BOF MgO-C Refractories & Lining

Basic Oxygen Furnace Refractory Solutions

MgO-C Refractory Products for BOF

STA Commerce supports international enquiries for MgO-C (magnesia-carbon) refractory bricks and complementary monolithic products for basic oxygen furnace (BOF) converter linings, taphole components, hot maintenance, gunning, ramming and localized repair. Grade and application requirements are coordinated with relevant refractory suppliers.

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97% MgO Magnesium oxide content listed for the referenced MgO-C brick grades

5–10% Carbon Fixed-carbon levels available in the listed brick range

$Magnesia-carbon bricks and refractory products for basic oxygen furnaces$

Product Overview

Integrated Brick and Maintenance Products for BOF Service

The product range combines shaped magnesia-carbon refractories with unshaped materials used for installation, repair and maintenance of basic oxygen furnace lining systems.

The listed MgO-C brick grades contain 97% MgO and fixed-carbon levels of 5%, 8% or 10%. Their density, apparent porosity and cold-crushing strength vary according to the selected grade.

High-MgO magnesia-carbon brick formulations

Multiple fixed-carbon levels for grade selection

Taphole, ramming, gunning and hot-repair products

Technical selection based on furnace zone and wear

Product Range

BOF Magnesia-Carbon and Maintenance Products

The page identifies six principal product categories for brick lining, taphole service and refractory maintenance.

Magnesia-Carbon Bricks

Shaped MgO-C refractory bricks available in several fixed-carbon levels and physical-property ranges for BOF lining applications.

Cassette Taphole Sleeves

Shaped refractory sleeve components for taphole assemblies, manufactured according to the required dimensions and operating design.

Magnesia-Carbon Ramming Mass

An unshaped MgO-C refractory mix installed by compaction in selected lining, joint or repair zones.

Hot Patch Material

A refractory maintenance material for localized hot repair of worn BOF lining areas during service.

Gunning Mass

A graded monolithic refractory designed for pneumatic application to worn lining surfaces.

Taphole Repair Mass

A repair product intended for maintenance and restoration of worn taphole-related refractory zones.

Grade Highlights

Fixed-Carbon and Physical-Property Options

The listed grades provide several carbon levels and property combinations for technical comparison.

5% Fixed Carbon Listed in the 5CKX and 5CSX grades, with bulk density of 3.1–3.2 g/cm³ and apparent porosity of 3–5%.

8% Fixed Carbon Available in CKX, CKXM and CSX variants. The listed 8CKXM grade has apparent porosity below 1%.

10% Fixed Carbon Listed in 10CKX and 10CSX grades, with bulk density and strength values shown in the technical table.

Main Properties

MgO-C Brick Grades for BOF

Chemical-analysis values are presented as listed in the supplied product information.

Trade Name	MgO	SiO₂	CaO	Fixed Carbon	Bulk Density (g/cm³)	Apparent Porosity (%)	Cold Crushing Strength (kg/cm²)
MEHR.MAG.Carbon.5CKX	97	0.7	1.5	5	3.1–3.2	3–5	400–600
MEHR.MAG.Carbon.8CKX	97	0.7	1.5	8	3.1–3.2	2–4	350–600
MEHR.MAG.Carbon.8CKXM	97	0.7	1.5	8	3.05–3.15	<1	500–700
MEHR.MAG.Carbon.10CKX	97	0.7	1.5	10	3.1–3.2	2–4	400–600
MEHR.MAG.Carbon.5CSX	97	0.7	1.5	5	3.1–3.2	3–5	400–600
MEHR.MAG.Carbon.8CSX	97	0.7	1.5	8	3.1–3.2	2–4	350–550
MEHR.MAG.Carbon.10CSX	97	0.7	1.5	10	3.05–3.1	2–4	350–550

Technical note: The supplied page lists the brick grades and general product categories separately. It does not establish a direct one-to-one relationship between every grade and every application or product category. Final selection should be based on the approved technical data sheet, BOF lining zone, dimensions, operating practice and wear history.

Quotation Requirements

Information Needed for Product Selection

Complete operating and dimensional information helps identify a suitable brick grade or maintenance product. Confirm final selection with the relevant refractory supplier against the applicable technical data sheet and BOF operating requirements.

BOF manufacturer, vessel capacity and lining design

Exact lining, taphole or maintenance application

Brick or sleeve drawings and dimensional tolerances

Current MgO-C grade and fixed-carbon level

Slag chemistry, temperature and operating practice

Wear history and expected service campaign

Required quantities, packaging and delivery schedule

Destination country and required documentation

Request a BOF MgO-C Refractory Quotation

Send us the BOF model, lining zone, drawings, current refractory grade, operating conditions, required quantity and destination country for technical and commercial review.

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