Fire Clay Mortar is a high-quality refractory jointing and bonding material designed for masonry and repair of fire clay bricks in industrial furnace applications. It is formulated using high-grade fire clay clinker, refined plastic clay, and functional binders, ensuring stable adhesion and reliable performance under high-temperature conditions.

As a key component in refractory masonry systems, Fire Clay Mortar is used to fill joints between bricks, compensate for dimensional deviations, and improve the overall integrity of furnace linings. Compared with ordinary mortar materials, it provides better thermal stability, improved sealing performance, and enhanced resistance to furnace atmosphere erosion.

Xintai Fire Clay Mortar is widely used in steel, cement, glass, ceramic, and petrochemical industries, where furnace durability and operational efficiency are critical.

Technical Specifications

Grade	Al₂O₃ (%)	Refractoriness (℃)	Cold Flexural Strength (110℃×24h)	Sintered Strength (1200℃×3h)	Permanent Linear Change (%)	Bonding Time (min)
NN-30	≥30	≥1620	≥1.0 MPa	≥3.0 MPa	-5 ~ +1	1–3
NN-38	≥38	≥1680	≥1.0 MPa	≥3.0 MPa	-5 ~ +1	1–3
NN-42	≥42	≥1700	≥1.0 MPa	≥3.0 MPa	-5 ~ +1	1–3
NN-45	≥45	≥1720	≥1.0 MPa	≥3.0 MPa	-5 ~ +1	1–3
NN-45P	≥45	≥1720	≥2.0 MPa	≥6.0 MPa	-5 ~ +1	1–3

Key Features

High Temperature Stability: Fire Clay Mortar maintains stable performance at temperatures up to 1720℃, suitable for various industrial furnace conditions.
Excellent Bonding Strength: Ensures strong adhesion between refractory bricks, forming a dense and durable furnace lining structure.
Good Plasticity & Workability: Fine particle distribution provides smooth application and easy construction in complex masonry structures.
Thermal Shock Resistance: Performs reliably under repeated heating and cooling cycles, reducing cracking and joint failure.
Chemical Resistance: Resistant to furnace gases, slag penetration, and alkaline environments, extending service life.
Stable Volume Performance: Low permanent linear change ensures structural stability during firing and operation.

Typical Applications

Hot Blast Furnace: Used for high-temperature masonry joints requiring long-term thermal stability and structural reliability.
Coke Oven: Applied in carbonization chambers and furnace walls to ensure airtight sealing and durability.
Glass Industry: Used in glass melting furnaces, regenerators, and heat recovery zones.
Acid-Resistant Kilns: Suitable for furnaces exposed to acidic gases and corrosive environments.
Other Industrial Furnaces: Ceramic kilns, Reheating furnaces, Thermal processing systems, Industrial incinerators

Production Details

Raw Materials: High-quality fire clay clinker, refined plastic clay, alumina-based additives, and performance-enhancing binders are carefully selected to ensure stable high-temperature bonding properties.
Manufacturing Process:

Raw material selection and screening
Precision grinding and particle size control
Controlled batching and homogenization
Binder integration and mixing
Moisture-proof packaging

Quality Control:

Each batch undergoes strict testing, including:

Chemical composition analysis
Refractoriness verification
Bonding strength testing
Particle size distribution inspection
Thermal stability evaluation

Packing and Shipping Details

Standard Packing: 25 kg moisture-proof paper bags with inner PE lining
Bulk Packing: Jumbo bags available upon request.
Palletizing: Wooden pallets with shrink wrapping for enhanced protection during transportation.
Shipping Methods: By sea, by truck, or by rail.
Delivery Form: Dry powder, ready for on-site mixing.

All products are securely packed to prevent moisture absorption and damage during transportation.