Table of Contents

1. Functional Positioning of Glass Furnace Bottom Bricks
2. XZK Group's Product Adaptation & Core Advantages
3. Buying Guide for XZK Glass Furnace Bottom Bricks
4. Case Studies: XZK's Successful Applications
5. Frequently Asked Questions (FAQ)

1. Functional Positioning of Glass Furnace Bottom Bricks

Glass furnace bottom bricks are critical components that bear the weight of molten glass and resist extreme operating conditions. Their core functions directly determine the furnace's service life, operational stability, and glass product quality.

Key Functional Requirements

• High Temperature Resistance: Withstand continuous operating temperatures above 1500℃, even up to 1700℃ for special glass production.
• Corrosion Resistance: Resist chemical erosion from molten glass, fluxes, and volatile substances to avoid contamination.
• Wear & Abrasion Resistance: Endure mechanical wear from molten glass flow and raw material movement.
• Structural Stability: Maintain dimensional integrity under high temperature and pressure without deformation or cracking.
• Low Thermal Conductivity: Reduce heat loss to improve energy efficiency and lower operational costs.

These functions rely on strict material composition and performance indicators. For example, high ZrO₂ and Al₂O₃ content enhances high-temperature stability, while low Fe₂O₃ content minimizes glass contamination risks.

2. XZK Group's Product Adaptation & Core Advantages

With over two decades of experience in the refractory materials industry, XZK Group holds advanced production certifications and technical patents. Our glass furnace bottom bricks are engineered to address industry pain points, with products precisely matched to diverse operating conditions.

Featured Product Lineup

• Superior Material Quality: Raw materials undergo strict purity testing, with controlled impurity content (Fe₂O₃ ≤0.5% for most products) to ensure glass quality.
• Advanced Manufacturing Technology: Adopt electric melting and precision sintering processes to enhance density and structural uniformity, with bulk density reaching 3.2-3.55g/cm³ for key products.
• Customization Capabilities: Tailor dimensions, composition, and performance to meet specific furnace designs and production requirements.
• Proven Durability: Products feature permanent linear change ≤±1.0% after high-temperature firing, extending furnace service life by 20-30% compared to industry averages.
• Comprehensive Technical Support: Provide pre-sales consultation, on-site installation guidance, and post-sales maintenance services.

3. Buying Guide for XZK Glass Furnace Bottom Bricks

Selecting the right glass furnace bottom bricks requires matching product performance to your specific operational conditions. Follow this guide to make an informed decision:

Step 1: Determine Operating Temperature

• For furnaces with continuous temperatures ≥1600℃: Choose Fused AZS Bricks (AZS-36/AZS-41) with ZrO₂ ≥35-40%.
• For temperatures between 1500-1600℃: Opt for Zircon Mullite Bricks (ZM-20/ZM-30) or Corundum Mullite Bricks.
• For medium-temperature furnaces (1400-1500℃): Sintered Mullite Bricks or High-Alumina Bricks (LZ-75) are cost-effective choices.

Step 2: Evaluate Corrosion Environment

• Heavy corrosion (e.g., molten glass with high alkali content): Select AZS Bricks or Zircon Mullite Bricks with high ZrO₂ content.
• Moderate corrosion: Corundum Mullite Bricks with Al₂O₃ ≥85% offer balanced performance.
• Acidic volatile environments: Silica Mullite Red Bricks with SiC + SiO₂ ≥30% provide excellent resistance.

Step 3: Consider Mechanical Requirements

• High-load furnaces (large glass capacity): Prioritize compressive strength ≥90MPa (e.g., Chrome Corundum Bricks or Fused AZS Bricks).
• Frequent temperature fluctuations: Choose products with thermal shock stability ≥15 times (e.g., Corundum Mullite Bricks).

Step 4: Verify Dimensional Precision

• Ensure bricks meet furnace design tolerances. XZK Group offers precision machining with dimensional error ≤±0.5mm to ensure tight joints and minimize heat loss.

4. Case Studies: XZK's Successful Applications

Case 1: High-Temperature Borosilicate Glass Furnace

A European glass manufacturer producing pharmaceutical glassware faced frequent bottom brick damage due to 1650℃ continuous operation and alkali corrosion. XZK recommended Fused AZS-41 Bricks (ZrO₂ ≥40%, Al₂O₃ ≥45.5%). After installation, the furnace's service life extended from 18 months to 24 months, reducing maintenance costs by 25% and improving product qualification rate by 8%.

Case 2: Special Glass Production Line

A Southeast Asian manufacturer producing optical glass required ultra-low impurity content and high structural stability. XZK provided customized Zircon Mullite Bricks (ZM-30) with Fe₂O₃ ≤0.2% and bulk density ≥3.3g/cm³. The bricks effectively resisted corrosion from rare earth additives, ensuring consistent glass transparency and reducing production downtime by 30%.

Case 3: Large-Scale Float Glass Furnace Renovation

A Chinese float glass factory needed to upgrade its 500-ton furnace for energy efficiency and longer service life. XZK supplied Corundum Mullite Bricks and High-Alumina Silicon Carbide Bricks, optimizing thermal conductivity to 0.45-0.55 W/(m·K). The renovation reduced energy consumption by 15% and extended the furnace's service life to 8 years, exceeding the industry average of 6 years.

5. Frequently Asked Questions (FAQ)

Q: What factors are most critical for extending the service life of glass furnace bottom bricks?

A: The key factors include material composition (high ZrO₂/Al₂O₃ content), structural density (bulk density ≥2.8g/cm³), corrosion resistance (Fe₂O₃ ≤0.5%), and proper installation. XZK's products are engineered to excel in all these aspects, with strict quality control from raw materials to finished products.

Q: Can XZK Group provide customized glass furnace bottom bricks for non-standard furnace designs?

A: Yes. XZK has a professional R&D team and flexible production lines to customize brick dimensions, material composition, and performance parameters according to your furnace drawings and operational requirements. We also provide technical simulations to ensure optimal product adaptation.

Q: How does XZK ensure the consistency of product quality for large-scale orders?

A: XZK implements a comprehensive quality management system. Raw materials are inspected for purity and composition; production processes are monitored in real-time using advanced sensors; and each batch of products undergoes high-temperature firing tests, compressive strength tests, and dimensional inspections. All products meet ISO and refractory material industry standards.