Magnesia-Based Castables are alkaline monolithic refractory materials manufactured from high-purity dead-burned magnesia and fused magnesia aggregate, compounded with special alkaline-resistant binders and anti-hydration additives. Precisely proportioned dry powder can be mixed with water and cast on-site to form integral basic furnace lining, specially developed for anti-alkaline-slag metallurgical environments.
Key Features：
- Excellent resistance to alkaline molten slag erosion and slag penetration.
- Ultra-high melting point and outstanding high-temperature volume stability.
- High hot strength under steelmaking temperature, not easy to soften or deform.
- Low hydration rate, stable quality for long-term storage and sea transportation.
- Dense structure, effectively prevent molten steel and slag permeation damage.
- Superior durability for cyclic metallurgical high-temperature working conditions.
Available Grades：
Grade MgO80: MgO ≥80%
Grade MgO85: MgO ≥85%
Grade MgO90: MgO ≥90%
Grade MgO95: MgO ≥95%
Main Applications：
- Steel ladle integral lining and slag line key working layer.
- Tundish permanent lining and functional pouring zone.
- Electric arc furnace and converter hot repair refractory lining.
- Cement rotary kiln burning zone and transition zone maintenance.
- Non-ferrous metal smelting furnaces with alkaline slag corrosion.
Available Sizes & Packing：
Packing: 1MT ton bags, 25 kg bags or on request.
COA certificate provided per batch.
Specification:
Chemical Composition | MgO80 | MgO85 | MgO90 | MgO95 |
MgO | 80% min | 85% min | 90% min | 95% min |
SiO₂ | 6.0% max | 5.0% max | 3.0% max | 2.0% max |
CaO | 3.0% max | 2.8% max | 2.2% max | 1.5% max |
Bulk Density (after curing) | 2.60 g/cm³ min | 2.70 g/cm³ min | 2.80 g/cm³ min | 2.90 g/cm³ min |
*Specifications and Sizes can be customized upon request.
Available Sizes & Packing：
Packing: 1MT ton bags, 25 kg bags or on request.
COA certificate provided per batch.