Carbon materials · Recarburizers

Calcined petroleum coke recarburizer

Aliases: CPC recarburizer · Calcined-petcoke carbon raiser

This page explains the product's principal composition, application directions and inquiry points; confirm the grade, guaranteed indicators, sizing, packing and process fit before quotation.

Steel / iron recarburizingCharge-carbon balanceValidated cost/residual selection

View grades and specifications

Product codeCH-RECARB-CPC

Industry application3

Key indicatorsGreen-coke source / coke type / calciner · Fixed C / ash / volatile matter / moisture · S / N / H / P / metals · Bulk / real density / calcination state / dissolution

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 is

This page explains the product's principal composition, application directions and inquiry points; confirm the grade, guaranteed indicators, sizing, packing and process fit before quotation.

What it does

Steel / iron recarburizing
Charge-carbon balance
Validated cost/residual selection

Where it fits

Charging and melting; late steel trimming requires dedicated validation
Charging, mid-melt or pre-tap adjustment with sufficient dissolution time
Charging and melting, with controlled trimming where needed

Boundary not to miss

Sulfur, nitrogen, volatiles, ash, green-coke variability and incomplete late dissolution can create chemistry, inclusion, gas or recovery risks
Anode-grade CPC identity, typical properties or another supplier's data must not be transcribed as this product's guarantees
Do not default to ductile iron or CGI without reviewing S/N/H and source variation

SELECTION BOUNDARY

Start with the selection boundary

CPC is calcined petroleum coke—not green petroleum coke, ordinary fuel petcoke, graphitized petcoke or EAF injection carbon. Selection must compare source, calcination state, S/N/H, ash, volatiles, sizing and furnace-specific absorption; fixed carbon alone cannot justify substitution for graphitized or anthracite routes.

PRODUCT MANUFACTURING

Manufacturing process and identity boundary

Calcined-petcoke recarburizer is produced by controlled calcining of verified green petroleum coke in a rotary kiln, pot calciner, shaft kiln or another supplier-declared unit to reduce moisture/volatiles and alter density/reactivity, followed by cooling, crushing, screening, homogenisation, sampling and lot testing. Equipment, thermal schedule, coke type and any blending must be disclosed by the actual supplier; the page does not imply that Jinsheng owns a calciner.

01Verify green-petcoke source, coke type, S/N/metal residuals and lot traceability
02Calcine under control in the declared rotary, pot, shaft or other unit
03Cool under control and prevent moisture pickup, oxidation, oil and foreign matter
04Crush, screen, control fines and homogenise for the actual product
05Sample and test calcination state, chemistry, sizing and properties before packing

SPECIFICATIONS & PACKAGING

Grades, RFQ parameters, indicators and documents

Beyond fixed carbon, a CPC RFQ must confirm green-coke source/type, calciner and calcination state, ash, volatiles, moisture, S/N/H/P and metallic residuals, sizing/fines/oversize, bulk or real density where relevant, dissolution and plant absorption validation. Typical anode-grade CPC data do not automatically become a metallurgical-recarburizer specification.

01Fix CPC application identity, green-coke source/type, calciner and supplier traceability
02Agree fixed carbon, ash, volatiles, moisture and S/N/H/P/metal residuals
03Agree full sizing, fines, oversize and bulk/real-density methods
04When calcination state, dissolution or absorption is accepted, first define the test/furnace-trial basis
05Reconcile TDS, SDS/PSI, contract, lot COA and label without borrowing anode data

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 01Calcined petroleum coke recarburizerConfirm grade, applicable standard and guaranteed values before quotation	Green-coke source / coke type / calcinerConfirm in inquiry Fixed C / ash / volatile matter / moistureConfirm in inquiry S / N / H / P / metalsConfirm in inquiry Bulk / real density / calcination state / dissolutionConfirm in inquiry	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

Calcined petroleum coke recarburizer

Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.

Key indicators: Green-coke source / coke type / calcinerFixed C / ash / volatile matter / moistureS / N / H / P / metalsBulk / real density / calcination state / 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.

Steelmaking plants

Charging and melting; late steel trimming requires dedicated validation

Furnace / equipment: EAF and validated induction-melting routes
Material / output: Steel grades whose sulfur, nitrogen, volatile, ash and metallic-residual budgets permit CPC

Steel foundries

Charging, mid-melt or pre-tap adjustment with sufficient dissolution time

Furnace / equipment: EAF or coreless induction furnace
Material / output: Process-validated carbon and alloy cast steels with a residual budget

Iron foundries

Charging and melting, with controlled trimming where needed

Furnace / equipment: Coreless induction furnaces and validated duplex routes
Material / output: Grey iron; ductile iron and CGI only after approval of S/N/H and nodularisation-interference risks

APPLICATION METHOD

Application, calculation, effect and risk validation

CPC may be used for charging or melting-stage recarburizing in reviewed EAF steel, cast steel and induction-melted cast iron; ductile iron/CGI first requires review of S/N/H and nodularisation interference. It is not a one-for-one substitute for graphitized petcoke on fixed carbon alone and is not EAF injection carbon.Use decimal mass fractions for the starting estimate: ⟦m_add(kg) ≈ M_melt(t) × 1,000 × Δw_C ÷ (w_C,product × η_C)⟧. Δw_C must deduct charge-carbon carry-in and predicted oxidation/decarburisation; w_C,product comes from the actual lot; η_C must come from a site trial on the same furnace, sizing and addition point. The equation does not replace heat-by-heat resampling or create a fixed kg/t commitment.

