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What is the use of magnesia carbon brick

Introduction to Magnesia Carbon Bricks

MgO-C Bricks, often called mag carbon bricks, are crucial in steelmaking. The United States developed these materials in the mid-1960s. They have been widely adopted worldwide. By the 1970s, Japan used magnesia carbon bricks in electric arc furnaces (EAF). This change enhanced the efficiency of their operations.

The Evolution and Application of Magnesia Carbon Bricks

  • Historical Development

MgO-C Brick became popular in the steel industry. They were first used in electric arc furnaces. In the early 1980s, they were also used in basic oxygen furnaces (BOF). This marked an advancement in steelmaking.

  • Composition and Properties

Mag carbon bricks consist of magnesia (MgO) and graphite (C). They use phenolic resin as a binder. This combination withstands temperatures up to 1700°C. The high melting point of magnesia and the thermal conductivity of graphite make these bricks ideal for high temperatures.

  • Key Properties
  1. High thermal resistance: Capable of withstanding extreme temperatures without degrading.
  2. Excellent slag resistance: The carbon component provides superior resistance to corrosive slags.
  3. Thermal shock resistance: The ability to endure rapid temperature changes without cracking.

Applications in Steelmaking

Electric Arc Furnaces (EAF)

In EAF steelmaking, magnesia carbon bricks are used extensively to line the furnace walls and hearth. The high thermal resistance and slag resistance properties of these bricks help extend the life of the furnace lining, thereby reducing downtime and maintenance costs.

electric arc furnace steel making process

Basic Oxygen Furnaces (BOF)

These bricks also line BOFs. They protect against the heat and corrosive environment from oxygen blowing. British furnaces achieve 1000-1500 heats per lining. Japanese furnaces achieve 2000-2500 heats per lining.

Basic Oxygen Furnaces

Advantages of Using Magnesia Carbon Bricks

Enhanced Furnace Longevity

Mag carbon bricks extend furnace life. Their thermal and slag resistance reduce the need for frequent replacement. This leads to significant cost savings.

Improved Steel Quality

High-quality magnesia carbon bricks improve steel quality. They minimize contamination, ensuring steel retains desired properties.

Cost-Effectiveness

These bricks are cost-effective in the long run. Their durability reduces maintenance shutdowns. This increases overall productivity.

Research and Innovation

Research focuses on enhancing MgO-C Brick. Innovations include new bonding agents and nano-sized carbon additives.

Environmental Considerations

The steel industry moves towards sustainability. Eco-friendly mag carbon bricks are gaining attention. Researchers explore ways to reduce their carbon footprint.

MgO-C Brick revolutionized steelmaking. They provide a durable, cost-effective solution for furnace linings. Their thermal and slag resistance properties are indispensable. As research advances, mag carbon bricks promise even greater performance and sustainability.

Understanding MgO-C Brick helps industry professionals. They ensure operations run efficiently and effectively. Mag carbon bricks will remain a cornerstone of steel production.

Using magnesia carbon bricks improves steelmaking processes. They enhance efficiency, steel quality, and furnace life. This ensures competitive and sustainable operations.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

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As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

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