What it is
Used at tapping or in LF practice to rapidly form or adjust a refining slag for desulfurisation, inclusion absorption, coverage and stable refining.
Steelmaking auxiliaries · Refining slags
Synthetic Refining Slag
Used at tapping or in LF practice to rapidly form or adjust a refining slag for desulfurisation, inclusion absorption, coverage and stable refining.
Product codeAX-SYNTH-REFINING-SLAG
Industry application3
Key indicatorsCaO · Al₂O₃ · MgO / SiO₂ · FeO + MnO / moisture / S / P
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
- Rapid slag formation
- Support desulfurisation
- Support inclusion absorption and flotation
- Cover and condition slag
Where it fits
- Ladle-bottom precharge, staged addition in the tapping stream or post-tap slag conditioning
- Early LF slag formation or slag adjustment during refining
- Post-tap ladle treatment
Boundary not to miss
- Excess carryover, FeO/MnO or moisture weakens desulfurisation, reduces alloy recovery and may contaminate steel
- Incorrect chemistry can increase heat loss, slag volume and refractory wear
- Different grades, ladle linings and refining goals cannot share one unconditional formulation
SELECTION BOUNDARY
Start with the selection boundary
“Synthetic refining slag” is not one fixed recipe. Define steel grade, tapping/LF point, carryover slag, target S, CaO/Al₂O₃, MgO, FeO+MnO, SiO₂, moisture, melting behavior and ladle refractory. GB/T 30900—2025 covers LF refining-slag agglomerates only, not every product.
PRODUCT MANUFACTURING
Product manufacturing process
Synthetic refining slag may be premelted, sintered, blended, briquetted or granulated. Melting rate, degradation, moisture and homogeneity differ, so one route cannot represent all products.
- 01Inspect CaO/Al₂O₃/MgO-bearing feeds
- 02Batch and homogenise to target system
- 03Premelt, sinter or briquette/granulate
- 04Cool, crush and screen
- 05Test chemistry, moisture and melting behaviour
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
Specifications must state CaO, Al₂O₃, MgO, SiO₂, FeO+MnO, moisture, S/P and melting behaviour. Synthetic refining slag is not one fixed recipe.
- 01Define premelted/sintered/briquetted form
- 02Check target slag system and oxidation indicators
- 03Match equipment, sizing and melting rate
- 04Confirm moisture, protected pack and lot testing
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 01Synthetic Refining SlagConfirm 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 |
| Specification direction 02Synthetic Refining SlagConfirm 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
Synthetic Refining Slag
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- CaOAl₂O₃MgO / SiO₂FeO + MnO / moisture / S / P
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
02Specification direction
Synthetic Refining Slag
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- CaO / Al₂O₃ / MgOSiO₂ / FeO + MnO / moisture
- 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
Ladle-bottom precharge, staged addition in the tapping stream or post-tap slag conditioning
- Furnace / equipment
- Ladle after BOF/EAF tapping
- Material / output
- Carbon and alloy steels, plus separately designed stainless/clean steels
Steelmaking plants
Early LF slag formation or slag adjustment during refining
- Furnace / equipment
- LF; VD/VOD/AOD only under a dedicated practice
- Material / output
- Refined steel grades with a designed slag practice
Steel foundries
Post-tap ladle treatment
- Furnace / equipment
- Steel-foundry routes equipped for ladle refining
- Material / output
- Cast steels with explicit sulfur and inclusion requirements
APPLICATION METHOD
Application method and effect validation
New addition must be calculated by deducting carryover slag, lime, deoxidation products and other effective slag sources from target total slag, then validated against grade, target S, slag system, temperature, lining and stirring.
- 01Confirm steel grade, stage and carryover
- 02Set target slag system and mass balance
- 03Precharge, stream-add or batch-add under the practice
- 04Verify with slag/steel samples, final S and lining condition
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
Ladle-bottom precharge, staged addition in the tapping stream or post-tap slag conditioning
- Furnace / equipment
- Ladle after BOF/EAF tapping
- Material / output
- Carbon and alloy steels, plus separately designed stainless/clean steels
- Method
- Control carryover slag and deoxidation first, then add against carryover and target slag; lime, deoxidizer and argon stirring may be coordinated under the plant practice.
- Quantity determination
- New addition must be calculated by deducting carryover slag, lime, deoxidation products and other effective slag sources from target total slag, then validated against grade, target S, slag system, temperature, lining and stirring.
Expected effects
- Shortens slag formation and improves ladle coverage
- Supports desulfurisation and inclusion absorption under low oxidation and adequate stirring
Limits and risks
- Excess carryover, FeO/MnO or moisture weakens desulfurisation, reduces alloy recovery and may contaminate steel
- Incorrect chemistry can increase heat loss, slag volume and refractory wear
02
Steelmaking plants
Early LF slag formation or slag adjustment during refining
- Furnace / equipment
- LF; VD/VOD/AOD only under a dedicated practice
- Material / output
- Refined steel grades with a designed slag practice
- Method
- Adjust in batches based on carryover, lime, reduction state and target viscosity, then verify with slag/steel samples and final sulfur.
- Quantity determination
- Calculate from equipment capability, carryover, target S and slag system, then verify heat by heat.
Expected effects
- Stabilises conditions for slag fluidity, sulfur removal and inclusion flotation
Limits and risks
- Different grades, ladle linings and refining goals cannot share one unconditional formulation
03
Steel foundries
Post-tap ladle treatment
- Furnace / equipment
- Steel-foundry routes equipped for ladle refining
- Material / output
- Cast steels with explicit sulfur and inclusion requirements
- Method
- Use only where slagging, stirring, sampling and temperature capability exist; a basic induction remelt must not copy an LF material package.
- Quantity determination
- Calculate from equipment capability, carryover, target S and slag system, then verify heat by heat.
Expected effects
- Creates conditions for ladle desulfurisation and inclusion control
Limits and risks
- Without sufficient equipment capability it may add slag and temperature loss without achieving the target
STORAGE & SAFETY
Storage, handling and risk
- Protect strictly from moisture and confirm dryness/free-water risk before ladle addition.
- Dust, basic oxides, fluoride-containing or other special systems require final SDS-based health and environmental controls.
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.
Official granular metallurgical-product reference
Opta's published granular-products reference covering refining and slag-treatment products; not a Jinsheng synthetic-slag TDS.
Opta Group · 2026-08-14Open reference ↗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 30900—2025 LF refining-slag agglomerates for steelmaking ↗Standard · 2026-08-14
- Opta custom synthetic slags and fluxes ↗Manufacturer source · 2026-08-14
- Tenova LF refining capability ↗Manufacturer source · 2026-08-14
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 includedAX-SYNTH-REFINING-SLAGSynthetic Refining Slag
- 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.