High alumina refractory Castables is categorized into the unshaped monolithic refractory.
High alumina refractory Castables is categorized into the unshaped monolithic refractory.They are dense refractory castables made of refractory clay and high alumina raw materials,It made of high alumina bauxite as clinker, refractory clay as powder. Then dded refractory aluminate cement and sodium tripolyphosphate according to the proportion of the mixture, and its service temperature is 1400-1550℃.
Characteristics of High Alumina refractory Castable
1.High strength and good toughness.
2.Good wear resistance and corrosion resistance.
3.High mechanical strength.
Technical Parameters of High Alumina refractory Castable
| Item | High Alumina refractory Castable | |||
| Al2O3 ，%≥ | ≥60 | ≥65 | ≥70 | |
| Maximum use temperature，℃ | 1400 | 1450 | 1500 | |
| Bulk Density，g/cm3 ≥ | 110℃×24hAfter drying | ≥2.40 | ≥2.60 | ≥2.80 |
| Compressive Strength，Mpa ≥ | 110℃×24hAfter drying | ≥55 | ≥60 | ≥65 |
| 1000℃×3h After burning | ≥80 | ≥90 | ≥100 | |
| Bending Strength，Mpa ≥ | 110℃×24h After drying | ≥7 | ≥8 | ≥9 |
| 1000℃×3h After burning | ≥9 | ≥11 | ≥13 | |
| Linear Change Rate， % | 1000℃×3h | ±0.3 | ±0.3 | ±0.3 |
High Alumina refractory Castable Application：
High alumina refractory castable are widely applied in high heat industries. Specifically, they are used in building power plant, blast furnace, melting furnace, heating furnace, soaking furnace, heat treatment furnace and induction furnace in different parts.
