Ferrosilicon FeSi Alloy with 75% Silicon for Steelmaking Deoxidizer in 10–220mm

Steel mills, foundries, and electronic-material producers face a common problem:
different processes demand different silicon reactivity and recovery levels.
Using a single ferrosilicon grade often leads to over-deoxidation, unstable slag chemistry, or inefficient silicon utilization.

Ferrosilicon 75 / 65 / 55 from ZhenAn is designed as a multi-grade industrial solution, allowing producers to select the optimal silicon level for steelmaking, cast iron, and electronic material applications—without compromising quality or process stability.

Ferrosilicon 75/65/55 refers to a range of silicon iron alloys with controlled silicon contents of 55%, 65%, and 75%, produced via electric arc furnace smelting. These grades are widely used across metallurgy and advanced material industries where silicon precision is critical.

In steelmaking, silicon acts as both a deoxidizer and alloying element. Choosing the wrong FeSi grade can lead to inclusions, inconsistent strength, or excess slag formation.

• FeSi 55 – Mild deoxidation, suitable for EAF operations

• FeSi 65 – Balanced silicon recovery for alloy steels

• FeSi 75 – Strong deoxidation for high-quality and special steels

This graded approach improves steel cleanliness and chemistry stability.

In cast iron production, silicon directly influences graphite morphology and molten metal behavior. Ferrosilicon 65 and 75 are widely used to:

• Improve molten iron fluidity

• Refine graphite structure

• Reduce shrinkage and porosity

• Enhance surface finish and machinability

Multi-size options ensure compatibility with different furnace scales.

For electronics and advanced materials, FeSi 75 provides a reliable silicon source with controlled impurities, supporting:

• Silicon-based alloy preparation

• Semiconductor-related material processing

• Specialty metallurgical reactions

Low sulfur and phosphorus are essential for maintaining product purity.

ZhenAn supplies Ferrosilicon 75/65/55 in a wide particle size range to meet diverse industrial needs:

• 10–50mm – Fast melting, precise dosing

• 10–100mm – Balanced dissolution for standard furnaces

• 10–220mm – Gradual silicon release for large-scale operations

This flexibility minimizes alloy loss and improves operational efficiency.

• Multiple Silicon Grades in One Supply System

• Low Impurity Control (S & P) for clean steel and electronics use

• Electric Arc Furnace Smelting ensures uniform composition

• Strict Crushing & Screening Standards

• 30+ Years of Ferroalloy Manufacturing Experience

ZhenAn supports global steel mills, foundries, and material producers with consistent FeSi quality.

All Ferrosilicon 75/65/55 grades are produced using selected quartz and iron materials in electric arc furnaces. Smelting parameters, cooling, and sizing are tightly controlled to ensure repeatable chemistry and physical properties across batches.

• Improved silicon utilization efficiency

• Reduced alloy over-consumption

• Enhanced steel and casting quality

• Better process adaptability

• Lower metallurgical risk across product lines

Q1: What does Ferrosilicon 75/65/55 mean?
A1: It refers to ferrosilicon grades with 75%, 65%, and 55% silicon content, designed for different industrial applications.

Q2: Which FeSi grade is best for EAF steelmaking?
A2: FeSi 55 or 65 is commonly used for controlled deoxidation in EAF operations.

Q3: Why is FeSi 75 preferred for electronics applications?
A3: Its higher silicon content and low impurity levels support precision material processing.

Q4: How do I choose between 10–100mm and 10–220mm sizes?
A4: Smaller sizes melt faster; larger sizes provide gradual silicon release for large furnaces.

Q5: Can one supplier provide all FeSi grades consistently?
A5: Yes. ZhenAn supplies FeSi 55, 65, and 75 under unified quality control standards.

Ferrosilicon 75/65/55 from ZhenAn offers graded silicon control, flexible sizing, and industrial-grade reliability for steelmaking, cast iron production, and electronics-related applications. By matching silicon content to process requirements, producers achieve cleaner metallurgy, stable performance, and long-term cost efficiency.