Aliases: Spherical formed recarburizer / carbon raiser ball
A spherical or near-spherical recarburizing material made from confirmed carbonaceous fines by blending, binding, agglomeration or briquetting, drying/curing and screening. Spherical appearance does not establish feedstock, graphitization level, grade or recovery.
Adjustment of carbon contentCarbon-equivalent controlCharge-balance correction
Key indicatorsFeedstock / heat-treatment route · Fixed C / ash / volatile matter / moisture · S / N / P / H / residuals · Binder / strength / fines
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
A spherical or near-spherical recarburizing material made from confirmed carbonaceous fines by blending, binding, agglomeration or briquetting, drying/curing and screening. Spherical appearance does not establish feedstock, graphitization level, grade or recovery.
02
What it does
Adjustment of carbon content
Carbon-equivalent control
Charge-balance correction
03
Where it fits
Charging and melting, or reviewed final-carbon trimming; injection carbon and foaming-slag carbon require separate SKUs
Charging, mid-melt and pre-tap trimming
Charging, melting and pre-tap adjustment
04
Boundary not to miss
Absorption, S, N, ash and flotation losses change the outcome
Different feedstock types are not interchangeable on fixed carbon alone
High ash or poor dissolution may increase slag and absorption variation; review S, N and other residuals separately against the material and defect risk
SELECTION BOUNDARY
Start with the selection boundary
A columnar or spherical form describes finished shape first; it does not prove graphitized petroleum coke, calcined petroleum coke, calcined anthracite, natural/artificial graphite or a particular blend. The inquiry must confirm feedstock and heat-treatment route, binder, fixed carbon, S, N, ash, volatiles, moisture, dimensions, strength, post-transport fines and measured carbon recovery in the agreed furnace.
PRODUCT MANUFACTURING
Typical production route for formed recarburizers
A common cold-forming route confirms carbonaceous fines, meters and blends them, adds water and binder, kneads, extrudes or agglomerates, dries/cures, screens, tests and moisture-protects the pack. Other routes granulate before calcining or form previously calcined/graphitized powder. The actual route requires real supplier documentation.
01Verify carbon source, thermal history, binder and incoming lot
02Crush/size, meter and blend while controlling moisture
03Extrude/mould columns or agglomerate/briquette spherical forms
04Dry or cure under control and apply only the confirmed thermal route where required
05Screen and recycle fines; test chemistry, dimensions, strength and degradation
06Retain a lot sample and pack against moisture and contamination
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
Key indicators include fixed carbon, ash, volatiles, S, N, moisture, size and absorption. Absorption is a furnace/practice validation result, not a fixed material guarantee.
01First distinguish GPC, CPC or CAC route
02Check FC, S, N, ash and moisture
03Match charge mix and sizing
04Confirm pack, storage and lot traceability
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 01Spherical formed-recarburizer specification reviewConfirm shape separately from feedstock/heat-treatment identity; guarantees follow the formal TDS, order and lot COA
Feedstock / heat-treatment routeConfirm in inquiry
Fixed C / ash / volatile matter / moistureConfirm in inquiry
S / N / P / H / residualsConfirm in inquiry
Binder / strength / finesConfirm in inquiry
Agree equivalent diameter, size compliance, fines, compression/drop integrity and breakage after transport
Spherical, ellipsoidal or pillow-shaped agglomerates; actual appearance follows the approved sample
Bag, FIBC or custom packing is confirmed against actual form, handling 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
Spherical carburizer
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
Key indicators
Feedstock / heat-treatment route · Fixed C / ash / volatile matter / moisture · S / N / P / H / residuals · Binder / strength / fines
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
Charging and melting, or reviewed final-carbon trimming; injection carbon and foaming-slag carbon require separate SKUs
Furnace / equipment
EAF; tapping/LF trimming only under an approved practice
Material / output
EAF steels and grades requiring carbon correction
02
Steel foundries
Charging, mid-melt and pre-tap trimming
Furnace / equipment
EAF and coreless induction furnace
Material / output
Carbon and alloy cast steels requiring carbon adjustment
03
Iron foundries
Charging, melting and pre-tap adjustment
Furnace / equipment
Induction and duplex routes; cupola use is practice-dependent
Material / output
Base iron for grey, ductile, CGI and alloyed cast iron
APPLICATION METHOD
Application method and effect validation
Calculate from the required net carbon increase, fixed carbon and site absorption. Charging, melting and final trimming use different practices; injection carbon and foaming-slag carbon require separate SKUs.
01Confirm initial/target C and carbon carried by charge
02Select product route, size and addition timing
03Calculate using a consistent decimal mass-fraction basis
04Verify C, S, N and defect risk
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
Charging and melting, or reviewed final-carbon trimming; injection carbon and foaming-slag carbon require separate SKUs
Furnace / equipment
EAF; tapping/LF trimming only under an approved practice
Material / output
EAF steels and grades requiring carbon correction
Method
Add in staged amounts when wetting, dissolution and stirring are favorable; late trimming must avoid flotation and chemistry non-uniformity.
Quantity determination
Use decimal mass fractions consistently. General equation: ⟦m_add(kg) ≈ m_melt(t) × 1,000 × Δw_C ÷ (w_C,product × η_C)⟧. The net-increase term means target C minus predicted C after charge carbon and decarburisation; enter all mass fractions as decimals, for example 0.10 wt.% as 0.001. Review S/N limits separately.
Expected effects
Adds target carbon and corrects charge carbon balance
Limits and risks
Absorption, S, N, ash and flotation losses change the outcome
02
Steel foundries
Charging, mid-melt and pre-tap trimming
Furnace / equipment
EAF and coreless induction furnace
Material / output
Carbon and alloy cast steels requiring carbon adjustment
Method
Choose charge layering and timing from the feed mix and target carbon, allowing enough time for dissolution, sampling and recheck.
Quantity determination
Calculate from target carbon difference, fixed carbon and measured furnace-specific absorption.
Expected effects
Establishes target carbon content
Limits and risks
Different feedstock types are not interchangeable on fixed carbon alone
03
Iron foundries
Charging, melting and pre-tap adjustment
Furnace / equipment
Induction and duplex routes; cupola use is practice-dependent
Material / output
Base iron for grey, ductile, CGI and alloyed cast iron
Method
During charging, maximize contact with the metallic charge; late trimming requires control of size, bath surface, stirring and remaining holding time.
Quantity determination
Calculate from charge carbon, target C/carbon equivalent, fixed carbon and trial-verified absorption. For ductile iron/CGI, also review S, N and anti-nodularising residuals.
Expected effects
Adjusts carbon and carbon equivalent for a stable base iron
Limits and risks
High ash or poor dissolution may increase slag and absorption variation; review S, N and other residuals separately against the material and defect risk
STORAGE & SAFETY
Storage, handling and risk
Keep dry and control dust; feedstock types differ in dissolution, absorption and S/N risk.
Occupational health and transport information must follow the company's final SDS/PSI.
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.
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.
