ZE XI MINERAL CO., LTD
Calcium Aluminate (Refining Slag)
Our Calcium Aluminate refining slag is manufactured from high-grade raw materials through sintering or electric arc melting. The product features fast slag formation, excellent arc coverage, strong slagging ability, and powerful desulfurization and deoxidation performance.
The material is primarily composed of 12CaO·7Al₂O₃ (C12A7) mineral phase, with content greater than 85%. Its high calcium activity enables rapid reaction with oxygen and sulfur in molten steel, forming low-melting compounds that float easily and achieve superior steel purification.
Key Features & Advantages
- Optimized chemical composition for rapid slag formation and shorter refining time
- Reduced power consumption due to fast slag-forming behavior
- Lower refractory consumption and extended ladle lining service life
- Excellent desulfurization and deoxidation capability
- Low melting point with strong inclusion adsorption during argon stirring and EAF tapping
- Stable and uniform quality, customizable based on customer requirements
Applications
Furnace Types
- Ladle Furnace (LF) refining
- Electric Arc Furnace (EAF)
- Secondary metallurgy
- Clean steel production
Process Functions
- Inclusion control and modification
- Sulfur and oxygen removal
- Slag formation
- Arc coverage
Steel Types
- Alloy steel
- Bearing steel
- Stainless steel
- Structural steel
- High-cleanliness steel grades
Technical Specifications
Chemical Composition
| Component | Specification (Typical Range) | Typical Value |
|---|---|---|
| Al₂O₃ | 36–40% | 37% |
| CaO | 45–50% | 46–47% |
| Fe₂O₃ | ≤1.5% | 1.1–1.2% |
| SiO₂ | ≤4.0% | 3.5–3.8% |
| MgO | ≤5.0% | 4.0% |
| S | ≤0.10% | 0.08% |
Physical Properties
| Item | Description |
|---|---|
| Form | Agglomerated sintered material / Pre-melted frit |
| Mineral Phase | C12A7 dominant (>85%) |
| Melting Point | Low melting point, good fluidity |
| Color | Off-white / Yellowish |
| Type Options | Sintered type & Pre-melted type |
| Particle Size | 5–35 mm (standard), custom sizes available |
Packaging
Calcium Aluminate refining slag is supplied in 1,000 kg jumbo bags. 25 kg woven bags are available upon request. Customized packaging solutions can be provided based on customer needs.
Storage & Handling
- Keep dry and sealed
- Avoid moisture absorption
- Handle gently to minimize dust generation