Industrial Silicon Iron 55/65 | FeSi for Steel, Electric Arc Furnace & Chemical Industry | Multi-Size 10–220mm
Industrial Challenge: Stable Silicon Control in EAF Steelmaking and Chemical Processes
In electric arc furnace (EAF) steelmaking and chemical-grade metallurgy, unstable silicon recovery, excessive slag formation, and impurity contamination remain persistent challenges. Inaccurate silicon addition can directly impact steel cleanliness, alloy consistency, and downstream processing efficiency.
Industrial Silicon Iron 55/65 (FeSi 55–65%) supplied by ZhenAn is engineered to address these issues. With controlled silicon content, low impurity levels, and a wide particle size range from 10–220mm, this grade delivers predictable deoxidation behavior and reliable silicon input for steel, alloy, and chemical applications.
What Is Industrial Silicon Iron 55/65 FeSi?
Silicon Iron 55/65 is a medium-silicon ferroalloy containing 55–65% silicon (Si) with iron as the balance. It is specifically designed for industrial users requiring stable silicon yield rather than maximum Si concentration, making it ideal for controlled EAF operations and chemical-grade applications.
Typical Specification Overview
| Item |
Specification |
| Silicon (Si) |
55–65% |
| Iron (Fe) |
Balance |
| Particle Sizes |
10–50mm, 10–100mm, 10–220mm |
| Sulfur (S) |
Low |
| Phosphorus (P) |
Low |
| Production Method |
Electric Arc Furnace |
Silicon Iron 55/65 for Electric Arc Furnace (EAF) Steelmaking
Controlled Deoxidation with FeSi 55/65 in EAF Operations
In EAF steelmaking, excessive silicon content may cause over-oxidation reactions and slag instability. FeSi 55/65 offers a balanced solution by providing sufficient silicon for deoxidation without excessive reactivity.
Key EAF Benefits:
- Predictable silicon recovery
- Reduced oxygen-related defects
- Improved steel cleanliness
- Better control of ladle metallurgy stages
FeSi 55/65 for Alloy Steel Production
Stable Silicon Addition for Low & Medium Alloy Steels
For alloy steel producers, consistency is more critical than peak silicon content. Silicon Iron 55/65 enables precise silicon adjustment in:
- Structural steels
- Engineering steels
- Low-alloy steels
Its moderate Si level supports strength improvement and oxidation resistance without destabilizing alloy chemistry.
Industrial Silicon Iron 55/65 in Chemical Industry Applications
Metallurgical-Grade FeSi for Chemical Processing
In the chemical industry, FeSi 55/65 is widely used as:
- A reducing agent
- A silicon source for chemical synthesis
- A raw material for silicate and specialty compound production
The low impurity profile ensures compatibility with chemical reactions requiring controlled metallurgical inputs.
Multi-Size FeSi 55/65 Granules: 10–220mm for Process Flexibility
ZhenAn supplies Industrial Silicon Iron 55/65 in multiple size ranges to match different industrial feeding systems:
- 10–50mm – Fast dissolution and fine control
- 10–100mm – Balanced melting and reaction rate
- 10–220mm – Controlled silicon release for large furnaces
This flexibility reduces material loss and improves furnace efficiency.
Why Choose ZhenAn Industrial Silicon Iron 55/65?
Technical & Supply Advantages
- Stable 55–65% Silicon Content – Designed for controlled metallurgical reactions
- Wide Size Range (10–220mm) – Adaptable to EAF, ladle, and chemical processes
- Low Sulfur & Phosphorus – Supports clean steel and chemical-grade use
- Electric Arc Furnace Production – Ensures uniform composition
- 30+ Years of Industry Experience – Trusted by global steel and alloy producers
Production Process: Electric Arc Furnace FeSi 55/65
ZhenAn manufactures Silicon Iron 55/65 using selected quartz and iron sources in electric arc furnaces. Strict control of:
- Smelting temperature
- Reduction time
- Granulation and screening
ensures consistent chemistry, stable particle size distribution, and industrial-grade reliability.
Industrial Benefits of FeSi 55/65
- Improved silicon utilization efficiency
- Reduced alloy over-consumption
- Enhanced steel and alloy consistency
- Lower risk of impurity-related defects
- Optimized EAF and ladle operation performance
FAQ – Industrial Silicon Iron 55/65
Q1: What does 55/65 mean in Silicon Iron 55/65?
A1: It refers to the silicon content range, 55–65%, suitable for controlled deoxidation and alloying.
Q2: Why choose FeSi 55/65 instead of FeSi 75?
A2: FeSi 55/65 offers better control and lower reactivity, making it ideal for EAF steelmaking and chemical applications.
Q3: Is Silicon Iron 55/65 suitable for chemical industry use?
A3: Yes. Its low impurity content and stable silicon level make it suitable for metallurgical and chemical processes.
Q4: What particle size is best for EAF steelmaking?
A4: 10–100mm is commonly preferred, while larger furnaces may benefit from 10–220mm sizes.
Q5: How should FeSi 55/65 be stored?
A5: Store in a dry, covered environment to prevent oxidation and moisture absorption.
Conclusion: Reliable Industrial Silicon Iron 55/65 for Professional Metallurgy
Industrial Silicon Iron 55/65 from ZhenAn delivers controlled silicon input, flexible particle sizing, and industrial-grade consistency. Designed for steelmakers, alloy producers, and chemical manufacturers, it supports efficient EAF operation, precise alloying, and dependable chemical processing. Backed by decades of metallurgical expertise, ZhenAn remains a trusted global supplier of ferroalloys.
