Ferrosilicon 75 Lumps

Ferro Silicon 75, Ferrosilicon 75 and FeSi75 all refer to a ferro silicon grade with silicon content around 75%.

We supply FeSi75 for steelmaking, foundry, casting and alloy production. The material can be supplied as lumps, granules, powder or other confirmed forms according to your feeding and production requirements.

When you select FeSi75, do not look only at the nominal silicon percentage. Aluminum, carbon, phosphorus, sulfur, calcium and other controlled elements can also affect whether a batch matches your production specification.

If you also use lower-silicon grades, you can compare our Ferro Silicon 72 before confirming the final grade.

 

 

Ferro Silicon 75 Chemical Composition

Our current FeSi75 product information includes several chemistry options with different silicon, aluminum and carbon limits.

Grade	Si	Al Max.	P Max.	S Max.	C Max.
FeSi75 Al2.0-B	74.0–80.0%	2.0%	0.04%	0.02%	0.1%
FeSi75 Al1.5-B	72.0–80.0%	1.5%	0.04%	0.02%	0.2%
FeSi75 Al1.5-A	74.0–80.0%	1.5%	0.04%	0.02%	0.1%
FeSi75 Al0.5-B	72.0–80.0%	0.5%	0.04%	0.02%	0.2%

The current product description also gives general reference limits of Ca ≤1%, Cr ≤0.5% and Mn ≤0.5%. If Ca, Cr or Mn is part of your acceptance standard, include the required limit in the RFQ and confirm it on the applicable batch COA.

Ferro Silicon 75 Lump Sizes

Our common Ferro Silicon 75 lump sizes include:

• 10–30 mm
• 30–50 mm
• 50–100 mm
• 10–50 mm
• 10–100 mm

If your furnace charging system requires another lump-size range or a specific fines / oversize tolerance, send the required size with your inquiry.

 

Standard, Low-Al and High-Purity Ferro Silicon 75

For a standard FeSi75 order, confirm the required silicon range and maximum aluminum value in writing. The current product data includes Al limits of 2.0%, 1.5% and 0.5%, so "FeSi75" alone does not define the complete chemistry.

For Low-Al Ferro Silicon 75, the current table includes an option with Al ≤0.5%. If your process controls aluminum closely, state the maximum Al value directly in your purchase specification.

If you need high-purity FeSi75 with tighter impurity limits than the published options, send us your target Al, Ca, C, P, S, Cr and Mn limits. We will confirm the available chemistry before quotation and match the agreed batch with the applicable COA.

 

 

Choose FeSi75 by Silicon and Aluminum Content

Start with the minimum silicon content required by your process, then check aluminum separately.

If your steel or alloy specification allows a higher Al input, a standard FeSi75 option may be sufficient. If aluminum needs tighter control, specify Al ≤1.5%, Al ≤0.5% or your own maximum limit before quotation.

Do not compare two Ferro Silicon 75 quotations only by price if the aluminum limits are different.

Choose Ferro Silicon 75 by Particle Size

Select the particle size according to your charging and feeding system.

For routine bulk furnace charging, 10–50 mm or 10–100 mm lumps are common choices. Smaller granules or powder should be selected only when your process is designed for that physical form.

If your equipment limits fines or oversize pieces, add those acceptance limits to the order.

Match FeSi75 to Your Application

For steelmaking, focus on silicon content, impurity limits and the lump size used in your alloying practice.

For foundry and casting, confirm whether you need FeSi75 mainly as a silicon addition, deoxidizing material or part of an inoculation process.

For magnesium production or other reduction processes, confirm the required chemistry and physical form before changing from your existing FeSi grade.

 

 

Ferro Silicon 75 for Steelmaking

FeSi75 is commonly used in steelmaking as a deoxidizer and alloying agent.

Silicon reacts with dissolved oxygen during steelmaking and also contributes silicon to the final steel chemistry. The required FeSi75 addition depends on your starting composition, target Si content and other alloy additions.

Ferro Silicon 75 for Foundry and Casting

FeSi75 is also used in cast iron and foundry production. Depending on your process, it can provide silicon addition and can be used in inoculation-related applications.

For casting work, confirm the FeSi chemistry and particle size together with your melt practice rather than selecting the grade only from the nominal 75% silicon value.

Ferro Silicon 75 for Magnesium Production

FeSi75 is used as a reducing material in silicothermic magnesium production.

If this is your application, send the required FeSi chemistry, particle size and impurity limits so the supplied material can be matched to your process specification.

Ferro Silicon 75 as a Reducing Agent

The silicon content of FeSi75 also allows it to be used as a reducing material in selected metallurgical processes.

The applicable grade should be confirmed from the required reaction conditions and impurity limits rather than from the FeSi75 name alone.

 

 

High Silicon Content

FeSi75 provides a concentrated silicon-bearing ferroalloy for steelmaking, foundry and other metallurgical processes.

Controlled Impurities

Different FeSi75 specifications allow you to control Al, C, P and S according to your production requirement. Low-Al options are available when aluminum input needs tighter control.

Deoxidation Performance

The silicon in FeSi75 participates in deoxidation reactions in molten steel while also contributing to the final silicon level.

Particle-Size Consistency

Screening allows the material to be supplied within a defined lump, granule or powder range. If you need a specific size tolerance, include it in the order.

Batch Consistency

For repeat orders, we keep the confirmed chemistry, particle-size requirement and packing basis clear from quotation through shipment. Review the batch COA against the same specification used in your purchase order.

