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PRODUCTS - STEELMAKING

As a supplier of engineered products for the Steelmaking industry, we offer the following:

• BOF (Basic Oxygen Furnace) Refractories

• EAF (Electric Arc Furnace) Refractories

• Argon-Oxygen Decarburisation (AOD)

• Ladle Refractories

• Tundish Refractories

• Copper Moulds

• Bottom Pour Refractories

• Degasser Refractories

• Slide Gate Refractories

• Others

Soaking Pit Preassembly

BASIC OXYGEN FURNACE REFRACTORIES

The Basic Oxygen Furnace (BOF), is a tiltable vessel lined with refractories such as magnesia carbon brick. The main function of the BOF is to decarburise the hot metal using pure oxygen gas.

ELECTRIC ARC FURNACE REFRACTORIES

Electric furnaces are classified as arc furnaces or induction furnaces, according to the heating method. The arc furnace is used far more extensively for steelmaking because its capacity is large and production efficiency is high.

MAGNESIA CARBON BRICK

Magnesia-Carbon Brick is resin-bonded and made with a high proportion of fused grain magnesite for very high erosion and slag resistance. It offers good oxidation resistance due to use of high purity flake graphite. Uses include Electric Arc Furnace Sidewalls, hotspots and coldspots, and ladle furnace slag lines.

MAGNESIA CARBON BRICK

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MA – Magnesia Carbon Brick is formulated for extremely high wear areas in ladle slaglines. It is manufactured with very high purity, large crystal size and 2/1 lime / silica ratio Magnesia, high purity Graphite and Antioxidants.

MC - Magnesia Carbon Brick is formulated for high wear areas in Ladle and Electric Arc Furnace Slaglines. It is manufactured with very high purity, extra large crystal size fused magnesia with a 2/1 lime / silica ratio, high purity Graphite and Antioxidants.

ME – Magnesia Carbon Brick is formulated for high wear areas in the electric arc furnaces and ladle slaglines. It is manufactured with very high purity, large crystal size and 100% (96 Grade) electro fused Magnesia, high purity Graphite and Antioxidants.

The above data are typical properties. The data is subject to reasonable variations in manufacturing and should not be used for specification purposes.

ARGON-OXYGEN DECARBURISATION (AOD) AND FIRED MAGNESIA / DOLOMITE REFRACTORIES

More than 30 years ago, most AOD Linings were constructed with Magnesia Chrome refractories. Over time the AOD linings were switched to Fired Dolomite and Fired Magnesia Enriched Dolomite. Today, virtually all AOD Linings are now constructed with these refractories.

The switch to Fired Dolomite and Fired Magnesia Enriched Dolomite has reduced refractory cost and improved Stainless Steel quality. After AOD operators switched from Magnesia Chrome refractories to Dolomite refractories, AOD Lining designs have evolved over the years, as well. Now, many lining design use three grades of dolomite; resin bonded, fired dolomite and fired magnesia enriched dolomite. Linings are also zoned by thickness.

Computer Controlled Firing and Mixing

AOD operators have been working to extend lining life. As such, Magnesia Enriched Dolomite was placed in the high wear areas of the Lining. Slaglines and Tuyere pads have been upgraded as well as certain sidewall areas.

About 8 to 10 years ago, the Chinese refractory industry began to export to industrialized nations around the world. One of the refractory products that was exported was Fired Magnesia Dolomite. Initially, Magnesia Dolomite was only exported from China to the Asian market primarily to Japan and Korea. Performance was very promising.

Over the last several years, Chinese Refractory companies began to look outside the Asian market to Europe and North America. Three years ago McKeown International came to an agreement with a major Chinese Refractory Manufacturer of Fired Magnesia Dolomite to market the product in Europe and North America.

McKeown is involved in all phases of the production, quality control and marketing. The Fired Magnesia Dolomite is made to very stringent McKeown specifications. The specifications include physical properties, chemical analysis, sizing ranges and packaging.

ULTRADOL FIRED MAGNESIA / DOLOMITE BRICK

McKeown Ultradol Brick is manufactured from naturally occurring high Magnesia Dolomite grain. It is fired at high temperature to form a very low porosity and extremely high density brick. Ultradol is uniquely suited for use in the high wear areas of stainless converters and AODs. It is also well suited for use in the high wear areas of ladle slaglines in steel plants making silicon deoxidized sheets.

LADLE REFRACTORIES

At the continuous caster, the ladle and tundish are lined with a powdery monolithic refractory material which is applied by stamping or gunning.

Magnesia Alumina Carbon Brick

JLMAC – Magnesia Alumina Carbon Brick is formulated for ladle linings. It is manufactured with very high purity electro fused Magnesia, high purity Graphite, Alumina and Antioxidants.

MAMC - Alumina Magnesia Carbon Bricks are used in Ladle Sidewall and Bottom impact areas. It is formulated with very high purity Alumina and Magnesia.

Magnesia Carbon Brick

Magnesia Carbon Brick is resin-bonded and made with a high proportion of fused grain magnesite for very high erosion and slag resistance. It offers good oxidation resistance due to use of high purity flake graphite. Uses include Electric Arc Furnace sidewalls, hotspots and coldspots, and ladle furnace slag lines.

High Alumina Brick

High Alumina refractories are made from high quality bauxite and corundum with very low impurity content. They offer great strength at high temperatures and excellent resistance to abrasion, mechanical wear, slag corrosion, metal penetration and attacks of various fluxes.