JM23 Insulation Brick

JM23 Insulation Brick is a kind of mullite insulation brick. Unlike other insulation bricks, JM23 brick can directly contact the flame and have a wider range of applications. Kerui offers JM23 insulation brick reference price starts from 3000USD per ton.

  • 42-48%

    Al2O3 (≥)

  • 0.6-1.0g/cm³

    Bulk Density

  • 0.19-0.31 W/(m·K)

    Thermal Conductivity

  • 1.5-3.0MPa

    Cold Crushing Strength

Technical Parameter of KERUI JM23 Insulation Brick

According to industry standards in the America, the market generally distinguishes mullite insulation bricks as JM series. Among them, JM23 is one of the best-selling models. This kind of brick is also called K23 insulation brick. Here are technical details about insulating firebrick J23. Please contact us to find more information.

ω (Al2O3)/ ≥ %424548
ω (Fe2O3)/ ≤ %1.2 1.0 1.0
Bulk Density (g/cm³)0.60.80 1
Cold Crushing Strength/MPa1.5 2.33.0
Permanent Linear Change/% (T/℃*12h)126013001300
Thermal Conductivity Coefficient ≤/[W/(m·K)] (350℃)

Advantages of JM23 Insulation Brick

High Refractoriness
Low Thermal Conductivity
Light Weight
Good Insulation Effect
Low Impurity
High Strength

More Cost-effective JM23 Insulation Brick

Compared to other mullite insulation bricks (JM26/28/30…), insulating firebrick JM23 is popular because of the price advantage. Despite the lower mullite insulation fire brick price, they provide excellent insulation properties, effectively reducing energy consumption in kilns and furnaces. Besides, the superior thermal insulation of JM23 bricks helps to maintain stable temperatures. This results in energy savings and reduced operating costs.

Better Performance in High Temperature

This brick has a high aluminum content, which gives it the ability to withstand and directly come into contact with flames. Therefore, this characteristic ensures their stability and integrity even in high-temperature environments. Besides, this brick effectively resist thermal shock and maintain their structural integrity, which makes them suitable for applications that involve exposure to extreme temperatures. Moreover, this brick is also called k23 insulating firebrick.

Longer Service Life

The JM23 brick is highly durable and resistant to damage, both in terms of high temperatures and mechanical stress. Besides, they have excellent strength and are less prone to cracking or breaking under thermal expansion and contraction. Besides, this durability extends the service life of the bricks, which reduces the need for frequent replacements and results in cost savings over time. Here are many cases about using insulation bricks on Pinterest.

Main Applications of JM23 Insulation Brick

In fact, as long as your kiln involves insulation, you need mullite JM23 bricks. This product is suitable for lining cracking furnaces, hot blast furnaces, ceramic roller kilns, electric porcelain drawer kilns, glass crucibles and various electric furnaces. Besides, you can use this product as hot blast furnace top, blast furnace body and bottom, glass melting kiln regenerator, ceramic sintering kiln, petroleum cracking system dead corner furnace lining, etc.

Buy JM23 Insulation Brick from Kerui Refractory

As an experienced insulating fire brick manufacturer, Kerui Refractory has advantages in the production of insulation bricks. Additionally, our factory is located in Xinmi City, Henan Province, welcome to visit at any time! Here are a few reasons why should you buy JM23 insulation bricks from Kerui Refractory:

Advanced Manufacturing Process

The insulating firebrick JM23 is manufactured using a process that incorporates high-quality raw materials, automated batching equipment, high-tonnage presses and surface polishing of the molybdenum brick exterior. Therefore, the advanced process guarantees the superior quality and structural integrity of our insulation bricks.

International Certificates

Kerui insulating firebrick J23 has undergone rigorous testing and has received ISO, CE and SGS certifications. Therefore, these certifications are a testament to the quality and reliability of our products. Therefore. you can trust that our insulation bricks meet international standards and adhere to strict quality control measures.

Strict Quality Control

Quality is of utmost importance to us, and we have implemented strict quality control measures throughout the production process. From the selection of raw materials to the final inspection of the finished products, we ensure that every step meets our high standards. Additionally, our alumina insulation products have high purity in terms of raw materials and finished products undergo thorough testing to guarantee the performance.

Customize Production

Customers can customize the size, composition, bulk density and many other specifications to meet the actual use in the production site. Moreover, Kerui experienced team will work closely with you to ensure that the JM23 Bricks are tailored to your requirements. Therefore, both working efficiency and kiln performance can be highly improved.

Fast Delivery

Kerui factory maintains a stock of standard-sized or 19 insulating firebrick J23, allowing for fast delivery. For customized orders, we strive to deliver within 7-10 days. Moreover, our efficient logistics system ensures that your order is processed and dispatched promptly. Therefore, it minimizes any delays and keeping your project on track.

After-sales Service

We provide excellent customer service and support. Our team of experts is available to provide technical guidance and assistance throughout your project. Moreover, we value our customers and aim to build long-term partnerships through reliable products and exceptional after-sales service.


JM23 insulation brick is highly suitable for customers who require better quality and more affordable price. It is a wise choice to use this product as the insulation layer in your kiln and furnace. Contact Kerui Group China now to get a quick reply!

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