Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Refractory Mortar
Refractory Mortar | High-Temperature Fireclay Bonding Mortar
Refractory mortar is a bonding material specifically designed for high-temperature environments, used for laying or repairing refractory bricks and sealing joints in high-temperature equipment. Based on material composition, it can be classified into clay-based, high-alumina, silica-based, and magnesia-based refractory mortar. It consists of refractory powder, binders, and additives. While its strength at room temperature is relatively low, it forms a high-strength ceramic bond at elevated temperatures. The particle size of refractory mortar varies depending on usage requirements, with a typical maximum particle size of less than 1mm, and in some cases, less than 0.5mm or even finer.
Characters of Refractory Mortar:
• 🛠️Good plasticity and convenient construction;
• 🔗High bonding strength and corrosion resistance;
• 🔥High fire resistance, up to 1650 ℃± 50 ℃;
• 🛡️Good slag resistance and invasiveness;
• 🔄Good thermal peeling property.
Typical Applications of Refractory Mortar:
•🏭 Refractory Brick Joint Bonding in Industrial Furnaces：Used for seamless bonding of firebricks in high-temperature industrial furnaces.•🔥 Kiln and Incinerator Linings：Ideal for constructing durable linings in kilns, rotary furnaces, and waste incinerators.
•🔧 High-Temperature Boiler Repairs：Effective for patching cracks or erosion in boilers exposed to extreme heat and pressure.
Production Process of Refractory Mortar:
Parameters of Refractory Mortar:
Classification of Refractory Mortars by Main Material Composition：
FAQ:
Type
Main Composition
Refractory Temperature Range
Key Features
Typical Applications
High Alumina Refractory Mortar
Al₂O₃ ≥ 65%
1400–1750°C
Excellent slag resistance, good thermal shock stability
Rotary kilns, steel ladles, electric furnace linings
Fireclay Refractory Mortar
Alumino-silicate fireclay
1400–1750°C
Cost-effective, easy to apply
Chimneys, heating furnaces, domestic fireplaces
Mullite Refractory Mortar
Mullite aggregate
1400–1750°C
Low thermal expansion, long service life
Glass kilns, ceramic kilns
Magnesia Refractory Mortar
MgO ≥ 80%
Above 1700°C
Alkaline resistance, strong slag corrosion resistance
Glass kilns, ceramic kilns
Silicon Carbide Refractory Mortar
SiC ≥ 70%
Above 1700°C
High thermal conductivity, wear-resistant
Roasting furnaces, coke ovens, boiler linings
Q: What is refractory mortar used for?
A: Refractory mortar is a specialized bonding material designed to join firebricks and high-temperature insulating materials. It withstands extreme heat, corrosion, and thermal cycling, making it ideal for use in kilns, furnaces, boilers, fireplaces, and chimneys.
Q:What is the difference between fireclay mortar and high alumina mortar?
A:•Fireclay Mortar: Contains lower Al₂O₃ content (approx. 30–45%), suitable for medium-temperature applications (1300–1400°C).
•High Alumina Mortar: Contains higher Al₂O₃ (≥ 65%), provides superior slag resistance and thermal shock performance, ideal for industrial kilns operating at 1400–1750°C.
Q: How do I choose the right type of refractory mortar for my application?
A: It depends on several factors:
•Service temperature
•Chemical environment (acidic, basic, neutral)
•Type of structure (furnace, fireplace, rotary kiln, etc.)
•Installation method (manual laying, gunning, self-leveling)
You can consult contact our technical support for tailored recommendations.
Q:What is the shelf life of refractory mortar?
A:ypically 6 to 12 months if stored in a dry, cool, and sealed environment. Moisture or prolonged storage may reduce bonding performance. Please refer to the product’s technical data sheet.
Q:Do you offer OEM/ODM services for fireplace or chimney mortar?
A:Absolutely. We provide customized packaging, branding, and formula adjustments for fireplace and chimney applications. Contact us for OEM collaboration details.
Q:Can refractory mortar be exported internationally?
A:Yes. We export to over 30 countries and offer customizable packaging (25kg bags, 50lb sacks, jumbo bags) that meet international shipping standards.
Q: Do you provide installation guides or videos?
A:Yes, we offer downloadable manuals, video tutorials, and technical support for proper installation, drying, and curing. Please check our [Technical Support] section.
Q: How do I inquire or get a quote for bulk refractory mortar?
A:Please fill out our [RFQ form] or contact us directly via email/WhatsApp. Let us know your required quantity, specifications, and destination port for a prompt quote.