 

 

Raw Materials for Ferro Silicon 75 Production

Ferrosilicon production uses silica-bearing raw material, carbonaceous reducing materials and an iron source. Raw-material control matters because the final FeSi75 chemistry depends on both the smelting process and the impurity input from the charge materials.

Submerged Arc Furnace Smelting

The charge is smelted at high temperature in a submerged arc furnace. Silica is reduced by carbon and combines with iron to form ferrosilicon.

Process control during smelting is used to keep the silicon level and impurity profile within the required production range.

Crushing, Screening and Inspection

After tapping and cooling, the ferro silicon is crushed and screened into the required particle-size ranges.

Before shipment, the applicable batch is checked for chemistry and the finished material is prepared according to the confirmed size and packing requirement.

 

 

 

 

Chemical Composition Testing

We check the applicable FeSi75 chemistry against the specification confirmed for the order. Si and Al are important selection points, while C, P, S and any additional controlled elements should also match your acceptance limits.

Particle Size Inspection

The finished FeSi75 is screened according to the required size. If your purchase standard includes fines or oversize limits, include those values before production and shipment.

Ferro Silicon 75 COA

We can provide a batch COA with the applicable chemical analysis results. Use the COA to compare the delivered batch with the chemistry stated in the purchase order.

For repeat orders, keep the grade name, units and impurity limits consistent between your RFQ, quotation, purchase order and COA.

Third-Party Inspection

If your order requires independent verification, we can arrange SGS or BV inspection. Confirm the sampling method, inspection scope and required documents before shipment.

If you also need an SDS / MSDS for Ferro Silicon 75, include that document requirement in the RFQ so the applicable file can be confirmed for your shipment.

 

 

Grade and Impurity Requirements

Standard FeSi75 and low-aluminum FeSi75 do not always use the same production basis. Tighter Al or other impurity limits can affect the quotation.

Particle Size and Processing

Standard lump sizes, specially screened ranges, granules and powder require different crushing and screening work. Your required size and tolerance can therefore affect the final FeSi75 price.

Order Quantity and Packing

Quantity, bag size, pallet or drum requirement and loading arrangement all affect the final commercial basis.

Raw Material and Market Costs

Ferrosilicon production cost changes with silica and carbon reductant costs, electricity, iron-bearing materials, market supply and demand, and international freight.

For a current Ferro Silicon 75 price, send the exact grade, size, quantity and destination rather than relying on an old reference price.

 

 

Ferro Silicon 75 Packing Options

Available packing can include:

• 25 kg bags
• 1 MT jumbo bags
• Iron drums where confirmed
• Wooden-frame or other export packing where required

Confirm the packing method before quotation if your warehouse, unloading equipment or internal handling procedure has a fixed requirement.

MOQ and Sample

Our standard MOQ for Ferro Silicon 75 is 1 MT.

For quality evaluation, we can provide a 1–2 kg sample; the sample can be free while courier freight is collected.

Export Delivery

We prepare FeSi75 for export according to the confirmed grade, size, packing and shipment documents. Final lead time depends on quantity, production schedule, packing and vessel arrangement.

Send the destination port and required Incoterm so we can calculate the current FOB, CFR or CIF quotation on the same basis.

 

 

 

We have welcomed partners from different countries to visit our factory, review product specifications and discuss ferroalloy supply projects.

For Ferro Silicon 75 orders, we can discuss grade selection, chemical composition, particle size, packing, inspection and delivery requirements directly with you.

 

What is Ferro Silicon 75 used for?

FeSi75 is mainly used in steelmaking, foundry, casting and alloy production. It can work as a silicon source, deoxidizer and alloying material, and it is also used in magnesium production and selected reduction processes.

What is the chemical composition of Ferro Silicon 75?

FeSi75 contains approximately 75% silicon. Our published options include different Al limits such as 2.0%, 1.5% and 0.5%, with controlled C, P and S. Confirm the exact grade and impurity limits before ordering.

What is the difference between Ferro Silicon 75 and Ferro Silicon 72?

The main difference is the silicon specification. FeSi75 provides a higher nominal silicon level than FeSi72, but the correct choice also depends on impurity limits, alloy calculation and cost.

You can review our Ferro Silicon 72 for comparison.

What particle sizes are available for Ferro Silicon 75?

Common lump sizes include 10–50 mm and 10–100 mm. We can also supply 10–30 mm, 30–50 mm, 50–100 mm, granules and powder according to the confirmed order.

What is Low-Al Ferro Silicon 75?

Low-Al FeSi75 uses a tighter aluminum limit than standard FeSi75. The current product range includes a FeSi75 option with Al ≤0.5%.

Can you provide a COA for FeSi75?

Yes. We can provide a batch COA with the applicable chemical analysis results. SGS or BV inspection can also be arranged when required.

What packing is available for Ferro Silicon 75?

Packing can include 25 kg bags, 1 MT jumbo bags and other confirmed export packing such as iron drums or wooden-frame arrangements.

What affects Ferro Silicon 75 price?

The final quotation depends on the FeSi75 grade, Al and other impurity limits, particle size, quantity, packing, market costs, destination and trade term.

 

 

Send us the FeSi75 specification you need:

Grade: standard / low-Al / other confirmed chemistry
Si and Al limits: required minimum Si and maximum Al
Size: 10–50 mm / 10–100 mm / other size
Quantity: required metric tons
Packing: required bag or export packing
Destination: destination port

If you also require a batch COA, SDS/MSDS, SGS/BV inspection or a specific particle-size tolerance, include it in the inquiry.

Request Ferro Silicon 75 Quote

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