Aliases: Silicon-carbon alloy (identity must be verified) · Silicon Recarb (market term)
High-carbon silicon is a market term that may refer to a smelted alloy, furnace-bottom recovered and sorted material, or a formed blend of silicon- and carbon-bearing fines. An inquiry must first establish the actual production route, phases, total Si/C, residuals, form and addition point.
Reviewed combined deoxidationCombined silicon and carbon adjustmentCandidate utilisation of formed fines for charging
Key indicatorsTotal Si / total C / phase identity · Al / Ca / S / P / moisture / residuals · Feedstocks / blend ratio / binder · Total Si / total C / Al / Ca / S / P / moisture
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.
01
What it is
High-carbon silicon is a market term that may refer to a smelted alloy, furnace-bottom recovered and sorted material, or a formed blend of silicon- and carbon-bearing fines. An inquiry must first establish the actual production route, phases, total Si/C, residuals, form and addition point.
02
What it does
Reviewed combined deoxidation
Combined silicon and carbon adjustment
Candidate utilisation of formed fines for charging
03
Where it fits
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Charge, melting or an approved pre-tap chemistry-correction point
04
Boundary not to miss
A fixed Si/C ratio may cause one element to reach its limit first; oxidising slag, undissolved particles, binder/ash, P/S/N and moisture can affect recovery, cleanliness and safety
Not suitable for unreviewed ultra-low-carbon, ultra-low-S/P or high-cleanliness grades
A fixed Si/C ratio, ash, binder, undissolved particles or residuals may cause element overrun, inclusions or recovery variation
SELECTION BOUNDARY
Start with the selection boundary
High-carbon silicon has no single identity that automatically covers every market product. Distinguish smelted alloy, furnace-bottom recovered and sorted material, and mechanically blended/briquetted material. It is not interchangeable by name alone with ferrosilicon, silicon carbide, a general carbon raiser or this site's silicon-carbon-alloy family.
PRODUCT MANUFACTURING
Product manufacturing process
High-carbon silicon is a market trade name, not a standard grade with one chemistry or manufacturing route. A documented product may be furnace-smelted, recovered and sorted from silicon-bearing material, or blended/agglomerated from silicon- and carbon-bearing feeds. These routes differ in phase constitution, residuals, density, degradation and bath behaviour, so each requires a separate SKU and lot traceability.
01First identify the smelted, recovered-and-sorted, or blended/briquetted route from supplier process documents
02Smelted route: verify silicon feed, carbonaceous reductant and iron source before controlled electric-furnace reduction
03Recovered-and-sorted route: confirm traceable parent material, then cool, sort, remove foreign matter, crush and classify
04Blended/briquetted route: inspect silicon- and carbon-bearing fines, meter and homogenise, bind/agglomerate and dry under control
05Cool or dry and screen according to the actual route, controlling moisture, strength and post-transport degradation
06Test finished-lot total Si, total C, phase constitution, residuals, sizing and form before packing
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
High-carbon silicon has no universal grade table that can be applied by name alone. An inquiry must fix the production route, total Si, total C and the basis for phases such as SiC, free Si and free C, plus application-specific Fe, ash or SiO₂, Al, Ca, Mn, Cr, P, S, N, O, moisture, volatiles, sizing, fines, density and agglomerate strength. All values require a formal TDS and lot COA rather than inference from the trade name.
01Map the trade name to the actual route, feedstock boundary and formal SKU
02Separately fix total Si, total C and the test/acceptance basis for effective phases
03Set P, S, N, ash, oxides and other sensitive residuals for the target steel grade
04Confirm lump, granule or briquette form plus sizing, fines, moisture, density and strength
05Review the route declaration, TDS, applicable SDS/PSI, sampling method and lot COA
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 01Smelted high-carbon-silicon specification reviewUse this identity only when supplier TDS, process evidence and lot COA establish a smelted alloy
Total Si / total C / phase identityConfirm in inquiry
Al / Ca / S / P / moisture / residualsConfirm in inquiry
Confirm the full size distribution, fines and sampling method for lump, granule or powder
Crushed lump or granule from a smelted alloy; the name alone does not establish phase composition
Bag, FIBC, steel-drum or bulk supply is confirmed against product form, transport conditions and the formal order
Specification direction 02Blended or briquetted high-carbon-silicon specification reviewEach silicon-bearing feed, carbon-bearing feed and binder requires disclosure; form does not prove chemistry or recovery
Feedstocks / blend ratio / binderConfirm in inquiry
Total Si / total C / Al / Ca / S / P / moistureConfirm in inquiry
Strength / fines / dissolutionConfirm in inquiry
Confirm dimensions, fines, drop/compression integrity and post-transport breakage
Briquette, agglomerate or another confirmed formed product
Bag, FIBC, steel-drum or bulk supply is confirmed against product form, transport conditions and the formal 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
High-carbon silicon
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
Key indicators
Total Si / total C / phase identity · Al / Ca / S / P / moisture / residuals
Size and form
Confirm against the addition method, equipment and order requirements
Packaging
Confirm in the quotation and order
02Specification direction
High-carbon silicon
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
Key indicators
Feedstocks / blend ratio / binder · Total Si / total C / Al / Ca / S / P / moisture · Strength / fines / dissolution
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.
