Name: China Corundum Precast Block For Industry Kilns Manufacturers Suppliers Factory - Luming New Materials
Brand: Luming
SKU: 299537521

Corundum Precast Block – High-Performance Refractory Solutions

Corundum Precast Block is a premium, factory-engineered refractory precast shape designed for the most demanding high-temperature industrial applications. Manufactured from high-purity fused or sintered corundum (α-Al₂O₃ content typically ≥90–98%), combined with advanced binders and selected additives, these blocks deliver exceptional mechanical strength, thermal stability, abrasion resistance, and chemical corrosion resistance.

At Shandong Luming (www.lm-kiln.com),we engineer world-class Corundum Precast Blocks designed to withstand the most aggressive thermal, chemical, and mechanical environments. By shifting the complex casting and curing process from your site to our controlled factory environment, we deliver refractory components that offer superior density, longer service life, and zero-risk rapid installation.

Unlike traditional fired bricks or on-site castables, our corundum precast blocks are produced under strict quality-controlled conditions using precision molding, vibration compaction, controlled drying or high-temperature curing. This results in dense, uniform structures with minimal joints, superior dimensional accuracy, and consistent performance-ideal for modern industrial kilns, furnaces, and rotary kilns where downtime reduction and extended lining life are priorities.

Due to their excellent resistance to high temperature, abrasion, and chemical corrosion, corundum precast blocks are widely used in industries such as metallurgy, cement, power generation, waste incineration, petrochemical processing, and glass manufacturing.

Technical data of Corundum Prefabricated Block:

Item	Corundum refractory brick
Item	C-99
Al2O3, ≥%	99
Fe2O3, ≤%	0.1
Bulk Density, ≥g/cm³	3.2
Apparent Porosity ,≤%	16
Cold Crushing strength, ≥Mpa	100
0.2Mpa Refractoriness under load, ≥℃	1700

Item		Corundum mullite precast bricks LM-GM68
Al₂O₃ ≥		68
Bulk Density, g/cm³ ≥		2.70
Cold Crushing strength, MPa ≥	110℃×24h	60
	1300℃×3h	80
Rupture Strength ,MPa ≥	110℃×24h	8
	1300℃×3h	10
Linear Variation after burning 1300℃×3h		±0.5

Item	Cast Corundum Mullite Bricks
	CCM-80	CCM-85
Al2O3, ≥%	80	85
Fe2O3, ≤%	0.5	0.5
Bulk Density, ≥g/cm³	2.7	2.7
Apparent Porosity ,≤%	22	21
Cold Crushing strength, ≥Mpa	75	80
0.2Mpa Refractoriness under load, ≥℃	1650	1680
Thermal shock resistance(1100℃water-cooling)Times, ≥	20	20

Product Features of Corundum Precast Refractory Shape:

1.Excellent High Temperature Resistance:Corundum is one of the most stable refractory materials, with a melting point above 2000°C. Corundum precast blocks maintain structural stability and mechanical strength even under extremely high temperatures.This makes them particularly suitable for high-temperature zones of industrial kilns and furnaces.

2.Exceptional High Mechanical Strength: Cold crushing strength: ≥80–150 MPa, Refractoriness under load above 1700 °C .

3.Outstanding Slag and chemical erosion resistance and abrasion resistance

High Al₂O₃ content creates a dense, low-porosity matrix that resists penetration by acidic, neutral, and basic slags, as well as aggressive process gases at temperature.This significantly reduces wear in high-impact areas like ladle slag lines and EAF hot spots.

4.Superior Thermal Shock Resistance and low creep:Corundum precast blocks are designed with optimized microstructures that provide good thermal shock resistance, preventing cracking and spalling caused by rapid heating and cooling cycles.This property ensures long-term operational reliability.

5.Custom Engineered Shapes:We offer full design support. Based on your drawings or on-site measurements or kiln design requirements, we produce custom molds to create blocks that fit your furnace geometry perfectly, ensuring a tight, monolithic-like lining.Fully customized shapes such as burner blocks, tapping blocks, troughs, special liners, large modules Factory prefabrication ensures consistent quality and precise dimensions.

6.Rapid Installation and Reduced Downtime:Because the blocks are pre-cast and pre-dried, installation is simply a matter of laying and bonding. This reduces furnace relining time by up to 50%-70% compared to traditional brick-laying or castable pouring.

7.Consistent Factory Quality:Eliminating on-site variables like mixing errors, ambient conditions, or curing inconsistencies.

8.Minimized Joints - Large monolithic units eliminate weak points, reducing gas penetration, heat loss, and erosion channels

9.Extended service life and lower maintenance costs

Typical Applications:

Corundum precast blocks are High Performance Refractory Precast Blocks for Industrial Kilns.

They are widely used in various high-temperature industrial equipment critical zones.And They help maintain stable furnace temperatures and extend service life.Proven performance across steelmaking, glass, petrochemical, and industrial kiln environments.

1.Steel and Metallurgical Industry:Blast furnace linings,Hot blast stoves,Steel ladles,Electric arc furnaces,Tundish,Reheating Furnace,Refining furnaces.These applications require refractory materials with extremely high strength and corrosion resistance.

