Rare Earth Magnesium Silicon Ferro Alloy

Rare Earth Magnesium Silicon Ferro Alloy is a composite ferroalloy produced by melting ferrosilicon with magnesium, calcium, and rare earth elements. It is mainly used as a nodulizer and deoxidizer in ductile iron production, improving graphite spheroidization, enhancing mechanical strength, and enabling simultaneous desulfurization and purification of molten iron.

Controlled Composition

Carefully controlled Si, Mg, and rare earth ratios ensure consistent nodulizing performance across different heats and casting conditions.

 

Efficient Nodularization

Optimized magnesium recovery rate enables effective graphite spheroidization with lower addition consumption.

 

Reduced Impurity

Low levels of Mn, Ti, and other residual elements minimize slag formation and improve final casting quality.

Uniform Structure

Homogeneous alloy structure ensures predictable reaction behavior and stable performance in molten iron.

 

Customizable Grades & Sizes

Flexible composition (RE, Mg, Ca levels) and particle sizes are available to match specific furnace types and process requirements.

 

Handling & Storage Stability

Solid lump form with controlled size distribution reduces oxidation loss and improves operational safety during addition.

 

The content standards for rare earth silicon magnesium ferro alloy spheroidizing agents mainly include the content range of rare earth elements, magnesium, calcium, barium, and silicon. ‌We support customized service!

Rare earth content:

The total amount of rare earths is usually between 0.5% and 8%, mainly including elements such as lanthanum, cerium, yttrium, etc.
Magnesium content:  between 5% and 10%.
Calcium content:  between 1% and 4%.
Barium content:  between 1% and 4%.
Silicon content:  between 40% and 48%

We offer PACKAGE of 25KGS small bag, 1MT big bag and wooden pallet for your choosing!

25kgs small bag

25kgs small bag

1mt big bag

1mt big bag

1mt big bag in container

wooden pallet

Production Capability

• Equipped with modern submerged arc furnace (SAF) systems, medium-frequency induction furnaces, and automated alloy smelting lines
• Integrated raw material pre-treatment system, including crushing, screening, and precise batching to ensure stable furnace input
• Advanced temperature control and real-time monitoring system during smelting process to improve consistency and energy efficiency
• Strong output capacity designed to support long-term bulk wholesale and contract supply

Quality Assurance

• Strict incoming raw material inspection system
• In-house chemical laboratory testing center, equipped with spectrometer (OES), carbon-sulfur analyzer, and moisture detection equipment
• Each batch undergoes pre-shipment composition verification and sampling inspection
• Compliance with international industrial standards such as ISO quality management system (ISO 9001)
• Support for third-party inspection services (SGS, BV, CIQ or customer-designated inspection agencies)
• Batch traceability system ensuring full production record tracking from furnace to shipment

OEM & Custom Supply

• Custom production based on customer-required chemical composition and specification standards
• Flexible packaging solutions: 1MT / 25kg / 50kg woven bags, jumbo bags (FIBC), steel drums or container bulk loading
• Private label service (branding, marking, labeling)

Global Supply & Logistics

• Export-oriented supply chain system with experience serving Europe, Middle East, Southeast Asia, South America and Africa markets
• Cooperation with major international ports and freight forwarders for stable shipment arrangements
• Flexible shipping solutions: FCL (Full Container Load) and bulk vessel shipment (break bulk / dry bulk)
• Professional loading supervision to ensure accurate weight, safe packing, and moisture protection
• Timely coordination of customs clearance documents to reduce shipping delays

Customer Support & Service

• Dedicated sales and technical team with fast response
• Pre-sales technical support for grade selection, application guidance, and cost optimization suggestions
• Order tracking system with regular production and shipping updates
• After-sales support covering: Quality claim handling, technical feedback response, long-term cooperation improvement suggestions

Q1: What is the primary function of this alloy in casting?

A: It acts mainly as a spheroidizing (nodulizing) agent, converting flake graphite into spherical graphite in ductile iron, which significantly improves strength, toughness, and overall casting performance.

Q2: How does it improve metallurgical quality?

A: The alloy provides combined effects of deoxidation, desulfurization, and degassing, reducing impurities in molten iron and enhancing cleanliness and consistency of the final metal.

Q3: What particle sizes and packaging options are available?

A: Common sizes include 5–25 mm, 5–30 mm, 5–15 mm, 3–25 mm, 8–40 mm and 25–50 mm, with packaging options such as 25 kg bags, 1 MT jumbo bags, or pallets, suitable for bulk industrial procurement.

Q4: Can the alloy be customized for specific projects?

A: Yes. We support customized composition and size specifications to meet different casting processes, alloy grades, and performance targets.

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