What it is
A nitrided-ferrosilicon family identified principally by Si, N and an Fe matrix. Steelmaking grades and separately qualified refractory application grades require independent review of grade, phase, sizing, form, TDS and lot COA.
Ferroalloys · Nitrided alloys
Nitrided ferrosilicon
Aliases: Nitrided ferrosilicon for refractories (application grade)
A nitrided-ferrosilicon family identified principally by Si, N and an Fe matrix. Steelmaking grades and separately qualified refractory application grades require independent review of grade, phase, sizing, form, TDS and lot COA.
Product codeFA-FESI-NITRIDE
Industry application2
Key indicatorsSi / N / Fe · C / Al / Ca / P / S · phase / N uniformity · Si / total N / Fe matrix
Order boundaryQuotation and order confirmation
QUICK DECISION
Four answers before reading the technical detail
This section supports initial screening; final grade, addition and effects require operating conditions, formal documents and plant validation.
What it does
- Joint Si/N addition
- Solid nitrogen carrier
- Candidate addition for qualified taphole-clay or trough-refractory formulations
Where it fits
- Alloying or trimming after slag, oxygen potential, temperature and dissolution conditions are controlled
- Closed metering and mixing, with uniform dispersion completed before forming, packing or installation
Boundary not to miss
- Variable nitrogen recovery, excess addition or poor timing can cause porosity, coarse nitrides, embrittlement or chemistry excursions
- Treating it as pure silicon-nitride powder or a silicon-nitride-bonded SiC feed creates phase, formulation and procurement errors; uncontrolled moisture, fines or dispersion also raises quality and dust risk
SELECTION BOUNDARY
Start with the selection boundary
Nitrided ferrosilicon is not ordinary ferrosilicon, pure silicon-nitride ceramic powder, a silicon-nitride-bonded SiC feed or nitrided silicomanganese. Refractory use is limited to an Fe-Si-N application grade qualified by supplier TDS and formulation trials; its name does not establish phase, a fixed dose or performance.
PRODUCT MANUFACTURING
Product manufacturing process
The matrix, precursor, forming method, nitriding furnace, atmosphere and time-temperature practice of a nitrided alloy must be confirmed from manufacturer documents. A general high-level route includes feed acceptance and preparation, controlled nitriding, cooling while preventing reoxidation and moisture pickup, homogenising and classifying, representative sampling and lot testing. This page does not depict a Jinsheng-owned nitriding line.
- 01Nitrided ferrosilicon must be verified as an Fe-Si-N nitrided product made from ferrosilicon or another confirmed silicon-iron feed, with precursor, phase and nitriding route established by manufacturer documents; it must not be described as pure Si₃N₄ ceramic powder.
- 02Confirm feed identity, lot chemistry, form and the manufacturer-declared nitriding route
- 03Crush, screen or form by the actual process while controlling fines, oxidation and foreign contamination
- 04Nitridise within the manufacturer's specified equipment, atmosphere and time-temperature window
- 05Cool under control, homogenise, sample and test nitrogen, carrier elements, phase, sizing and pack
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
The specification must state nitrogen content, carrier-alloy matrix and nitrogen phase/release behaviour together; the product name alone is not a grade. The applicable standard, supplier TDS, SDS/PSI, sample COA and purchase agreement must fix principal elements, N, C, Si, Al, P, S, O and other limits, phase/nitrogen uniformity, test methods, form, sizing, fines, moisture, pack and lot traceability. No unverified values are assumed.
- 01The specification must fix Si, total N, the Fe matrix and C, Al, Ca, P, S, O and other limits, and state phase/available nitrogen, free Si, nitrogen uniformity, lump/granule/powder form, full particle-size distribution, moisture and pack.
