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Refractory Products Expert Since 2004

Zhengzhou Kerui Industrial Development Co., Ltd. delivers high-performance refractory and insulation solutions for high-temperature industrial applications worldwide.

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About Zhengzhou Kerui

Kerui Refractory, as an expert and leader, provides refractory and insulation design solutions for customers in high-temperature industrial applications. With over 20 years of direct manufacturing experience, we offer a wide range of standard and customized refractory products trusted by clients across the globe.

Our commitment to quality, innovation, and customer service has made us a preferred partner in industries such as steel, aluminum, non-ferrous metals, ceramics, and petrochemicals.

20+ Years Experience

Direct refractory brick factory with decades of production excellence.

Global Reach

Serving clients in Vietnam, Saudi Arabia, Russia, Colombia, and beyond.

Mullite Insulation Bricks Shipment

Our Product Categories

Refractory Bricks

  • • Used as inner kiln lining, direct fire contact
  • • Stable performance at high temperatures
  • • Includes high alumina, fire clay, AZS, magnesia

Insulation Bricks

  • • Outer insulation layer, no direct flame contact
  • • Low thermal conductivity, energy-saving
  • • Customizable shapes and sizes

Ceramic Fiber Products

  • • Lightweight, flexible insulation solutions
  • • Includes blanket, board, and modules
  • • Ideal for complex furnace structures

Monolithic Refractories

  • • Castables, ramming mass, gunning mix
  • • Perfect for irregular shapes and repairs
  • • Reduces joints, extends furnace life

Kiln Furniture

  • • Supports and protects materials during firing
  • • Includes silicon carbide and cordierite shelves
  • • Maximizes kiln loading capacity

Acid Resistant Bricks

  • • Resistant to chemical corrosion
  • • Ideal for aggressive environments
  • • Long service life under acidic conditions

Featured Products

Ceramic Fiber Blanket

Ceramic Fiber Blanket

Lightweight, flexible insulation material ideal for kilns, furnaces, and high-temperature equipment. Excellent thermal stability and low heat storage.

  • • Temperature resistance up to 1430°C
  • • Low thermal conductivity
  • • Easy to cut and install
Ceramic Fiber Blanket in Box

Ceramic Fiber Board

Rigid, high-density board for structural insulation in industrial furnaces. Offers excellent mechanical strength and dimensional stability.

  • • Max use temperature: 1400°C
  • • High compressive strength
  • • Low thermal shrinkage
Ceramic Fiber Module

Ceramic Fiber Module

Pre-fabricated hot-face lining solution for quick installation. Ensures uniform compression and long-term performance in high-heat zones.

  • • Bolted or anchored installation
  • • Eliminates cold spots
  • • Reduces energy loss
High Alumina Brick

High Alumina Brick

Durable refractory brick with high alumina content for extreme temperature environments. Ideal for steel ladles, kilns, and boilers.

  • • Al2O3 content: 48%–85%
  • • High thermal shock resistance
  • • Long service life
Corundum Mullite Brick

Corundum Mullite Brick

Premium-grade brick with excellent creep resistance and structural strength. Used in high-wear, high-temperature zones.

  • • High purity raw materials
  • • Superior load-bearing capacity
  • • Customizable dimensions
Mullite Insulation Brick

Mullite Insulation Brick

Low-density brick with excellent thermal insulation properties. Reduces fuel consumption and improves energy efficiency.

  • • Bulk density: 0.8–1.0 g/cm³
  • • Max use temp: 1790°C
  • • Low thermal conductivity
Silicon Carbide Kiln Shelves

Silicon Carbide Kiln Shelves

High-strength shelves for ceramic and industrial firing. Resistant to thermal shock and deformation at high temperatures.

  • • Max temp: 1350°C
  • • High load capacity
  • • Long service life
Refractory Castable

Refractory Castable

High-performance monolithic lining material for complex shapes and repairs. Easy to pour and set with excellent bonding strength.

  • • High alumina and corundum types
  • • Good flowability
  • • Rapid curing options
Cordierite Kiln Shelves

Cordierite Kiln Shelves

Thermally stable shelves ideal for periodic kilns. Excellent resistance to thermal cycling and warping.

  • • Max temp: 1300°C
  • • Low thermal expansion
  • • Lightweight and durable

Client Success Stories

"This is my 5th year working with Kerui. I have to say the quality is truly trustworthy. Every time I provide clients with multiple quotations, Kerui’s always stands out. High alumina bricks from Kerui also have a high customer repurchase rate. We complement each other, and they are my most trusted refractory supplier."

CL

Long Term Trader

Colombia

"We amazingly find that since using Kerui corundum castable, the service life of our steel ladle has increased from 65 to 82 times. We also found that the castable fluidity during construction was just right, significantly improving worker efficiency. Very happy to have a truly effective product and manufacturer."

SE

Steel Ladle Engineer

Vietnam

"Last year, I purchased ceramic fiber modules, silica bricks and refractory mortar from Kerui, and production was completed in just over 50 days. The export process was also very smooth, and I received a full set of technical documentation in English. The after-sales response was exceptionally fast."

NU

End User

Non-ferrous Industry, Saudi Arabia

"Very happy to work with Kerui. We’ve met several times at exhibitions in Russia. Their team is very professional. Whether you ask them technical questions or they come to your construction site to provide guidance, you will feel that they are very efficient."

AI

Customers in Aluminum Industry

Russia

Get in Touch

Ready to discuss your refractory needs? Contact Zhengzhou Kerui for expert advice, product quotes, or technical support.

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