Name: Rongsheng produces uniformly thermally expanding, high-strength mullite refractory materials suitable for hot blast stoves and glass melting furnaces.
Rating: 5.0 (50 reviews)

Product Introduction

Zhengzhou Rongsheng Kiln Refractory Materials Co., Ltd. meticulously crafts high-strength mullite refractory materials with uniform thermal expansion. These materials are made from high-quality quartz sand and industrial alumina, melted in an electric arc furnace. The products possess a highly developed needle-like crystal structure, uniform thermal expansion, high strength, excellent thermal shock resistance, high softening point under load, low creep at high temperatures, high hardness, and excellent chemical corrosion resistance. Certified by international standards such as ISO9001 and ISO14001, quality is guaranteed. As a high-tech enterprise, Rongsheng strictly controls quality, possesses professional technical support and a global sales network, and provides comprehensive after-sales service and customized solutions to meet your diverse needs.

Advantages and features

1. Made from high-quality quartz sand and industrial alumina, with high-quality raw materials.
2. Highly developed needle-like crystal structure with uniform thermal expansion.
3. High strength and excellent thermal shock resistance.
4. High softening point under load and low creep at high temperatures.
5. High hardness and excellent chemical corrosion resistance.
6. It has passed international certification, and its quality is guaranteed.
7. Produced by a high-tech enterprise, with comprehensive after-sales service and customized solutions.

Application Scenario

Suitable for high-temperature industrial applications such as hot blast stoves and glass melting furnaces, it can meet the needs of various markets and customers with high requirements for refractory materials.

Product Parameters

Physical performance parameters

Main Ingredients:	High-purity fused silica sand and industrial alumina
Microstructure:	Needle-like crystal structure
Flexural strength:	≥50 MPa
Coefficient of thermal expansion (20-1000°C):	≤4.5×10⁻⁶ /K
softening temperature:	≥1750 °C
High temperature creep rate:	Low
hardness:	Vickers hardness HV≥1200

Chemical performance parameters

Alumina content (Al₂O₃):	70% - 80%
Silica content (SiO₂):	Approximately 20% - 30%
Chemical resistance:	Excellent resistance to acid, alkali and molten salt corrosion
Thermal shock resistance:	Excellent, suitable for high-temperature rapid cooling environments.

Thermal performance parameters

Maximum operating temperature:	≥1780 °C
Thermal conductivity (1000°C):	Approximately 3.5 W/m·K
Linear thermal expansion:	Uniform and stable
Thermal shock stability:	Excellent, suitable for environments with rapid temperature changes.

Mechanical performance parameters

Bulk density:	3.18 - 3.28 g/cm³
room temperature compressive strength:	≥150 MPa
High-temperature compressive strength (1600°C):	≥10 MPa
Wear resistance:	excellent

Standards Certification and Quality Control

Quality system certification:	ISO9001
Environmental Management System Certification:	ISO14001
Standards compliant:	Multiple international certifications for ceramics and refractory materials
Production Process:	Electric arc furnace melting method, strict quality control