Zircon Fireclay

Zirconia Fireclay achieves “integrated” sintering and synergistic performance with main bricks at high temperatures through precise blending of zirconia raw materials of varying particle sizes and micron-grade additives. Its core technology lies in perfectly matching the chemical inertness and low thermal expansion characteristics of zirconia bricks, thereby forming a robust defense at the weakest point—the brick joints:

Perfect Performance Matching: Chemical composition and thermal expansion coefficient closely align with zirconia bricks, ensuring coordinated deformation from ambient to operating temperatures and eliminating interfacial cracking.

Superior Erosion and Permeability Resistance: Forms a stable zirconia-phase-dominant ceramic bond at high temperatures, providing equivalent resistance to molten glass, acidic/neutral slag, and molten metals as the main bricks, effectively preventing preferential joint erosion.

Exceptional High-Temperature Structural Strength: After high-temperature firing, a high-strength sintered bond forms between bricks, transforming the masonry into a solid monolithic structure rather than individual blocks.

Excellent Workability: Features good water retention, adhesion, and spreadability, ensuring full, dense mortar joints with uniform, controllable thickness.

Key Technical Specifications:

- Primary Chemical Composition: ZrO₂ + SiO₂ ≥ 97% (Matching main bricks)

- Particle Size: ≤ 0.5mm

- Workability Time: Adjustable per requirements

- Room Temperature Bond Strength (110°C dried): ≥ 2.0 MPa

- High-temperature flexural bond strength (1500°C, 3h): ≥ 4.5 MPa

- Refractoriness: ≥ 1790°C

- Service temperature range: ≤ 1700°C

Zirconia fireclay is an indispensable supporting material for the construction of all high-end, highly corrosive industrial furnaces utilizing zirconia bricks. Its primary applications include:

1. Critical erosion zones in glass melting furnaces: Masonry and sealing of zirconia brick structures including pool walls (especially liquid line), flow channels, charging ports, and facing bricks.

2. Specialty glass melting furnaces: Zirconia brick structures directly contacting molten glass in optical glass, electronic display glass, and pharmaceutical glass furnaces.

3. Metallurgical continuous casting systems: Assembly and bonding of zirconia-based submerged nozzles, long nozzles, and integral stopper rods for continuous casting.

4. Non-ferrous metal smelting furnaces: Masonry of zirconia brick linings in zinc, copper, lead, and other smelting furnaces.

5. Ceramic and Environmental High-Temperature Equipment: Masonry of zircon bricks in highly corrosive environments such as advanced frit kilns and hazardous waste melting furnaces.

6. Maintenance and Gap Sealing: Used for localized repair, joint grouting, and seal reinforcement of existing zircon brick masonry.

Zhengzhou Chaoyu Refractories Co., Ltd. deeply understands the decisive impact of supporting materials on the overall lifespan of kilns, providing customers with fireclay solutions that exceed expectations:

Expert-level consultation: We not only supply fireclay products but also offer chemical composition verification and matching recommendations based on the specific zirconia brick brand and model used by the customer, ensuring absolute reliability.

Stringent Raw Material and Production Control: Utilizing premium zircon sand of the same grade as high-end zircon bricks, we guarantee the inherent purity and high-performance foundation of our slurries.

Full Process Construction Support: We provide comprehensive, detailed operational guidelines covering everything from slurry mixing water quality requirements, mixing techniques, and bricklaying methods to drying and baking curves.

On-Site Supervision for Critical Projects: For major projects like glass furnace overhauls, we offer on-site technical representative services to oversee construction quality and ensure optimal bricklaying results.

Integrated Supply and Logistics: Coordinated production and shipment with zirconia bricks ensures matching materials arrive simultaneously at the construction site, safeguarding project timelines.

Performance Validation and Data Support: Upon request, provide high-temperature performance comparison test data, clearly demonstrating the significant difference in masonry erosion resistance between specialized refractory mortar and standard mortar.

The value of zirconia bricks demands equally exceptional zirconia refractory mortar to safeguard and deliver. Choosing complementary products from Zhengzhou Chaoyu Refractory Materials Co., Ltd. represents a solemn commitment to the longevity of the entire masonry system. To obtain samples for compatibility testing or discuss specific construction technical solutions, contact our technical sales team immediately.