Silica Mortar is a high-performance refractory jointing material designed for masonry and repair of silica refractory bricks in high-temperature industrial furnaces. It is manufactured from high-purity silica powder, silica brick powder, carefully selected binders, and functional additives, ensuring excellent bonding performance and stable high-temperature behavior.
Compared with general fireclay mortar, silica mortar provides superior compatibility with silica bricks, better load-bearing stability, and enhanced resistance to thermal deformation. It maintains strong joint integrity under repeated heating and cooling cycles, effectively reducing cracking, joint erosion, and structural failure.
Xintai Silica Mortar is engineered for demanding industrial environments, where furnace stability, airtight lining, and long service life are critical requirements. It is widely applied in hot blast furnaces, coke ovens, glass melting furnaces, acid-resistant kilns, and other high-temperature thermal systems.
Technical Specifications
| Grade | SiO₂ (%) | Fe₂O₃ (%) | Refractoriness (℃) | Load Softening (0.2MPa) ℃ | Flexural Strength (MPa, 110℃×24h) | Bonding Time (min) |
|---|---|---|---|---|---|---|
| GNR-94 | ≥94.0 | ≤1.0 | ≥1680 | ≥1580 | ≥1.0 | 1–2 |
| JGN-92 | ≥92.0 | ≤1.0 | ≥1660 | ≥1500 | ≥1.0 | 1–2 |
| BGN-96 | ≥96.0 | ≤0.8 | ≥1720 | ≥1620 | ≥0.8 | 2–3 |
| GGN-94 | ≥94.0 | ≤1.0 | ≥1700 | ≥1600 | ≥0.5 | 1–2 |
Key Features
- High Refractoriness: Silica Mortar withstands temperatures up to 1680–1720℃, ensuring stable performance in extreme furnace conditions.
- Excellent Bonding Performance: Forms strong and durable joints between silica bricks, improving overall furnace lining integrity.
- Good Thermal Shock Resistance: Designed to withstand repeated heating and cooling cycles without cracking or joint failure.
Superior Slag and Chemical Resistance: Resistant to deformation and maintains structural consistency under high-temperature load conditions.
Optimized Particle Composition: Fine grading ensures uniform slurry formation and improved masonry workability.
Fast Construction Efficiency: Short bonding time (1–2 minutes) improves construction speed and reduces downtime.
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 silica sand, silica brick powder, refined binders, and performance-enhancing additives are selected to ensure high refractoriness and stable bonding strength.
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.
Frequently Asked Questions (FAQ)
Q1: What is Silica Mortar used for?
It is used as a jointing and bonding material for silica bricks in high-temperature industrial furnace construction.
Q2: What is its maximum working temperature?
It can withstand service temperatures up to 1680–1720℃, depending on the grade.
Q3. How is Silica Mortar prepared before use?
It is mixed with water or chemical binder until a uniform slurry is formed.
Q4: Which industries use this product?
It is widely used in steel, glass, coke oven, ceramic, and chemical furnace industries.
Q5: Does it match silica brick expansion behavior?
Yes, its formulation is optimized to closely match silica brick thermal expansion characteristics, ensuring structural stability.
