As demand for clean steel and low-silicon steel continues to rise in global markets, Aluminum Calcium Ball has emerged as a highly effective metallurgical additive that offers superior deoxidation and desulfurization performance in steelmaking.
Produced by combining metallic aluminum (Al) and calcium oxide (CaO), Aluminum Calcium Ball serves as a multifunctional alternative to traditional materials such as pure aluminum, calcium silicide (CaSi), metallic calcium, lime, and calcium carbide (CaC?). Its unique composition enables simultaneous deoxidation, desulfurization, and inclusion modification, making it especially valuable in the production of high-purity and low-silicon steel grades.
Key Features of Aluminum Calcium Ball
Chemical Composition: Primarily composed of Al and CaO, with controlled levels of trace elements like Fe and Si.
Physical Properties: With a density ranging from 2.5–3.5 g/cm3 and a melting point between 600–800°C, it integrates quickly into molten steel. It is available in spherical or near-spherical granules, typically ranging from several millimeters to tens of millimeters in diameter.
Stable Performance: The material exhibits moderate hardness, ensuring ease of handling and transport without compromising structural integrity.
Advantages Over Traditional Materials
Compared to Pure Aluminum Deoxidizers:
While pure aluminum reacts with oxygen to form Al?O? inclusions, which can lead to poor fluidity and increased slag, Aluminum Calcium Ball enhances deoxidation efficiency and improves inclusion morphology through the synergistic effect of Al and Ca.
Compared to Calcium Silicide (CaSi):
Although CaSi provides both deoxidation and desulfurization, its silicon content may interfere with low-silicon steel production. Aluminum Calcium Ball contains ≥30% CaO and ≤6% Si, offering better control over impurities and inclusions without introducing excessive silicon.
Compared to Pure Calcium Wire or Blocks:
Pure calcium is often used for modifying inclusions but has limited deoxidizing capability and requires careful handling. Aluminum Calcium Ball combines both functions into one product, simplifying process steps and reducing costs while maintaining storage stability.
Compared to Lime or Calcium Carbide:
Traditional lime has low reactivity and is prone to moisture absorption. In contrast, the pre-melted CaO in Aluminum Calcium Ball reacts more efficiently with molten steel, increasing calcium utilization and reducing slag volume during refining.
Production Capacity & Market Reach
LSFerroalloy a leading manufacturer of Aluminum Calcium Ball in China, produces up to 5,000 metric tons per month. With a mature production system and strict quality control, the company supplies customized products to steel plants across the globe.
Conclusion
As the steel industry moves toward higher purity standards and more efficient production methods, Aluminum Calcium Ball represents an innovative solution that improves both process efficiency and final product quality. By replacing multiple single-function additives with one integrated product, it supports cleaner, faster, and more cost-effective steelmaking.