Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Steel / Foundry Furnace Solutions
Reliable refractory materials for melting, heating, heat treatment and foundry furnaces.
We supply refractory bricks, castables and insulation materials for steelmaking and foundry furnaces. Material selection is based on furnace type, operating temperature, thermal shock, abrasion and chemical conditions.
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Steel & Foundry Furnace Types
What Should Be Considered Before Choosing Refractories?
|
Operating Temperature |
Thermal Shock |
Abrasion |
Chemical Attack |
Mechanical Impact |
|
Maximum and continuous operating temperature |
Repeated heating and cooling can cause cracking and spalling |
Charging, material movement and mechanical wear can damage the lining. |
Slag, molten metal and furnace atmosphere may attack refractory materials. |
Charging and operation can cause impact damage to the working lining. |
Refractory Materials by Furnace Area
Different furnace areas are exposed to different thermal, mechanical and chemical conditions. Refractory materials should therefore be selected according to the specific area and operating conditions.
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🔥 Working / Hot Face High Alumina Brick · Refractory Castable |
High temperature · Wear · Chemical resistance |
|
🔥 High-Temperature Area High Alumina Brick · Mullite Brick |
Thermal stability · Thermal shock resistance |
|
⚙️ Charging / Impact Area High Alumina Brick · Castable |
Impact resistance · Abrasion resistance |
|
🛠 Repair Area Refractory Castable |
Repair · Complex shapes · Monolithic lining |
|
🌡 Insulation / Backup JM23 · JM26 · Ceramic Fiber |
Reduce heat loss · Improve thermal efficiency |
Material Selection Depends on More Than Temperature
Furnace temperature is only one factor in refractory selection. Mechanical impact, abrasion, thermal cycling, molten metal or slag contact and insulation requirements should also be considered.
Refractory Solutions for Different Furnace Types
Each furnace type operates under different thermal, mechanical and chemical conditions. Refractory selection should be based on the specific furnace and its operating environment
|
Induction Furnace Melting & Holding |
Electric Arc Furnace High-Temperature Steelmaking
|
Reheating Furnace Billet & Slab Heating |
Heat Treatment Furnace Controlled Heating |
Foundry Furnace Metal Melting |
| Thermal Shock · Molten Metal · Erosion |
Extreme Temperature · Thermal Shock · Slag Attack |
Thermal Cycling · Abrasion · Heat Loss |
Temperature Stability · Insulation · Thermal Cycling |
Thermal Shock · Molten Metal · Mechanical Impact |
The suitable refractory depends on furnace design, operating temperature, metal type, lining structure and service conditions.
<a href="https://www.zkdrefractories.com/e_contact/">Talk to Our Technical Team →</a>
Common Refractory Problems in Steel & Foundry Furnaces
• Cracking & Spalling:Often related to thermal shock and improper material selection.
• Rapid Wear:Caused by abrasion, charging impact or aggressive operating conditions.
• Slag / Chemical Attack:Aggressive slag or molten metal can damage the refractory lining.
• Heat Loss:Insufficient insulation can increase energy consumption.
• Short Lining Life:Often caused by selecting materials based only on temperature rating.
The right refractory depends on the complete operating environment—not temperature alone.
Recommended Refractory Materials
ZKD supplies a range of refractory and insulation materials for different steel and foundry furnace applications.
