Deoxidizer Series

Calcium Silicide Granules (CaSi Granules) – Specialized Additives for Efficient Calcium Treatment and Inclusion Plasticization during Refining Processes

Calcium Silicide Granules are regular granular metallurgical additives made from high‑purity calcium silicide, with calcium content stabilized between 30% and 33% and silicon content between 58% and 62%. They serve as key functional materials for calcium treatment, inclusion morphology control, and sulfur content adjustment in molten steel refining. The product offers core advantages such as high calcium recovery rate, stable reaction kinetics, and excellent batch‑to‑batch consistency, along with characteristics including high sphericity, good compressive strength, and strong storage and transport stability. It enables precise and controlled introduction of calcium during ladle injection, wire‑feeding, or mechanical addition processes, significantly increasing the plasticization ratio of alumina inclusions and improving the machinability and transverse impact toughness of steel.

Produced through melt granulation and surface passivation technology, combined with optimized particle‑size grading and moisture‑proof treatment, the product exhibits low water absorption, high bulk density, and low dust content. It effectively prevents nozzle clogging, reduces the instantaneous concentrated release of calcium vapor, and enhances the repeatability and stability of calcium treatment processes. It is particularly suitable for metallurgical applications with stringent requirements for inclusion morphology and calcium treatment effectiveness, such as pipeline steel, gear steel, bearing steel, free‑cutting steel, and high‑grade specialty steels.

We provide steel refining and specialty material enterprises with multiple particle‑size specifications (1–10 mm), customizable calcium‑to‑silicon ratios, and full‑process calcium treatment process support for Calcium Silicide Granules, along with application solutions. We are committed to being your reliable technical partner in achieving stable and efficient calcium treatment while enhancing steel cleanliness and service performance.

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