- 02Confirm the formal name, applicable standard, feed identity, nitriding route and supplier grade
- 03Fix carrier elements, N, C, Si, Al, P, S, O and other limits and test methods
- 04Confirm phase/nitrogen uniformity, form, sizing, fines, moisture and agglomeration limits
- 05Confirm moisture- and oxidation-protected pack, label, TDS, SDS/PSI, COA and change control
GRADES & SPECIFICATIONS
Grades, specifications, indicators and packaging
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
| Grade / family | Chemistry | Size and form | Packaging |
|---|---|---|---|
| Specification direction 01Nitrided ferrosiliconConfirm grade, applicable standard and guaranteed values before quotation |
| Confirm against the addition method, equipment and order requirements | Confirm pack format, net weight and labels in the quotation and order |
| Specification direction 02Nitrided ferrosiliconConfirm grade, applicable standard and guaranteed values before quotation |
| Confirm against the addition method, equipment and order requirements | Confirm pack format, net weight and labels in the quotation and order |
ORDER SPECIFICATION CONFIRMATION
What must be confirmed before this becomes an order specification
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
- 01Confirm the product, grade, application and supply scope
- 02Fix guaranteed chemistry, sizing, form and packing in the quotation and order
- 03Agree sampling, test methods, acceptance rules and lot COA fields
- 04Confirm the required TDS, SDS/PSI, labels and delivery documents
SELECTION AND COMPARISON
Compare specification directions by indicators and operating conditions
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
01Specification direction
Nitrided ferrosilicon
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Si / N / FeC / Al / Ca / P / Sphase / N uniformity
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
02Specification direction
Nitrided ferrosilicon
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Si / total N / Fe matrixphase composition / available N / free SiC / Al / Ca / P / S / Oparticle-size distribution / top cut / oversize / moisture
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
INDUSTRY APPLICATION
Industry, furnace, material and addition point
Confirm the process position before method and quantity calculations; an application relationship for one furnace or material must not be copied to another.
Steelmaking plants
Alloying or trimming after slag, oxygen potential, temperature and dissolution conditions are controlled
- Furnace / equipment
- BOF/EAF tapping, LF/ladle or a process-reviewed secondary-metallurgy route
- Material / output
- Applicable steel with defined nitrogen target, nitride design and C/Si/Mn/Cr/V carry-in limits
Refractory producers
Closed metering and mixing, with uniform dispersion completed before forming, packing or installation
- Furnace / equipment
- Closed batching, mixing and forming equipment for blast-furnace taphole clay, trough castable/ramming mix and related monolithics
- Material / output
- Taphole-clay or trough-refractory systems qualified for an Fe-Si-N application grade by TDS, phase, sizing and formulation trials
APPLICATION METHOD
Application method and effect validation
When a nitrided alloy is applied, mass-balance the carrier metal and N separately and review the steel grade or refractory system, initial and target chemistry, measured lot values, nitrogen phase and release, temperature, oxygen potential, slag, dissolution and historical recovery. Run a controlled trial and validate nitrides, porosity, structure and performance; no fixed kg/t, recovery or effect value is published.
- 01Steel N-Si alloying and refractory use require different application-grade reviews.
- 02Confirm the target system, initial and target carrier elements and N, and other limiting elements
- 03Check lot COA, phase, form and dry condition, then complete separate elemental mass balances
- 04Run a controlled trial within the approved temperature, oxygen potential, slag and addition point
- 05Resample to verify chemistry, nitrides, porosity, structure and performance before approval, correction or stop
- 06For steel, verify Si/N, nitrides, porosity and performance. For refractories, run trials and controls for the actual matrix, binder, sizing, heat treatment and service conditions; no fixed dose, replacement ratio or cross-formulation effect is given.
PROBLEM AND SOLUTION
From operating objective to effect verification
Each application explains the role, method, quantity principle and risk boundary; the final proposal is confirmed against operating conditions and lot documents.
01
Steelmaking plants
Alloying or trimming after slag, oxygen potential, temperature and dissolution conditions are controlled
- Furnace / equipment
- BOF/EAF tapping, LF/ladle or a process-reviewed secondary-metallurgy route
- Material / output
- Applicable steel with defined nitrogen target, nitride design and C/Si/Mn/Cr/V carry-in limits
- Method
- Choose dry, compatible sizing and an addition point from lot-measured chemistry; control dispersion, dissolution and stirring, then close the loop with a steel sample.