|
High Alumina Brick |
For high-temperature and wear-resistant furnace areas <a href="https://www.zkdrefractories.com/e_products/High-Alumina-Brick-6-28.html">View Product →</a> |
|
Mullite Brick |
For high-temperature areas requiring thermal stability |
|
Refractory Castable |
For monolithic linings, repairs and complex furnace areas <a href="https://www.zkdrefractories.com/e_products/Refractory-Castable-7-14.html">View Product →</a> |
|
Insulating Fire Brick |
For furnace insulation and heat-loss reduction <a href="https://www.zkdrefractories.com/e_products/Mullite-Insulation-Brick-8-24.html">View Product →</a> |
|
Ceramic Fiber |
For backup insulation and thermal efficiency <a href="https://www.zkdrefractories.com/e_products/Ceramic-Fiber-Blanket-9-1.html">View Product →</a> |
Available Grades & Typical Properties
| Product |
Al₂O₃ (%) |
Max Service Temp |
Typical Application |
|
<a href="https://www.zkdrefractories.com/e_productshow/?13-Custom-SK36-SK37-SK38-SK40-High-Alumina-Brick-Industrial-Fire-Brick-13.html">SK34 High Alumina Brick</a> |
48 |
1450 ℃ |
General furnace lining |
|
<a href="https://www.zkdrefractories.com/e_productshow/?23-55-High-Alumina-Brick--High-Temperature-Refractory-Brick-23.html">SK36 High Alumina Brick</a> |
55 |
1500 ℃ |
Higher-temperature areas |
|
<a href="https://www.zkdrefractories.com/e_productshow/?18-Mullite-Brick-18.html">Mullite Brick</a> |
60-75 |
1550-1700 ℃ |
High-temperature areas |
|
<a href="https://www.zkdrefractories.com/e_productshow/?20-JM23-Insulation-Brick--IFB-Lightweight-Mullite-Brick-20.html">JM23 Insulating Brick</a> |
42 |
1260 ℃ |
Insulation |
|
<a href="https://www.zkdrefractories.com/e_productshow/?21-JM26-Insulation-Brick--Lightweight-IFB-for-Kiln-Insulation-21.html">JM26 Insulating Brick</a> |
48 |
1430 ℃ |
Higher-temperature insulation |
|
<a href="https://www.zkdrefractories.com/e_productshow/?31-Low-Cement-Castable-Manufacturer--High-Strength-Refractory-Castable-31.html">Low Cement Castable</a> |
60-80 |
1450-1700 ℃ |
Repair / monolithic lining |
Why Choose ZKD for Steel & Foundry Refractories?
Complete Refractory Package
Bricks, castables and insulation materials from one supplier.
Customized Shapes
Special shapes and dimensions can be manufactured according to drawings.
Material Selection Support
Recommendations based on furnace type and operating conditions.
Factory Direct Supply
Direct supply from our refractory manufacturing facility.
How We Manufacture Your Refractories
Raw Material → Pressing → Drying → Tunnel Kiln Firing → Quality Inspection → Packing
Steel & Foundry Furnace FAQ
1. What refractory materials are used in steel furnaces?
Steel furnaces may use different refractory materials depending on the furnace type, temperature, slag conditions and lining area. High alumina bricks, refractory castables, mullite bricks and insulating materials can be considered for different applications.
2. What refractory materials are suitable for induction furnaces?
The suitable refractory depends on the furnace design, metal being melted, operating temperature and lining requirements. High alumina refractories and suitable castables can be considered for areas exposed to high temperature, thermal shock and molten metal.
3. How do I choose refractory materials for a foundry furnace?
Consider the operating temperature, metal type, thermal cycling, abrasion, mechanical impact and chemical conditions. The lining structure and application area should also be considered when selecting the refractory.
4. What refractory materials are suitable for high-temperature furnace areas?
High alumina bricks, mullite bricks and suitable refractory castables can be used depending on the required temperature, thermal stability and operating conditions.
5. Can refractory bricks be customized according to furnace drawings?
Yes. ZKD can manufacture refractory bricks in customized dimensions and shapes according to customer drawings, specifications and furnace requirements.
6. Can ZKD supply a complete refractory package for steel and foundry furnaces?
Yes. We can supply refractory bricks, castables and insulation materials from one source, with customized sizes, packaging and technical support available according to project requirements.
Need Refractory Materials for Your Furnace?
Tell us your furnace type, operating temperature, lining dimensions and service conditions. Our team can recommend suitable refractory materials for your application.
<a href="https://www.zkdrefractories.com/e_contact/">Get a Quote</a>
