Refractory Material

Overview of Refractory Material

Refractory materials are high-performance, non-metallic ceramics engineered to withstand extreme environments where ordinary materials would fail. Their defining characteristic is an exceptional ability to maintain structural and chemical integrity at temperatures exceeding 1,000°C (1,832°F). Serving as the essential thermal barrier and containment system in high-temperature industrial processes, refractories are the unsung heroes of modern industry, enabling the efficient production of everything from metals and glass to cement and chemicals. They are a critical component in furnaces, kilns, incinerators, and reactors.

Features of Refractory Material

Our advanced refractory materials are designed with a suite of critical features to meet the most demanding applications:

• Exceptional Thermal Resistance: Withstand sustained temperatures from 1,000°C to over 1,800°C without melting or degrading.
• High Mechanical Strength: Retain structural strength and resist deformation under heavy loads at operating temperatures.
• Superior Thermal Shock Resistance: Withstand rapid heating and cooling cycles without cracking or spalling, ensuring long service life.
• Excellent Chemical Inertness: Resist corrosive attacks from slags, molten metals, acids, and alkalis, preserving furnace linings and product purity.
• Low Thermal Conductivity: Provide superior insulation to improve energy efficiency and protect equipment structures.
• Abrasion & Erosion Resistance: Withstand the physical wear from solid materials, gases, and molten flows.

Applications of Refractory Material

Refractories are the backbone of high-temperature processing across a wide range of sectors:

• Iron & Steel Industry: Lining of blast furnaces, ladles, tundishes, and reheating furnaces.
• Non-Ferrous Metals: Found in aluminum melting furnaces, copper converters, and zinc processing reactors.
• Cement & Lime Production: Kiln linings and preheater cyclones in rotary kilns.
• Glass Manufacturing: Critical for glass melting furnaces (regenerators, checkers, and forehearths).
• Ceramics & Petrochemicals: Lining kilns for firing ceramics and crackers in oil refineries.
• Power Generation: Used in boilers and incinerators for waste-to-energy plants.

Specification Table of Refractory Material

Property	Alumina Refractories	Silica Refractories	Fireclay Refractories	Magnesia Refractories
Max Service Temp.	Up to 1800°C	Up to 1750°C	Up to 1500°C	Up to 2400°C
Chemical Composition	High Al₂O₃ (60-99%)	High SiO₂ (>93%)	Al₂O₃ + SiO₂	High MgO (>90%)
Porosity	Low to Very Low	Low	Moderate	Low
Thermal Shock Resistance	Good	Poor	Very Good	Fair to Poor
Key Strength	Abrasion Resistance, Strength	Acid Slag Resistance	Cost-Effectiveness, Stability	Basic Slag Resistance
Typical Form	Bricks, Castables, Shapes	Bricks	Bricks, Castables	Bricks, Gunning Mixes

Company Profile

Tanki New Materials Co.Ltd. focus on the research and development, production and sales of ceramic products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2015, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Aerogel, Aluminum Nitride, Aluminum Oxide, Boron Carbide, Boron Nitride, Ceramic Crucible, Ceramic Fiber, Quartz Product, Refractory Material, Silicon Carbide, Silicon Nitride, ect. please feel free to contact us.

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Refractory Material

1. What is the main difference between a refractory ceramic and a regular ceramic?
While both are non-metallic and inorganic, refractory ceramics are specifically formulated for ultra-high temperature stability (typically >1,000°C), whereas regular ceramics (like pottery or tiles) are designed for much lower firing and use temperatures.

2. How do I choose between a brick and a monolithic refractory?
Refractory bricks offer precision and consistency for specific shapes. Monolithic refractories (castables, plastics, gunning mixes) are ideal for complex geometries, faster installation, and seamless linings without joints, which can be points of failure.

3. What causes refractory failure?
Common causes include chemical corrosion from process slags, thermal spalling from rapid temperature cycles, mechanical abrasion, and structural overloading at high temperatures.

4. Why is pre-heating (drying/curing) of refractories so important?
Monolithic refractories contain water that must be slowly and controllably removed. Improper heating can cause steam pressure to build up, leading to explosive spalling and catastrophic lining failure.

5. Can damaged refractory linings be repaired?
Yes, many linings can be repaired in-situ using specialized gunning mixes or patching compounds, extending the service life of the furnace and reducing downtime and cost.