Zirconia Ceramic Fiber Module Lining for Steel Ladle Preheating System

Project Overview

‌HENGRUI High-Temperature successfully implemented a zirconia ceramic fiber module lining system for a steel ladle preheating project. The solution provided exceptional thermal insulation, high installation efficiency, and significant energy savings, ensuring long-term operational reliability and reduced maintenance downtime.

Lining Design Scheme‌

• Design Structure:
   25 mm zirconia fiber backing blanket + 200 mm zirconia ceramic fiber module
• Fixing Method:
   Type 314 stainless steel anchoring system with matching bolts and nuts
• Density:
   Approximately 220 kg/m³ — only one-fourth the density of conventional refractory bricks
• Installation:
   Modules are pre-compressed and pre-designed with welding points. Once the packing belt is removed, the modules expand naturally to form a tight, seamless lining.

Advantages of HENGRUI Ceramic Fiber Modules

1. Lightweight & Low Thermal Conductivity

The zirconia ceramic fiber module provides excellent insulation performance, with extremely low heat conductivity and absorption. This results in reduced energy loss and improved furnace efficiency.

2. Elastic Recovery & Shrinkage Compensation

Pre-compressed modules automatically expand after installation, filling all joints and eliminating gaps, which enhances the overall sealing and integrity of the furnace lining.

3. Fast Installation Efficiency

Modular design and pre-set welding points allow rapid assembly—up to 1,000 standard modules can be installed within 7–10 days, greatly reducing construction time.

4. Outstanding Thermal Shock Resistance

Zirconia fiber demonstrates exceptional structural stability under rapid temperature fluctuations, extending the service life of the furnace lining.

Ceramic Fiber Module Anchoring System

HENGRUI offers various anchor solutions tailored to different furnace types, temperature ranges, and operating conditions:

• Anchor Types:
   Angle type, butterfly type, diamond type, corner type, U-pin, and V-pin anchors
• Material Options:
   Stainless steel grades 201, 304, 310S, 316 — suitable for 700–1400°C applications
• Design Feature:
   Anchors are positioned on the cold surface to prevent heat exposure and ensure long-term structural stability.

This anchoring system ensures secure fixing of ceramic fiber modules and consistent thermal insulation performance throughout the furnace lining.

Application & Performance Results

After commissioning, the system achieved the following results:

✅ Significant reduction in heat loss
✅ Energy efficiency improvement by 15–30%
✅ Enhanced lining integrity and extended maintenance cycle
✅ Outer shell temperature below ambient +45°C

HENGRUI’s zirconia ceramic fiber module lining solution reflects the company’s commitment to energy-saving technology, advanced refractory design, and sustainable industrial innovation.