01
Steelmaking plants
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Furnace / equipment
BOF/EAF tapping and reviewed LF/ladle routes; selected formulations only as validated BOF heat-balance trial additions
Material / output
Carbon, low-alloy and other reviewed steels that permit simultaneous Si and C input
02
Steel foundries
Charge, melting or an approved pre-tap chemistry-correction point
Furnace / equipment
Steel-foundry EAF or induction furnace approved by formal TDS and furnace trials
Material / output
Cast steel that permits simultaneous Si and C input with defined residual, ash and cleanliness budgets
APPLICATION METHOD
Application method and effect validation
Before use, Si and C in the melt require two independent mass balances together with checks on oxygen potential, final-carbon ceiling, slag, temperature, product phase constitution, residual carry-in and measured furnace-specific recovery. Addition point, dose or a replacement window against ferrosilicon/carbon raiser can be set only after lot identity review and a small plant trial; this page provides no fixed kg/t, universal recovery or one-for-one replacement ratio.
01Confirm grade, furnace, initial/target Si and C, endpoint oxygen and proposed addition point
02Review lot route, total Si/C, effective phases, dry condition and sensitive residuals
03Calculate Si- and C-limited amounts separately, with the first grade limit setting the maximum addition
04Run a small trial at the approved point, ensuring immersion, dissolution and mixing while recording furnace conditions
05Resample Si, C, P, S and N and verify inclusions/slag, dust and total cost before approving the practice
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
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Furnace / equipment
BOF/EAF tapping and reviewed LF/ladle routes; selected formulations only as validated BOF heat-balance trial additions
Material / output
Carbon, low-alloy and other reviewed steels that permit simultaneous Si and C input
Method
Confirm route, lot chemistry and phase constitution, then check endpoint oxygen, initial/target Si and C, slag, temperature, charging equipment and sizing. Use dry feed, add under the approved practice, ensure dissolution and mixing, then resample; do not copy a patent or another mill's sequence directly.
Quantity determination
Make separate Si and C mass balances, with the element that reaches its grade limit first constraining the dose. Recovery must come from furnace- and grade-specific trials, with P, S, N, Al, Ca, Fe, ash and thermal effect checked; no fixed kg/t is published.
Expected effects
Supports combined Si/C adjustment and deoxidation practice under compatible grade and oxygen conditions
May reduce separate weighing steps after validation
Limits and risks
A fixed Si/C ratio may cause one element to reach its limit first; oxidising slag, undissolved particles, binder/ash, P/S/N and moisture can affect recovery, cleanliness and safety
Not suitable for unreviewed ultra-low-carbon, ultra-low-S/P or high-cleanliness grades
02
Steel foundries
Charge, melting or an approved pre-tap chemistry-correction point
Furnace / equipment
Steel-foundry EAF or induction furnace approved by formal TDS and furnace trials
Material / output
Cast steel that permits simultaneous Si and C input with defined residual, ash and cleanliness budgets
Method
First confirm whether the product is smelted material or an agglomerated blend and review lot phase constitution, Si/C, ash, P/S/N, moisture and sizing; make separate Si and C mass balances for the cast-steel grade, ensure dissolution and mixing, then resample.
Quantity determination
The Si or C that reaches its grade limit first constrains the dose; recovery must come from trials for the furnace, product form and grade, with no fixed kg/t published.
Expected effects
Supports combined Si/C adjustment and simplified additions within a validated window
Limits and risks
A fixed Si/C ratio, ash, binder, undissolved particles or residuals may cause element overrun, inclusions or recovery variation
STORAGE & SAFETY
Storage, handling and risk
Keep dry and protected from rain and moisture; never introduce wet feed into molten metal.
Control fines during crushing, screening, transfer and charging, use local ventilation, and manage ignition sources and PPE under the risk assessment.
Safety classification must not be inferred from the trade name; gas evolution with water, transport and firefighting requirements must be reviewed against the actual SKU's latest SDS/PSI and destination rules.
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.
Blank COA template
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.
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-HIGH-C-SIHigh-carbon silicon
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.