01Confirm metal grade, furnace, charge carbon, oxidation loss and S/N/H/ash budgets
02Calculate the start amount from actual-lot fixed carbon and furnace CPC absorption history
03Add in stages at a charging/melting point favourable to contact, wetting and stirring
04Observe flotation and slag, allow dissolution time and resample C and constrained elements
05Correct CPC η_C independently from heat results; do not borrow GPC or anthracite data

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.

Steelmaking plants

Charging and melting; late steel trimming requires dedicated validation

Furnace / equipment: EAF and validated induction-melting routes
Material / output: Steel grades whose sulfur, nitrogen, volatile, ash and metallic-residual budgets permit CPC
Method: Add in stages from charge carbon, oxidation loss, slag, sizing, wetting and stirring, leaving sufficient time for dissolution and resampling.
Quantity determination: Use decimal mass fractions consistently. General estimate: ⟦m_add(kg) ≈ M_melt(t) × 1,000 × Δw_C ÷ (w_C,product × η_C)⟧. Δw_C is the net carbon increase still required after charge-carbon carry-in and predicted oxidation/decarburisation; enter product carbon fraction w_C,product and the measured furnace-, size- and stage-specific carbon absorption η_C as decimals. The equation is only a starting estimate; heat-by-heat sampling and plant trials must correct the amount.

Expected effects

Closes the target carbon deficit within the residual and absorption window

Limits and risks

Sulfur, nitrogen, volatiles, ash, green-coke variability and incomplete late dissolution can create chemistry, inclusion, gas or recovery risks

Steel foundries

Charging, mid-melt or pre-tap adjustment with sufficient dissolution time

Furnace / equipment: EAF or coreless induction furnace
Material / output: Process-validated carbon and alloy cast steels with a residual budget
Method: Calculate from measured chemistry and furnace-specific absorption, use a practice that promotes contact, wetting and stirring, and resample before tapping.
Quantity determination: Use decimal mass fractions consistently. General estimate: ⟦m_add(kg) ≈ M_melt(t) × 1,000 × Δw_C ÷ (w_C,product × η_C)⟧. Δw_C is the net carbon increase still required after charge-carbon carry-in and predicted oxidation/decarburisation; enter product carbon fraction w_C,product and the measured furnace-, size- and stage-specific carbon absorption η_C as decimals. The equation is only a starting estimate; heat-by-heat sampling and plant trials must correct the amount.

Expected effects

Corrects the cast-steel charge-carbon balance

Limits and risks

Anode-grade CPC identity, typical properties or another supplier's data must not be transcribed as this product's guarantees

Iron foundries

Charging and melting, with controlled trimming where needed

Furnace / equipment: Coreless induction furnaces and validated duplex routes
Material / output: Grey iron; ductile iron and CGI only after approval of S/N/H and nodularisation-interference risks
Method: Charge with metallic feed to promote contact and absorption; ductile/CGI practice must also review base-iron sulfur, nitrogen, pinhole and downstream Mg-treatment windows.
Quantity determination: Use decimal mass fractions consistently. General estimate: ⟦m_add(kg) ≈ M_melt(t) × 1,000 × Δw_C ÷ (w_C,product × η_C)⟧. Δw_C is the net carbon increase still required after charge-carbon carry-in and predicted oxidation/decarburisation; enter product carbon fraction w_C,product and the measured furnace-, size- and stage-specific carbon absorption η_C as decimals. The equation is only a starting estimate; heat-by-heat sampling and plant trials must correct the amount.

Expected effects

Adds carbon in an approved grey-iron or base-iron practice

Limits and risks

Do not default to ductile iron or CGI without reviewing S/N/H and source variation

STORAGE & SAFETY

Storage, handling and risk

Keep dry and isolated from oil and foreign matter; manage fines as combustible dust and prevent dispersion.
Wet petcoke or material of unknown identity/calcination state must not be introduced directly into molten metal.

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.

Jinsheng blank COA field template · 2026-08-14Open field template ↗

SOURCES

Public references and verification dates

YB/T 192—2015 Carbon raiser for steelmaking, official record ↗Standard · 2026-08-21
JB/T 14236—2023 Recarburizer for foundry, official record ↗Standard · 2026-08-21
Rain Carbon: official technical paper on calcining petroleum coke into CPC ↗Manufacturer source · 2026-08-21
Elkem Carbon Slovakia: gas-calcined-anthracite recarburizers and CPC blends ↗Manufacturer source · 2026-08-21
Elkem: recarburizer use, dissolution and casting-defect risks ↗Manufacturer source · 2026-08-21

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 includedCH-RECARB-CPCCalcined petroleum coke recarburizer

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.