Zircon Brick

Zirconia–Silica Refractory Bricks I. Main Product Types Standard Zirconia–Silica Brick (ZS-65): Composition: ZrO₂ 65±2%, SiO₂ 32±2%. Characteristics: Bulk density 3.5–3.8 g/cm³; apparent porosity ≤18%. Applications: Upper structures of glass furnaces. Zirconia-Reinforced Type (ZSM-75): Contains 8–12% monoclinic ZrO₂, increasing thermal shock resistance to 25 cycles under 1100°C water quenching. Suitable for: Tundish permeable bricks. Composite Zirconia–Mullite Gradient Structure (ZrO₂ gradient from 40% to 15%): Thermal conductivity reduced by 30%. II. Intelligent Production Process Raw Material Processing: Microwave Calcination of Zircon Sand (1500°C for 2 hours). Particle Size Control: #3–1 mm: 1–0.1 mm; <0.1 mm. Low-Temperature Bonding Technology: Aluminum Phosphate Binder (firing temperature reduced to 1450°C), reducing CO₂ emissions by 40%. Digital Firing System: Hydrogen-Fired Shuttle Kiln (1600°C ±5°C) with Intelligent Temperature-Control Modules (30 independent zones). III. Application Scenarios Typical Case Studies and Performance Data Electronic Glass High-Borosilicate Melting Furnace: Service Life of the Vault Extended to 7 Years. New Energy Photovoltaic Glass Tin Bath: Energy Consumption Reduced by 22%. Aerospace Rocket Nozzle Heat Shield: Temperature Resistance Up to 2000°C. Environmental Hazardous Waste Incinerator Lining: Corrosion Resistance Improved by 50%. IV. Performance Advantages Compared with Traditional Materials Resistance to Glass Erosion: 0.5 mm/year (AZS brick: 1.2 mm); Thermal Shock Stability: 20 cycles (silica brick: only 5 cycles). Economic Analysis: Cost 35–40% lower than AZS brick; Maintenance Interval: 5 years without major overhauls. V. Latest Physicochemical Indices 1. Basic Properties (ZS-65): – Bulk Density: 3.65±0.15 g/cm³ (GB/T 2997-2025); – Compressive Strength: ≥80 MPa (ISO 10059-2:2026). 2. High-Temperature Characteristics: – Load Softening Point: ≥1680°C (0.2 MPa); – Coefficient of Thermal Expansion: 0.45% at 1000°C. 3. Special Indicators: – Resistance to Soda-Lime Glass Erosion: ≤0.8 mm/24 h at 1500°C; – Radioactivity: Internal Radiation Index ≤0.3.

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Description:

Zirconia refractory bricks

I. Main Product Types

Standard zirconia brick ( ZS-65)

Ingredients: ZrO₂ 65±2%, SiO₂ 32±2%
Characteristic: Bulk Density 3.5–3.8 g/cm³, apparent porosity ≤ 18%
Application: Upper Structure of Glass Furnace

Zirconia-reinforced ( ZSM-75)

Add 8–12% monoclinic ZrO₂
Thermal shock resistance improved to 25 times (water-cooled at 1100℃)
Applicable to: Tundish breathable bricks

Composite

Zircon - Mullite gradient structure (ZrO₂ gradient from 40% to 15%)
Reduced thermal conductivity 30%

2. Intelligent Production Processes

Raw Material Processing

Microwave calcination of zircon sand ( 1500℃/2h )

Particle size control:

# 3–1 mm: 1–0.1 mm: <0.1 mm ```

Low-temperature bonding technology

Aluminum phosphate binder (sintering temperature reduced to 1450℃)
40% reduction in CO₂ emissions

Digital Firing System

Hydrogen-fired shuttle kiln ( 1600℃±5℃)
Intelligent temperature control module ( Independent regulation in Zone 30)

III. Applications

Application Scenarios	Typical Cases	Performance Data
Electronic glass	High-borosilicate melting furnace arch	Life expectancy extended to 7 years
New energy	Photovoltaic Glass Tin Bath	Energy consumption reduced by 22%
Aerospace	Rocket nozzle insulation	Temperature resistance of 2000℃
Environmental protection	Lining of Hazardous Waste Incinerator	50% improvement in erosion resistance

IV. Performance Advantage Comparison

Comparison with Traditional Materials

Resistance to glass erosion: 0.5 mm/year (AZS brick: 1.2 mm)
Thermal shock stability: 20 times (only 5 times for silica bricks)

Economic Analysis

Cost: Compared to AZS bricks are 35–40% lower
Maintenance cycle: 5-year major overhaul exemption

V. Latest Physicochemical Indices

1. Basic Performance ( ZS-65 ): - Bulk density: 3.65±0.15 g/cm³ （ GB/T 2997-2025 ) - Withstand Voltage Strength: ≥80MPa （ ISO 10059-2:2026 )

2. High-temperature characteristics: - Load-softening point: ≥1680℃ （ 0.2MPa ) - Coefficient of thermal expansion: 0.45% （ 1000℃ )

3. Special indicators: - Resistance to sodium–calcium glass corrosion: ≤0.8 mm/24 h （ 1500°C ) - Radioactivity: Internal Exposure Index ≤0.3

Keywords:

Zircon Brick

Zirconia Special-Shaped Brick

Zirconia-chrome corundum brick

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WhatsApp：8615936268068

Mobile phone：+86-15936268068

Email：zzjsrefractory@gmail.com

Zircon Brick

Zirconia refractory bricks

I. Main Product Types

2. Intelligent Production Processes

III. Applications

IV. Performance Advantage Comparison

V. Latest Physicochemical Indices

COOKIES

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