2.Non-Ferrous Metals:Copper smelting furnaces ,Aluminum melting and holding furnaces,etc

3. Building Industry:Cement and Lime Rotary kiln burning zones and transition zones ,Kiln inlet and outlet,Kiln hood and cooler areas,etc.Corundum precast blocks can effectively withstand high temperature and mechanical wear in cement production.

4.Power Generation:Circulating fluidized bed (CFB) boilers,Cyclone separators,High-temperature ducts.Their excellent abrasion resistance makes them suitable for high-velocity particle environments.

5.Waste Incineration:Municipal solid waste incinerators,Hazardous waste rotary kilns,Waste incinerator secondary combustion chambers,Coal gasifiers and waste-to-energy incinerator linings.Corundum refractory materials offer strong resistance to chemical corrosion and high-temperature slag attack.

6.Petrochemical and Chemical Industry:Steam reformers, cracking furnaces, gasifiers, sulfur recovery units,Reactors,secondary reformers,etc.Engineered for the high-pressure, high-temperature hydrogen and CO environments.

7.Glass Industry:Glass melting furnace regenerators,Furnace crown and side wall blocks,feeder channels and burner blocks.,especially high-alkali or borosilicate environments,Minimal contamination to glass melt and superior surface finish.

8.Ceramic kilns: Ceramic kiln furniture and car tops,Ceramic kiln high‑temperature sections

9.General Industry:High-temperature tunnel kilns,Roller hearth kiln and shuttle kiln linings,High‑temperature reactor linings,Other High‑Temperature Furnaces,Industrial boiler burner blocks,Heat treatment furnace liners,etc.

Advantages Compared with Traditional Refractory Bricks:

Item	Traditional Brick	Corundum Precast Block
Installation Efficiency	Low	High
Number of Joints	Many	Few
Structural Strength	Moderate	High
Abrasion Resistance	Moderate	Excellent
Service Life	Medium	Long
Energy Efficiency	Limited	Higher

The modular structure and fewer joints reduce heat loss and improve the overall performance of furnace linings.

Packaging & Shipping:

Safe, Reliable, Customized Delivery

Professional packaging, safe delivery, peace of mind.

All corundum precast blocks are packaged to meet buyer requirements, national standards, and industry regulations, ensuring safe transport with minimal risk of damage.

1.Shaped Products:

Stacked on sturdy pallets, wrapped with stretch film, and secured with plastic-steel straps.

2.Unshaped Materials:

Packed in 25–50 kg bags, with bulk bags for added protection.

3.Custom Solutions:

Containers, wooden cases, metal boxes, or moisture-proof marine-grade packaging - tailored to your market and project needs.

Why Choose Us?

Your Trusted Partner for High-Performance Refractory Solutions

In high-temperature industries, the performance of refractory materials directly affects equipment safety, operational efficiency, and maintenance costs.

We are committed to providing reliable, durable, and customized refractory solutions for industrial furnaces worldwide.

Proven Quality You Can Trust

We strictly follow the ISO 9001 quality management system, ensuring that every product meets international standards.

Full-process quality control from raw materials to delivery

Stable and consistent product performance.Continuous quality improvement system

Result: Reliable refractory performance and reduced operational risks

Engineering-Driven Custom Solutions

We don't just supply products - we provide complete refractory solutions.

Furnace condition analysis

Material selection optimization

Customized precast and lining design

Result: Better performance, longer service life, lower total cost

Extensive Project Experience

With years of experience in refractory applications, we have successfully supported projects in:

Rotary kilns (cement, lime, nickel, hazardous waste)

CFB boilers and power plants

Steel and metallurgical furnaces

Waste incineration systems

Result: Proven solutions for complex and demanding environments

High-Quality Raw Materials

We carefully select raw materials from trusted and certified suppliers.

Strict supplier evaluation system

Stable raw material sourcing

High-purity alumina and premium aggregates

Result: Consistent product quality and long-term durability

Advanced Manufacturing Capability

Our modern production facilities and automated lines ensure precision and stability. Fully automated production processes. Standardized manufacturing procedures

Strict process control checkpoints

Result: Uniform quality across every batch

Comprehensive Testing and Inspection

Every product is tested to ensure it meets customer requirements.

Physical and chemical testing

Batch sampling inspection

Full compliance with technical specifications

Result: Only qualified products are delivered

Fast Response & Reliable After-Sales Service

We provide efficient and professional after-sales support.

Response within 24 hours

Technical analysis and troubleshooting

Long-term service support

Result: Minimized downtime and faster problem resolution

Full Responsibility Guarantee

We stand behind the quality of our products. Replacement or refund for non-conforming products.

Responsibility for losses caused by product defects

Continuous support throughout the product lifecycle

Result: Zero risk cooperation

Focus on Long-Term Value

Our goal is not just to sell products, but to help customers achieve:

Longer furnace service life

Reduced maintenance costs

Improved energy efficiency

Result: Maximum return on investment

Global Service Capability

Our refractory materials are widely used in international markets, serving customers across multiple countries and industries.

Result: Trusted by global industrial clients

Performance Achievements:

Achieved maintenance-free and safe operation;Service life increased by 1.5 times compared to traditional refractory materials;Kiln shell (outer wall) temperature reduced by 50–120oC;Energy consumption decreased by 10–20%.