Basic Oxygen Furnace Refractory Solutions

BOF Converter Refractory Lining Solutions

Zoned refractory lining systems for basic oxygen furnaces, engineered to maximize converter availability, reduce specific refractory consumption and protect each vessel area according to its thermal, chemical and mechanical wear conditions.

Request a Quotation View Lining Zones

Zoned Lining Refractory qualities selected according to local wear conditions

Lower Consumption Lining design aimed at reducing specific refractory consumption

$BOF converter refractory lining zones and vessel cross-section$

Lining Purpose

Protecting the Converter Throughout the Production Campaign

The purpose of the refractory lining in a basic oxygen furnace is to maintain maximum converter availability while meeting production requirements and controlling refractory consumption.

Different areas of the converter experience different combinations of heat, slag corrosion, metal impact, charging damage and mechanical stress. A zoned lining concept allows the refractory system to be adapted to these local conditions.

Protection against high-temperature operation

Resistance to slag penetration and corrosion

Mechanical protection in charge and impact zones

Balanced service life across the converter lining

BOF converter lining diagram showing mouth, cone, trunnion, barrel and bottom

Main Advantages

Required Performance of BOF Converter Refractories

High-Temperature Resistance Maintains refractory integrity under severe converter operating temperatures.

Anti-Slag Penetration Limits slag infiltration into the refractory structure.

Slag-Corrosion Resistance Helps withstand chemical wear caused by aggressive slag.

Non-Wettability to Molten Slag Reduces slag adherence and interaction with the lining surface.

Lining Map

Main BOF Converter Refractory Zones

The vessel is divided into distinct zones so that each area can receive a refractory quality and thickness suitable for its operating exposure.

Closing Rings Upper structural ring zone supporting the converter mouth and upper lining arrangement.

Mouth Upper opening exposed to thermal cycling, splashing and operational handling.

Discharge Area Tapping-side zone exposed to metal and slag flow during converter discharge.

Upper Cone Sloped upper-vessel lining between the mouth and cylindrical barrel.

Charge Impact Area Zone affected by the mechanical impact of charged scrap and raw materials.

Safety Lining Permanent backup layer protecting the steel shell behind the working lining.

Impact Area Lower impact zone requiring resistance to mechanical loading and local lining wear.

Trunnion Area Sidewall region near the converter support axis and vessel rotation system.

Cylindrical Barrel Main vertical vessel body exposed to slag, metal contact and repeated process cycles.

Bottom Lower vessel lining carrying thermal, chemical and structural loads during operation.

Lining Strategy

Zoned Refractory Design for Converter Availability

Working Lining

The hot-face lining directly contacts molten metal, slag and process gases and is selected according to the wear severity of each zone.

Safety Lining

The permanent backup layer supports the working lining and provides additional protection for the converter shell.

Zone-Specific Materials

Brick chemistry, carbon level, density and shape can be adjusted to the impact, corrosion and thermal demands of each converter area.

Zone Summary

Typical Lining Considerations by Converter Area

Converter Area	Typical Exposure	Main Lining Function
Mouth, Closing Rings & Upper Cone	Thermal cycling, slag splash, mechanical handling and upper-vessel wear.	Maintain dimensional stability and protect the upper vessel structure.
Charge Impact & Impact Areas	Scrap charging, mechanical shock and localized abrasion.	Resist impact and maintain working-lining integrity.
Discharge Area	Molten-metal and slag flow during tapping.	Resist erosion, chemical wear and repeated flow exposure.
Trunnion Area & Cylindrical Barrel	Slag corrosion, metal contact and repeated process cycles.	Provide balanced corrosion and structural resistance.
Bottom	High thermal loading, bath contact and structural stress.	Support the vessel bath zone and protect the lower shell.
Safety Lining	Secondary exposure behind the working lining.	Provide backup protection and structural support.

Technical note: The supplied page identifies the lining zones and performance requirements but does not specify individual brick grades, chemical compositions or physical properties. Final refractory selection should be based on the converter design, approved lining drawings, slag practice, operating campaign and wear history.

Quotation Requirements

Information Needed for Lining Design and Supply

Complete technical and operating information is required to prepare a zoned refractory recommendation.

BOF manufacturer, vessel capacity and converter model

Complete working and safety lining drawings

Brick schedule, dimensions and individual lining zones

Current refractory grades and carbon levels

Slag chemistry, tapping temperature and operating practice

Wear profile and previous lining campaign results

Required quantities, packaging and delivery schedule

Destination country and required technical documentation

Request a BOF Converter Refractory Quotation

Send us the converter model, lining drawings, operating practice, current refractory grades, required quantity and destination country for technical and commercial review.

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