Gotrays Corundum-Mullite Liner Premium Refractory Solution for High Temperature Furnaces
![High-resolution image of Gotrays Corundum-Mullite Liner inside a high-temperature furnace]
Engineered for 1700°C Plus Endurance
Superior Thermal Shock Resistance and Longevity
| Property | Specification |
|---|---|
| Al₂O₃ Content | 70-90% |
| Max Service Temperature | 1700°C |
| Bulk Density | 2.8 to 3.2 g/cm³ |
| Thermal Conductivity | < 1.5 W/m·K at 1000°C |
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Introduction and Overview
Gotrays Corundum-Mullite Liner is a fused sintered composite made from corundum (Al2O3) and mullite (3Al2O3·2SiO2). This high-quality material is designed specifically for lining industrial furnaces that operate at extremely high temperatures.
The liner delivers exceptional refractoriness, meaning it withstands intense heat without melting or deforming. It also features low thermal expansion, reducing the risk of cracks during rapid temperature changes. Thanks to its strong erosion resistance, this product lasts up to twice as long as standard alumina refractories, providing significant cost savings over time.
This versatile furnace lining fits perfectly in tough environments like steel arc furnaces, glass melting tanks, ceramic kilns, and petrochemical reformers, making it a reliable choice for various high-temperature applications.
Technical Specifications
Here’s a quick breakdown of what makes Gotrays Corundum-Mullite Liner stand out:
| Specification | Details |
|---|---|
| Chemical Composition | Al2O3 70-90%, Mullite (3Al2O3·2SiO2) |
| Refractoriness Under Load | >1700°C |
| Cold Crushing Strength | 100-150 MPa |
| Apparent Porosity | Less than 8% |
| Linear Change After Reheating | ≤0.3% |
| Thermal Shock Resistance | Excellent, withstands rapid temperature changes |
Product Variants
-
Bricks
Standard sizes and custom cuts to fit your furnace precisely. Perfect for high alumina furnace linings.
-
Castables
Low cement formulations designed for easy pouring and shaping, ideal for petochemical refractories and other complex shapes.
-
Foamed Ceramics
Lightweight, insulating option that offers superior heat retention and energy savings in high-temperature environments.
These options make it easy to choose the right corundum mullite refractory bricks and insulation material for your specific furnace needs.
Features and Benefits
- High temperature stability keeps the liner intact without warping or deforming, handling furnace temperatures up to 2050°C melting point with ease.
- Superior thermal shock resistance means less cracking during quick heating and cooling, reducing downtime and repair costs.
- Excellent corrosion and abrasion resistance protects the lining from slag and metal wear, extending its service life noticeably.
- Low thermal conductivity helps keep heat inside the furnace, improving energy efficiency and lowering your operational expenses.
- Eco-friendly design with low emissions and recyclable materials supports sustainable manufacturing practices without compromising performance.
Applications
Gotrays Corundum-Mullite Liner works great across a range of tough industries where high heat and harsh conditions are the norm. It’s designed to handle:
- Metallurgy: Electric arc furnace roofs, blast furnace hearths
- Glass production: Melting tank sidewalls, regenerators
- Ceramics: Shuttle kilns
- Petrochemical: Reformers, gasification reactors
- Waste management: Waste incinerators, hot blast stoves
Case Study
See how Gotrays liners helped a major steel mill boost uptime by 30 percent—cutting downtime and extending furnace life with less maintenance in the process.
Installation and Maintenance Guide
Installation Steps
- Prepare the Surface: Clean and clear the furnace lining area to remove dust, grease, or loose debris.
- Choose Installation Method:
- Dry Lay: Fit Gotrays Corundum-Mullite bricks directly without mortar for quick setup.
- Cast in Place: Use low-cement mullite castables for a seamless lining, ideal for custom shapes.
- Curing Process: Gradually heat the furnace up to 200°C to help the liner settle and avoid thermal shock during startup.
Maintenance Tips
- Conduct routine inspections to check for signs of spalling or wear.
- Expect a service life of 12 to 24 months under continuous use, depending on operating conditions.
- Address any minor cracks early to prevent costly repairs later.
Safety Notes
- Always handle liners and castables wearing appropriate PPE.
- Our Corundum-Mullite products are non-toxic and asbestos-free, ensuring a safer work environment.
Why Choose Gotrays
When you pick Gotrays, you’re choosing reliability and quality backed by ISO-certified manufacturing. Our corundum-mullite liner comes in custom formulations tailored to your exact furnace needs. We offer fast, global shipping across the US and beyond, so you get what you need without delays. Plus, our 24/7 technical support means help is always just a call or click away.
Here’s what a Steel Plant Manager had to say:
“Gotrays delivered unmatched durability. Our furnace downtime dropped significantly after switching to their liners.”
We stand behind our product with solid certifications including ASTM compliance and REACH approval, making sure you get a safe, top-performing high-temperature refractory solution you can count on.
Pricing Sizing and Availability
Our Corundum-Mullite liner bricks are priced between $5 and $15 per kilogram, depending on volume. For castable options, please contact us for a custom quote.
We offer standard brick sizes of 230 by 114 by 65 mm, with custom sizes available up to 500 mm in length to fit your furnace lining needs.
All products are ready for immediate dispatch from our warehouses located in the US and EU, ensuring fast delivery and minimizing your downtime.
FAQs
What is the max temperature for Gotrays Corundum-Mullite Liner
Gotrays Corundum-Mullite Liner is designed to work reliably up to 1700°C (about 3100°F). It handles extreme heat without warping or breaking down, making it perfect for most high-temperature furnace needs.
How does it compare to zirconia corundum alternatives
Compared to zirconia corundum liners, Gotrays Corundum-Mullite offers excellent thermal shock resistance and better cost efficiency. While zirconia products have higher temperature limits in some cases, our liner provides longer service life and lower maintenance costs for steel, glass, and petrochemical furnace applications common in the U.S. market.
What is the lead time for custom orders
Custom sizes and formulations usually ship within 4 to 6 weeks from order confirmation. We work closely with manufacturers and supply chain partners in the U.S. to ensure timely delivery and minimize your downtime.
Contact and Request a Quote
Got questions or ready to upgrade your furnace lining? Reach out to us anytime. Just fill out the form with your Name, Company, Specs Needed, and Quantity. We’ll get back to you fast with a custom quote tailored for your needs.
Get instant access to:
- Download the full Spec Sheet
- Schedule a personalized Consultation
- Start a Live Chat with our technical support team
Related Products
Explore more from Gotrays for your high-temperature refractory needs:
- Gotrays High-Alumina Castables – perfect for casting and repair, offering excellent durability and heat resistance.
We’re here to help you find the right refractory solution to keep your furnace running longer and stronger.
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