K23 Insulation Brick

The raw material of K23 insulation brick is high-purity mullite. It is made by adding alumina powder and sintering at high temperatures. In addition, Kerui produces k23 insulating firebrick in accordance with international industrial standards. Moreover, it is also a new type of energy-saving insulation material.

  • Al2O3(≥): 38.8%
  • Bulk Density: 0.513g/cm3
  • Cold Crushing Strength: 1.0MPa
  • Thermal Conductivity: 0.13W/(m·K) – 0.24 W/(m·K)

KERUI JM23 Insulation Brick

Detailed Parameter of Kerui K23 Insulation Brick

ω (Al2O3)/ ≥ %38.3
ω (SiO2)/ ≤ %44.3
Bulk Density (g/cm³)0.513
Classification Temperature ()1315 (2400)
Cold Crushing Strength/MPa1.0
Thermal Expansion 1000℃(%0.8
Thermal Conductivity Coefficient ≤/[W/(m·K)]2600.13

Advantages of K23 Insulation Brick

Good Thermal Insulation
High Insulating Properties
Strong Compressive Strength
Low Heat Storage
High Purity

High Quality K23 Insulation Brick

The raw materials of Kerui fire refractory K23 are high-quality mullite and alumina. Then, it is made through our precise proportioning and high-temperature sintering process. This manufacturing process ensures products with superior physical properties and durability. Therefore, Kerui k23 insulating firebrick can provide reliable protection for industrial equipment and structures and extend their service life.

Energy Saving

Using Kerui K23 insulation brick in industrial equipment structures can reduce energy consumption. It can prevent heat loss and penetration, allowing the equipment to maintain a stable operating temperature in high temperature environments. In other words, this greatly reduces energy waste. In addition, Kerui K23 fire brick helps improve the efficiency of equipment and have a positive impact on the environment.

Easy to Install

Like jm23 brick, our k23 soft fire brick is lightweight and easy to cut, making it even more convenient during installation. In addition, the precise dimensions of Kerui K23 soft fire brick ensure the accuracy and consistency of construction. If required, insulation bricks can also be easily cut to fit equipment and structures of different shapes and sizes. Therefore, this makes the installation process more efficient and flexible.

Storage of Mullite Insulating Brick
K23 Insulation Brick for Sale
 Insulation Brick

K23 Insulation Brick Application

Kerui high-performance mullite insulation brick for sale is a good refractory material. In addition, it is also a special refractory brick with good thermal insulation properties. At the same time, insulating bricks can improve energy efficiency and maintain temperature stability. Moreover, it plays a vital role in providing reliable thermal insulation in various industrial applications.

K23 insulation brick is widely used in the thermal insulation of various industrial furnaces, electric furnaces, metallurgical furnaces, petroleum cracking furnaces, metallurgical hot blast furnaces, ceramic roller kilns, tunnel kilns, hot blast furnaces and electric porcelain crucible furnaces. In general, Kerui excellent K23 soft fire brick is widely used in industrial fields. In other words, its excellent thermal insulation and high temperature resistance make it an ideal choice in many industrial structures. Besides, K23 insulation fire brick is also used in high-temperature industries such as the metallurgical industry, steel industry, petrochemical industry, ceramic industry, glass industry and power industry. What’s more, it helps improve energy efficiency, extend equipment life and reduce energy consumption.

Applications of Kerui Products

Why Choose Kerui Refractory?

Customized Dimension

Kerui can provide a precise size of a fire brick according to the different needs of industrial applications. This means that no matter what size insulation brick you need, Kerui can provide the right product according to your requirements. So, we can ensure the best fit and effect of the insulation brick.

Advanced Production Technology

We use digital production and an industry-leading micro-controlled automatic batching system. Besides, Kerui also has two 168-meter fully automatic ultra-high temperature energy-saving and environmentally friendly natural gas tunnel kilns. So, all aspects of the production of Kerui refractory products are controllable.

Adequate Stock

No matter what quantity of K23 insulating refractory you need, Kerui can supply them in time. So, Kerui maintains sufficient stock to meet customer demand. That means you don’t have to wait long and can get the refractory products you need faster. Customers in need can contact us at any time.

One-Stop Service

Kerui provides a one-stop service. From product consultation, customization and production to delivery, we provide customers with convenient and comprehensive support. Whether you need technical consultation or sample testing, the Kerui professional team can provide you with a full range of services.

Tunnel Kiln for Insulation Brick
Tunnel Kiln Control Center



In addition to K23 insulation brick, Kerui also provides a full range of other insulating refractory bricks for customers to choose from. We can provide unmatched refractory brick performance and value for every industry and application. You can contact us on YouTube for details or customization, Kerui products have lower prices and faster delivery! Or please leave your request in the message box and we will reply to you within 24 hours!

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