Carbon materials · Recarburizers

Calcined anthracite recarburizer

Aliases: Gas-calcined anthracite recarburizer · Electrically calcined anthracite recarburizer

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 carbon-source selection

View grades and specifications

Product codeCH-RECARB-CALC-ANTH

Industry application3

Key indicatorsCoal source / GCA or ECA / calcination state · Fixed C / ash / volatile matter / moisture · S / N / H / P / trace elements · Bulk density / dissolution / absorption

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 carbon-source selection

Where it fits

Charging and melting; only validated small corrections before tapping
Charging and melting with sufficient time for dissolution and resampling
Charging or melting; not a default ladle-trimming material

Boundary not to miss

Ash, S/N, coal-source variation, under-calcination, slow dissolution or excess fines may increase slag, porosity, inclusions and absorption variation
High-cleanliness, ultra-low-S/P/N or gas-sensitive grades must not use it without trials
Ash, sulfur/nitrogen and coal-source consistency may fail steel cleanliness or chemistry budgets

SELECTION BOUNDARY

Start with the selection boundary

Similar names, forms or uses do not make products interchangeable; confirm product identity, specification, application process and order documents separately.

PRODUCT MANUFACTURING

Manufacturing process and identity boundary

Calcined-anthracite recarburizer is made from verified anthracite by controlled gas-fired or electrically heated calcining, followed by cooling, crushing/screening, product homogenisation, sampling/testing and protected packing. GCA and ECA identify different routes; coal source, equipment, thermal schedule, fuel and calcination state belong to the actual supplier's files, and the page assumes neither one universal route nor Jinsheng-owned production.

01Verify anthracite source, lot, coal quality, ash/S/N and foreign matter
02Confirm GCA or ECA identity and calcine under supplier documents
03Cool under control and prevent moisture pickup, raw-coal and other-carbon mixing
04Crush, screen, remove abnormal fines and homogenise by SKU
05Sample and test calcination state, chemistry, sizing and properties, then pack against moisture

SPECIFICATIONS & PACKAGING

Grades, RFQ parameters, indicators and documents

An RFQ must state GCA/ECA, coal source, fixed carbon, ash, volatiles, moisture, S/N/H/P and trace elements, full sizing, fines/oversize, bulk density, calcination state and furnace-specific dissolution/absorption validation. CAC is easily confused with calcium aluminate cement, so the full name should be used in orders, labels and codes.

01Confirm GCA/ECA and coal source with the full name; do not order under the bare acronym CAC
02Agree fixed carbon, ash, volatiles, moisture and S/N/H/P/trace elements
03Agree size distribution, fines, oversize, bulk density and sampling method
04Define calcination state, dissolution/absorption test and lot consistency in the contract
05Reconcile TDS, SDS/PSI, lot COA, pack and source 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 01Calcined anthracite recarburizerConfirm grade, applicable standard and guaranteed values before quotation	Coal source / GCA or ECA / calcination stateConfirm in inquiry Fixed C / ash / volatile matter / moistureConfirm in inquiry S / N / H / P / trace elementsConfirm in inquiry Bulk density / dissolution / absorptionConfirm 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 anthracite recarburizer

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

Key indicators: Coal source / GCA or ECA / calcination stateFixed C / ash / volatile matter / moistureS / N / H / P / trace elementsBulk density / dissolution / absorption
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.

Iron foundries

Charging and melting; only validated small corrections before tapping

Furnace / equipment: Coreless induction furnaces and validated duplex-melting routes
Material / output: Grey iron; ductile iron/CGI only with low-residual product validated for S/N/H and nodularisation risk

Steel foundries

Charging and melting with sufficient time for dissolution and resampling

Furnace / equipment: EAF or validated coreless induction furnace
Material / output: Cast steel whose ash, sulfur, nitrogen and other residual budgets permit the coal source

Steelmaking plants

Charging or melting; not a default ladle-trimming material

Furnace / equipment: Electric-furnace routes jointly approved by supplier and steel plant
Material / output: Steel grades whose residual, ash and cleanliness budgets permit the product

APPLICATION METHOD

Application, calculation, effect and risk validation

Calcined anthracite may recarburize with the charge or during melting in validated cast-iron induction furnaces, cast steel or selected electric-steel routes. Its absorption cannot be copied from GPC/CPC; ductile iron, CGI, high-cleanliness or gas-sensitive metal requires separate review for ash, S/N/H and source variability.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 furnace, metal grade, charge carbon and ash/S/N/H/cleanliness budgets
02Make the starting mass balance from the actual GCA/ECA lot and furnace-history η_C
03Layer with metallic charge or add at the approved melting point to promote wetting and stirring
04Allow dissolution time, resample C/S/N and observe slag, porosity and microstructure
05Maintain absorption and stop criteria separately by source and route without cross-product borrowing

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.

Iron foundries

Charging and melting; only validated small corrections before tapping

Furnace / equipment: Coreless induction furnaces and validated duplex-melting routes
Material / output: Grey iron; ductile iron/CGI only with low-residual product validated for S/N/H and nodularisation risk
Method: Layer appropriately with metallic charge and ensure wetting, dissolution and stirring; establish a separate practice from coal source, sizing and furnace-specific absorption.
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 carbon and carbon equivalent within a validated charge and residual window

Limits and risks

Ash, S/N, coal-source variation, under-calcination, slow dissolution or excess fines may increase slag, porosity, inclusions and absorption variation

Steel foundries

Charging and melting with sufficient time for dissolution and resampling

Furnace / equipment: EAF or validated coreless induction furnace
Material / output: Cast steel whose ash, sulfur, nitrogen and other residual budgets permit the coal source
Method: Calculate from the charge-carbon deficit and measured furnace absorption; avoid strong oxidation, flotation and large late additions.
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 carbon deficit confirmed by mass balance

Limits and risks

High-cleanliness, ultra-low-S/P/N or gas-sensitive grades must not use it without trials

Steelmaking plants

Charging or melting; not a default ladle-trimming material

Furnace / equipment: Electric-furnace routes jointly approved by supplier and steel plant
Material / output: Steel grades whose residual, ash and cleanliness budgets permit the product
Method: Establish the practice from the actual GCA/ECA grade, sizing, slag oxidation and delivery method; do not transfer cast-iron assumptions directly to steelmaking.
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 charge-carbon balance in approved steel grades

Limits and risks

Ash, sulfur/nitrogen and coal-source consistency may fail steel cleanliness or chemistry budgets

STORAGE & SAFETY

Storage, handling and risk

Protect strictly from moisture and segregate from uncalcined coal, coke and other carbons; lot identity cannot be judged by appearance alone.
Fines are combustible dust; manage enclosed transfer, extraction, static and ignition sources under the 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.

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

SOURCES

Public references and verification dates

JB/T 14236—2023 Recarburizer for foundry, official record ↗Standard · 2026-08-21
YB/T 192—2015 Carbon raiser for steelmaking, official record ↗Standard · 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-CALC-ANTHCalcined anthracite 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.