Description
Alumina magnesia castable is a high performance amorphous refractory materials made of high alumina bauxite clinker, corundum, magnesia, alumina magnesia spinel and other main raw materials, with binders and additives.
Alumina magnesia castables have the characteristics of high temperature resistance and good thermal shock resistance, and can withstand the high temperature environment and rapid temperature changes in the kiln.
Alumina magnesia castables have strong corrosion resistance and can resist erosion by slag and other factors.
Alumina magnesia castables have high mechanical strength and wear resistance, and can effectively resist material erosion, thereby extending the service life of the kiln lining and reducing maintenance costs.
Specifications
| Items | Grades | |||||
| AlMg95 | AlMg90 | AlMg85 | AlMg80 | AlMg70 | ||
| ω(Al2O3+MgO) / % | ≥95 | ≥90 | ≥85 | ≥80 | ≥70 | |
| ω(MgO) / % | ≥2 | ≥4 | ≥5 | ≥8 | ≥10 | |
| Bulk Density / (g/cm³) | 110℃×24h | ≥3.05 | ≥2.90 | ≥2.85 | ≥2.80 | ≥2.60 |
| CCS / MPa | 110℃×24h | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 |
| 1000℃×3h | ≥50 | ≥50 | ≥40 | ≥40 | ≥40 | |
| —— | ≥70 1600℃×3h | ≥60 1550℃×3h | ≥60 1550℃×3h | ≥30 1550℃×3h | ≥30 1500℃×3h | |
| CMOR / MPa | 110℃×24h | ≥8 | ≥4 | ≥4 | ≥4 | ≥4 |
| 1000℃×3h | ≥10 | ≥6 | ≥6 | ≥4 | ≥4 | |
| —— | ≥12 1600℃×3h | ≥10 1550℃×3h | ≥6 1550℃×3h | ≥4 1550℃×3h | ≥3 1500℃×3h | |
| HPLC / % | 0~+1.5 1600℃×3h | 0~+1.5 1550℃×3h | 0~+2.0 1550℃×3h | 0~+2.0 1550℃×3h | 0~+2.0 1500℃×3h | |
Applications
Alumina magnesia castable is widely used in the lining of converters, electric furnaces, ladles, etc. in the metallurgical industry, withstanding the erosion and corrosion of high temperature molten steel.
Alumina magnesia castable is also used in cement kiln preheaters, decomposition furnaces and other parts of the building materials industry, resisting high temperatures and material wear.
