resistance.
The electro magnesia-alumina spinel is a synthetic refractory material from commercial alumina(purity over98.5%), light fired magnesia(purity over 96%) and some high purity magnesite(mgo over 47%) by high temperature melting in electrical arc furnace, the fused Mg-al spinel consists of well grown crystals and possesses high density and good thermal shock resistance.
The fused Mg-Al spinel is ideal raw material for the production of continuous asting, slide gate bricks forcasingmozzle,firebricks for lining of ladle, liner bricks for cement kiln, refractory casting,kiln furniture for medium and high temperature applications.
| Item | AM-90 | AM-85 | AM-70 | |
| Chemical | AL2O3 | 88-92 | 82-87 | 71-76 |
| MgO | 8-12 | 12-17 | 22-27 | |
| CaO≤ | 0.4 | 0.4 | 0.6 | |
| Fe2O3≤ | 0.35 | 0.35 | 0.35 | |
| SiO2≤ | 0.25 | 0.4 | 0.4 | |
| True Density （g/m³）≥ | 3.3 | |||
| Grain Size（mm） | 0-1/1-3/3-5/5-8 | |||
| Fines （mesh） | -180 -220 -240 -320 | |||