- Quantity determination
- Mass-balance every effective and restricted element separately, let the first element to reach a grade limit set the addition cap, and use site-validated recovery; this page publishes no fixed kg/t.
Expected effects
- Supports joint alloying-element and nitrogen adjustment in a validated practice
Limits and risks
- Variable nitrogen recovery, excess addition or poor timing can cause porosity, coarse nitrides, embrittlement or chemistry excursions
02
Refractory producers
Closed metering and mixing, with uniform dispersion completed before forming, packing or installation
- Furnace / equipment
- Closed batching, mixing and forming equipment for blast-furnace taphole clay, trough castable/ramming mix and related monolithics
- Material / output
- Taphole-clay or trough-refractory systems qualified for an Fe-Si-N application grade by TDS, phase, sizing and formulation trials
- Method
- First confirm that the lot is an Fe-Si-N application grade rather than pure Si₃N₄ or ordinary ferrosilicon. Then verify phase, Si/N/Fe and restricted elements, sizing, moisture, dispersion and dust safety, and establish the formulation window through laboratory and production trials.
- Quantity determination
- Determine from refractory matrix, binder, particle-size distribution, heat-treatment/service conditions and trial results; no fixed cross-formulation dose, replacement ratio or performance guarantee is published.
Expected effects
- May serve as an Fe-Si-N functional-addition candidate in a validated taphole-clay or trough-refractory formulation; confirm actual structure and performance changes by comparative trials
Limits and risks
- Treating it as pure silicon-nitride powder or a silicon-nitride-bonded SiC feed creates phase, formulation and procurement errors; uncontrolled moisture, fines or dispersion also raises quality and dust risk
STORAGE & SAFETY
Storage, handling and risk
- Keep dry and lot-segregated and prevent mix-ups; dust, fume and hot-metal charging controls must follow the SDS/PSI for the actual form and plant procedures.
- Without a formal SKU, TDS, SDS/PSI and lot COA, no chemistry, grade, sizing, pack, stock, dose, recovery or performance is promised.
This section does not replace the company's final SDS/PSI or the plant safety procedure.
REFERENCE AND ORDER BOUNDARY
Use industry references to understand, then order documents to confirm
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
DOCUMENTS & MEDIA
Images, TDS, SDS and COA
Document availability depends on the product, lot, destination market and order agreement.
TDS
Confirms product identity, guaranteed indicators, sizing, form and packing.
SDS / PSI
Confirms storage, handling, protection and market-specific safety information.
COA
Links a specific lot to test items, results, methods and issue information.
INDUSTRY TECHNICAL REFERENCES
Selected external reference material
The following items come from licensed public media or original producer websites and explain similar products or typical processes only. They are not Jinsheng photographs, TDS, SDS or lot COA and create no supply commitment.
COA field template (not a certificate)
A blank structure for lot, chemistry, sizing, method, disposition and issue data. It contains no test result and cannot be used for delivery.
Jinsheng blank COA field template · 2026-08-14Open field template ↗SOURCES
Public references and verification dates
- YB/T 4239—2010 Nitrided ferrosilicon ↗Standard · 2026-08-19
Public sources supplement general facts; they do not replace Jinsheng's formal product specification, TDS or lot COA.
INQUIRY PREPARATION
Prepare these operating conditions for a more precise technical response
Please provide the specification, quantity, destination, and contact information.
Already includedFA-FESI-NITRIDENitrided ferrosilicon
- 01Target industry, steel grade or casting material
- 02Furnace type, equipment, melt weight and current operating practice
- 03Measured chemistry, target chemistry and permitted residuals
- 04Planned addition point, temperature, slag and stirring conditions
- 05Current product, addition, recovery or operating-issue record
- 06Required size, form, packaging, quantity and destination
- 07Available melt analysis, microscopy, photographs or trial results
TECHNICAL AND QUOTATION CONSULTATION
Send the operating conditions for human review
Domestic inquiries are handled by the Domestic Sales Department and international inquiries by the International Sales Department. Price, availability and lead time are confirmed for each inquiry based on specification, quantity and delivery location.