Calcium Silicon High Grade

Silicon calcium is not called calcium silica. It is a binary alloy composed of silicon and calcium. So, it is also known as silicon calcium alloy.The calcium content is 22%-35%, and the silicon content is 55%-65%. It also contains different amounts of impurities. For example, iron, aluminum, carbon, sulfur and phosphorus.

CaSi alloy can be obtained in lump or powder form. The most widely used method for intergrated steel applications is in the form of cored wire. This is mainly because calcium has low density and high reactivity in the ladle. This makes it difficult to introduce and retain it in the melt. Calcium silicon cored wire eliminates these variables.

Silicon calcium is made of quartz, limestone and coal as raw materials. It is produced in submerged arc electric furnaces . It is mainly used as a incubator for cast iron. Silicon calcium alloy has a strong reduction ability and is also used as an oxygen at high-quality steel. As a deoxidizer of steel, SiCaBa alloy or SiAlBaCa alloy, or SiCaMn alloy is mostly used.

Both size and packing can be customized as clients' requests

1.Composite deoxidizer, desulfurizer. Mainly used for high grade steel. The silicon calcium alloy has strong deoxidation ability. The deoxidation product is easy to float and is easy to discharge. It also improves the properties of steel and improves the ductility of steel.

2.As an additive in the production of ductile iron.

3.Can be used as an inoculant for cast iron.

4.The warming agent used in the converter steel workshop.

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1. First-Hand Experience
As an experienced Calcium Silicon manufacturer, we collaborated with a European special steel producer facing a persistent challenge: inefficient desulfurization and inclusion control during secondary refining, leading to inconsistent steel quality and increased reject rates. The goal was to enhance metallurgical purity and process predictability. After analyzing their ladle furnace practice, we recommended optimizing the treatment by using our Calcium Silicon (Ca28-31%, Si58-62%) with a specific particle size and injection method. The result was a notable improvement in sulfide shape control and a 40% reduction in oxide inclusions, achieving cleaner steel with better mechanical properties. Through this process, we confirmed that targeted Calcium Silicon application is not just an additive step but a precision tool for micro-cleanliness enhancement and predictable refining outcomes.

2. Details & Scenario Enhancement
During the trial, the client observed irregular calcium yield and occasional nozzle clogging when switching to our product. We responded by providing custom-sized granules and real-time guidance on injection rates and argon stirring parameters, along with conducting joint tests to monitor yield efficiency. The unexpected challenge turned into an opportunity to fine-tune both the material specification and the process itself. This experience highlighted that success in alloy addition depends not only on product quality but also on process integration-making supplier expertise a critical part of operational success.

3. Real Client Reference
A clear example is our partnership with  (a German special steelmaker). The client needed to meet stricter automotive-grade steel standards but faced high desulfurization costs and unstable inclusion ratings. Our solution included a tailored Calcium Silicon blend combined with a streamlined wire injection system for precise and efficient treatment. Within two production cycles,they achieved a 30% reduction in desulfurizer consumption, consistently met Grade 2 inclusion requirements, and reduced refining time by 15%. This not only secured their supply contract with a major automotive client but also established our role as their long-term technical partner in advanced steel refining.

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