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.
Carbon materials · Cupola fuel
Foundry coke for cupola melting
Aliases: Foundry coke · Cupola coke
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.
Product codeCH-FOUNDRY-COKE
Industry application1
Key indicatorsFixed C / ash / total sulfur / volatile matter / moisture · Size distribution / undersize / oversize · Drop / shatter strength / stability / reactivity · Porosity / bulk density / quenching route
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
- Cupola heat source
- Coke bed and burden permeability
- Part of the iron carbon/sulfur balance
Where it fits
- Establishing the bed before ignition and layered charge coke with metal and flux during operation
Boundary not to miss
- Mismatched size, strength, reactivity or fines can impair permeability, destabilise the furnace and reduce melt rate/iron temperature; ash and sulfur increase slag and iron sulfur load
- Wet coke, mixed-in breeze or mechanical degradation changes effective sizing and increases operating/off-gas risk
SELECTION BOUNDARY
Start with the selection boundary
Link only to production lines containing a cupola-melting stage; induction furnaces, EAFs, ladle refining and moulding lines do not use this product. Blast-furnace coke, generic metallurgical coke, coke breeze/dust and fuel coal do not become foundry coke because their carbon content appears similar. Cupola inoculation, nodularisation and molten-iron recarburizing remain different products and process points.
PRODUCT MANUFACTURING
Manufacturing process and identity boundary
Foundry coke is generally made by crushing, homogenising and charging suitable coking-coal blends, controlled carbonisation without air in a coke oven, supplier-declared quenching/cooling and final screening into large cupola-suitable lumps with inspection. By-product versus heat-recovery oven, coal blend, coking time and quenching vary by producer.
- 01Review coking-coal source, blend identity, ash/S and coking behaviour
- 02Crush, homogenise and meter the coal blend with lot traceability
- 03Carbonise under control in the actual supplier oven to form adequate size and strength
- 04Quench/cool by the declared route while controlling moisture, cracks and contamination
- 05Screen large lumps, remove breeze, sample/test and ship with breakage control
SPECIFICATIONS & PACKAGING
Grades, RFQ parameters, indicators and documents
The purchase specification must combine GB/T 8729 with the actual cupola, fixing large-lump distribution, undersize/oversize, drop or shatter strength and relevant reactivity measures, together with fixed carbon, ash, total sulfur, moisture, volatiles, any required porosity/bulk density and sampling method. Similar carbon content does not replace size, strength and permeability requirements.
- 01Confirm GB/T 8729 revision, product grade and actual cupola diameter/charging system
- 02Fix large-lump sizing, fines/undersize, oversize and transport-degradation allowance
- 03Agree strength, stability, reactivity, corresponding methods and sampling rules
- 04Agree fixed carbon, ash, total sulfur, moisture, volatiles and conditional physical properties
- 05Reconcile TDS, SDS/PSI, contract, lot COA, shipment and receipt sizing
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 01Foundry coke for cupola meltingConfirm 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
Foundry coke for cupola melting
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Fixed C / ash / total sulfur / volatile matter / moistureSize distribution / undersize / oversizeDrop / shatter strength / stability / reactivityPorosity / bulk density / quenching route
- 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
Establishing the bed before ignition and layered charge coke with metal and flux during operation
- Furnace / equipment
- Cupola and the cupola stage of cupola–induction duplex iron supply
- Material / output
- Cast-iron base metal melted under a designed cupola charge and grade practice
APPLICATION METHOD
Application, calculation, effect and risk validation
Foundry coke is used only on lines with a cupola-melting stage: establish the bed before start-up, then alternate charge coke with metal and flux during production. Bed and charge coke are designed from furnace geometry, blast, heat balance, melt rate, iron temperature, carbon/sulfur and ash-to-slag balance; it is not a bulk recarburizer and the fixed-carbon absorption equation does not apply.
- 01Confirm cupola cross-section, tuyeres, bed reference, blast/oxygen/hot blast and target melt rate
- 02Include coke heat value, reactivity, sizing, strength, ash/S and metal/flux in heat and material balances
- 03Establish the bed and alternate charge coke, metal and flux under the charge card
- 04Monitor burden level, pressure/permeability, melt rate, iron temperature, slag and iron C/S, then correct
- 05Review against furnace-specific coke-to-metal history and stable operation; publish no cross-furnace fixed kg/t
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
Iron foundries
Establishing the bed before ignition and layered charge coke with metal and flux during operation
- Furnace / equipment
- Cupola and the cupola stage of cupola–induction duplex iron supply
- Material / output
- Cast-iron base metal melted under a designed cupola charge and grade practice
- Method
- Set the charge card from cupola/tuyere geometry, coke-bed height, blast/oxygen/hot blast, melt rate, metal/flux layering, target temperature, slag and carbon/sulfur balance, then close the loop with furnace condition, iron temperature and samples.
- Quantity determination
- Foundry coke is not a bulk recarburizer calculated by fixed-carbon absorption, so the recarburizer equation does not apply. Bed and charge coke depend on cupola cross-section, bed height, blast/oxygen, coke heat value/reactivity, target melt rate/iron temperature, carbon/sulfur pickup, ash-to-slag balance and plant coke-to-metal history; no fixed cross-furnace kg/t is published.
Expected effects
- Provides melting heat and maintains the designed coke bed, burden stability and permeability
- Forms part of the cupola carbon, sulfur and slag balance
Limits and risks
- Mismatched size, strength, reactivity or fines can impair permeability, destabilise the furnace and reduce melt rate/iron temperature; ash and sulfur increase slag and iron sulfur load
- Wet coke, mixed-in breeze or mechanical degradation changes effective sizing and increases operating/off-gas risk
STORAGE & SAFETY
Storage, handling and risk
- Storage must control rain, soil, foreign matter, size segregation and mechanical degradation; recheck moisture and sizing before shipment.
- Cupola operation involves heat, CO and fume hazards; charging, ignition, blast, shutdown and extraction must follow plant procedures and the applicable 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.
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
- GB/T 8729—2017 Foundry coke, official record ↗Standard · 2026-08-21
- SunCoke: official statement on foundry coke for cupola melting ↗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-FOUNDRY-COKEFoundry coke for cupola melting
- 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.