Primary metallic silicon with 98%+ Si content, providing a high-purity silicon source for steel alloying, deoxidation, and specialty alloy production. Offers superior silicon recovery and lower impurity introduction compared to ferrosilicon.
Metallic silicon, with a minimum silicon content of 98%, represents the highest-purity silicon-bearing material available to the steelmaking industry. While ferrosilicon (FeSi 75%) is the economical workhorse for routine deoxidation and alloying, there are specific metallurgical situations where the iron content inherent in ferrosilicon is unacceptable, and metallic silicon becomes the material of choice. These include the production of certain stainless steel grades with tight iron-balance requirements, nickel-based superalloys where iron must be strictly controlled, and silicon steel grades where precise silicon content must be achieved without the iron dilution effect that accompanies ferrosilicon additions.
The deoxidation thermodynamics of metallic silicon are identical to those of the silicon in ferrosilicon—both reduce dissolved oxygen to form SiO2—but metallic silicon delivers nearly pure silicon without the accompanying iron, aluminum, and other residual elements present in ferrosilicon. This purity advantage translates to superior silicon recovery in applications where slag conditions are carefully controlled, with metallic silicon typically achieving 85–95% recovery in well-deoxidized ladle furnace conditions. The minimal aluminum content (below 0.5%) is particularly important for clean steel applications, as it reduces the generation of hard, abrasive alumina inclusions that degrade steel toughness and fatigue properties.
In the broader metallurgical supply chain, metallic silicon serves as a critical raw material for several downstream products used in steelmaking. It is the primary silicon source in the production of magnesium ferrosilicon (MgFeSi) nodularizers used in ductile iron production, and it serves as a silicon booster in aluminum alloy production where iron-free silicon additions are required. Our metallic silicon is produced through the carbothermic reduction of high-purity quartz in submerged arc furnaces, followed by careful refining and casting to achieve the target 98%+ Si content. Each batch is analyzed by ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy) for Si, Fe, Al, and Ca, with full certification provided to support quality management systems at customer facilities.
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Standard FeSi 75% ferrosilicon alloy, the workhorse deoxidizer and silicon source in steelmaking. Provides reliable silicon recovery for deoxidation, alloying, and cast iron inoculation across the full spectrum of steel grades.
High-grade silicon carbide with SiC content of 90%+, serving as both a powerful deoxidizer and a source of silicon and carbon for alloying in steelmaking. Offers simultaneous deoxidation and carburization benefits in a single addition.
Engineered multi-component deoxidizer combining active aluminum and silicon in optimized proportions for comprehensive steel deoxidation. Provides synergistic deoxidation performance exceeding single-element deoxidizers for improved steel cleanliness.
