High-quality Alumina ceramic-lined pipe is a composite pipe with a high-purity Alumina ceramic lining, bonded to a metal pipe base through a specific process. Its structure generally consists of an outer layer of a metal pipe with a certain strength and toughness, such as Q235B, Q355B carbon steel, or stainless steel, and an inner layer of a wear-resistant and corrosion-resistant alumina ceramic. The thickness of the ceramic layer is determined by specific application requirements.

Performance

High wear resistance: The alumina ceramic content is typically ≥95%, with a Rockwell hardness of HRA85-90. Its wear resistance is 20 times that of manganese steel and 50 times that of rubber, effectively resisting erosion and wear from materials such as ore, coal dust, and slag.

Excellent corrosion resistance: It is resistant to acids and alkalis (pH 3-11), suitable for corrosive environments such as desulfurization and chemical processing, and is highly resistant to acids, alkalis, salts, and organic solvents. Excellent high-temperature resistance: It can operate long-term within a temperature range of -50°C to 900°C. Alumina ceramics of varying purity have slightly different temperature resistances; for example, 99% alumina ceramics can withstand temperatures up to 1600°C.

Excellent thermal shock resistance: Due to the unique structure and stress field created by the process, the ceramic and steel layers are subjected to compressive stress at room temperature, while the steel layer is subjected to tensile stress. The two interact to form a balanced whole, resulting in excellent thermal shock resistance.

Smooth inner wall: The smooth inner Ceramic Lining offers low fluid resistance and resists scaling, improving conveying efficiency and reducing energy consumption.

Combined process: High-temperature bonding: Using a high-strength adhesive such as modified epoxy resin glue and specialized fixtures, the ceramic sheet is bonded to the inner wall of the steel pipe, ensuring a strong bond between the ceramic and the substrate, with a misalignment error of less than 0.5mm. Self-Propagating High-Temperature Synthesis (SHS) - Centrifugal Method: Utilizing SHS techniques such as thermite reaction, an alumina ceramic layer is formed on the inner wall of a steel pipe. This method produces ceramic-steel pipes with a tight, uniform ceramic layer.

Shrink-fitting: The Ceramic Pipe is heated and then inserted into a metal pipe, leveraging the difference in thermal expansion coefficients to achieve a tight fit between the ceramic and metal. This method is suitable for applications requiring high bond strength.

Applications

Power Industry: Used in power plant pipelines for pulverized coal transportation, ash discharge, and desulfurization slurry transportation, effectively extending pipeline service life and reducing maintenance costs.

Mining Industry: Suitable for applications such as ore and tailings transportation, resisting abrasion from high-hardness ore particles and reducing pipe replacement frequency.

Metallurgical Industry: Suitable for blast furnace coal injection and slag conveying in ironmaking, as well as for ferroalloy transportation and refining in steelmaking, meeting high-temperature, wear-resistant, and corrosion-resistant requirements.

Chemical Industry: Used for conveying media such as acidic and alkaline solutions, corrosive gases, and slurries, such as in chemical plants, to improve pipeline reliability and stability. Cement industry: It plays an important role in the transportation of raw slurry, coal powder, concrete and other links in the cement production process, reducing pipeline wear and blockage.