Deoxidizer Series

Calcium Silicide Powder – A Specialized Metallurgical Auxiliary Material for Efficient Composite Deoxidation and Sulfide Morphology Control

Calcium Silicide Powder is a composite compound powder primarily composed of silicon and calcium, typically containing 28%–32% calcium and 55%–60% silicon. It serves as a key additive in the smelting of high‑quality steel grades, stainless steels, and special alloys for deep deoxidation, desulfurization, and non‑metallic inclusion morphology control. The product offers core advantages such as high calcium vapor generation efficiency, strong synergy in deoxidation and desulfurization, and significant inclusion modification effects, along with characteristics including concentrated particle size distribution, good flowability, and clog‑free performance during injection. It enables precise calcium introduction and effective action during ladle refining, RH vacuum treatment, and tundish metallurgy, significantly improving steel cleanliness, reducing material anisotropy, and enhancing product fatigue resistance.

Produced through high‑temperature synthesis and ultra‑fine grinding processes, combined with precise composition ratio control and surface modification treatment, the product exhibits low hygroscopicity, high reactivity, and low harmful impurity residues. It effectively prevents nozzle clogging, promotes the formation of finely dispersed calcium sulfide/calcium aluminate inclusions, and increases the equiaxed crystal ratio in continuous cast slabs. It is particularly suitable for cutting‑edge metallurgical fields with stringent requirements on inclusion morphology and distribution, such as bearing steel, pipeline steel, gear steel, tire cord steel, and high‑quality special steels.

We provide high‑end steel and specialty alloy enterprises with multiple calcium‑silicon ratios, customizable particle sizes (10–100 mesh), and full‑process application guidance for Calcium Silicide Powder, along with injection/wire‑feeding process solutions. We are committed to being your technical partner in achieving ultra‑clean steel smelting and improving material fatigue life and service reliability.

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