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How to Extend the Service Life of Bricks for Metallurgical Furnaces? Sharing of Measured Data on the Slag Resistance of Ordinary Magnesite-Chrome Bricks

2025-10-22
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How to extend the service life of bricks for metallurgical furnaces? This article delves deep into the measured data on the slag resistance of ordinary magnesite-chrome bricks, revealing their stable performance and application value in high-temperature industries. Through a comparison of the performance advantages of magnesite bricks, real customer cases, and typical application scenarios, it helps you understand why ordinary magnesite-chrome bricks have become the key solution for extending furnace service life and reducing operation and maintenance costs.
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In high-temperature industries such as metallurgy and glass manufacturing, furnace bricks face numerous challenges. Erosion from molten slag and thermal shock damage are common pain points that significantly reduce the lifespan of furnace kilns, leading to increased maintenance costs and production interruptions. This article delves into the application of ordinary magnesia-chrome bricks in high-temperature industries, aiming to provide solutions to these problems.

Core Characteristics of Ordinary Magnesia-Chrome Bricks and Their Solutions

Ordinary magnesia-chrome bricks possess several core characteristics that effectively address the challenges in high-temperature industries:

High Strength

With a compressive strength of up to 50 MPa, ordinary magnesia-chrome bricks can withstand the high pressure generated during the operation of furnace kilns, ensuring the structural integrity of the kiln lining and preventing collapse and damage.

Excellent Slag Resistance

According to experimental data, the slag penetration depth of ordinary magnesia-chrome bricks is only 10 - 15 mm after 100 hours of continuous contact with molten slag at 1600°C, significantly lower than that of traditional magnesia bricks. This outstanding slag resistance effectively prevents the erosion of molten slag on the kiln lining, thereby extending the service life of the furnace kiln.

Comparison of slag resistance between ordinary magnesia-chrome bricks and traditional magnesia bricks

Strong Thermal Shock Stability

Ordinary magnesia-chrome bricks can withstand 30 - 50 thermal shock cycles at a temperature difference of 1000°C without significant cracking or spalling, ensuring stable performance in environments with frequent temperature changes and reducing the risk of damage caused by thermal shock.

Specific Application Scenarios

Ordinary magnesia-chrome bricks have wide applications in various high-temperature industries:

  • Metallurgy Industry: Used in the lining of steelmaking converters, electric arc furnaces, and ladles to resist the erosion of molten steel and slag, improving the efficiency and lifespan of the furnace.
  • Glass Manufacturing Industry: Applied in glass melting furnaces to withstand the high temperature and chemical corrosion of molten glass, ensuring the quality and stability of glass production.

Performance Comparison with Traditional Magnesia Bricks

To better understand the advantages of ordinary magnesia-chrome bricks, a performance comparison with traditional magnesia bricks is presented below:

Performance Index Ordinary Magnesia-Chrome Bricks Traditional Magnesia Bricks
Compressive Strength (MPa) 50 30
Slag Penetration Depth (mm) 10 - 15 20 - 30
Thermal Shock Cycles 30 - 50 10 - 20
Graphical comparison of performance between ordinary magnesia-chrome bricks and traditional magnesia bricks

Enterprise Use Cases

A metallurgical enterprise replaced the traditional magnesia bricks in its electric arc furnace with ordinary magnesia-chrome bricks. After six months of operation, the service life of the furnace lining was extended by 40%, and the maintenance cost was reduced by 30%. At the same time, the stability of the production process was significantly improved, and the product quality was also enhanced.

Enterprise use case of ordinary magnesia-chrome bricks

Let your furnace kiln run 30% longer - ordinary magnesia-chrome bricks are changing the industry standards. If you want to further understand this product or obtain technical data, click here to learn about the furnace kiln adaptation plan suitable for you.

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