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A power plant's fly ash conveying pipeline faced frequent elbow wear and leakage. Elacera ceramic-lined pipes helped improve wear resistance and reduce maintenance frequency. Project Background In a fly ash pneumatic conveying system, pipeline wear usually appears faster than expected. The problem is often most serious at elbows, reducers, and pipe sections where the conveying direction changes. For one power plant application, the maintenance team found that several pipe elbows in the ash conveying line required frequent inspection and replacement. The original pipe sections were exposed to continuous fly ash abrasion during operation. Once the inner wall became thinner, leakage and dust pollution could occur around the pipeline. The customer needed a more wear-resistant solution for the high-wear pipe sections, especially elbows and connection areas. Main Problems The main problems were not limited to pipe replacement cost. The customer was more concerned about the impact on daily operations. The common issues included: Fast wear at ash conveying elbows Local thinning of the pipe wall Risk of ash leakage and dust pollution Unplanned maintenance work Short service life of ordinary steel pipe sections Higher maintenance pressure during continuous operation For power plant maintenance teams, every unexpected shutdown can affect production scheduling. Therefore, improving the wear resistance of key pipeline sections became the priority. Wear Cause Analysis Fly ash particles are small but abrasive. During pneumatic conveying, the particles move at high speed with airflow. In straight pipes, the wear may be relatively even. But when the material reaches an elbow or reducer, the particles impact the pipe wall more strongly. This is why elbows, reducers, and tees usually fail earlier than straight pipes. If these positions are still protected only by ordinary steel, the wear problem can repeat again and again. Elacera Solution Based on the working condition, Elacera recommended alumina ceramic-lined pipes for the high-wear sections of the fly ash conveying line. The solution included: Ceramic-lined elbows for direction-changing sections Ceramic-lined straight pipes for high-abrasion pipe sections Ceramic-lined reducers for areas with flow speed change Customized ceramic lining structure according to drawings Steel outer pipe for mechanical strength and installation support The alumina ceramic lining was applied to the inner wear surface of the pipeline. This allowed the ceramic layer to directly resist fly ash abrasion while the steel shell maintained the required structural strength. Why Alumina Ceramic Was Selected Alumina ceramic was selected because it provides high hardness and strong resistance to abrasive particle wear. In fly ash conveying systems, the main wear mechanism is continuous sliding abrasion and particle impact. Ceramic lining is suitable for this type of working condition because it protects the pipe wall from direct contact with the abrasive material. For elbows and reducers, customized ceramic segments can also reduce weak points in the lining structure and improve protection in high-wear areas. Practical Value for the Customer After replacing the high-wear pipe sections with ceramic-lined pipes, the customer could improve the protection of key wear positions and reduce the frequency of emergency replacement. The practical value included: Longer service life of elbows and pipe fittings Lower risk of fly ash leakage Reduced maintenance frequency Less unplanned shutdown risk Better working environment around the conveying line More stable operation of the ash conveying system For this type of application, the biggest value is not simply replacing one pipe with another. The real value is helping the plant reduce repeated maintenance problems in the most vulnerable sections of the conveying system. Recommended Products For similar fly ash conveying applications, Elacera can provide: Alumina ceramic-lined pipe Ceramic-lined elbow Ceramic-lined reducer Ceramic-lined tee Ceramic-lined ash transport pipe Customized ceramic-lined pipe fittings Customers can provide drawings, pipe dimensions, working conditions, and site photos for solution evaluation. Conclusion Fly ash conveying pipeline wear is a common problem in power plants, but it should not be treated as an unavoidable maintenance cost. By applying ceramic lining to the most severely worn pipe sections, maintenance teams can improve wear resistance, reduce leakage risk, and extend the service life of the conveying pipeline. Elacera ceramic-lined pipes provide a practical wear protection solution for power plant ash conveying systems and other abrasive pneumatic conveying applications.

Background A sand washing plant was experiencing frequent wear inside its hydrocyclone system. The hydrocyclone was used for fine particle separation, mud removal, and sand classification. Because the slurry contained abrasive sand particles and operated at high velocity, the internal wall of the cyclone was exposed to continuous impact and erosion. At the beginning of the operation, the system could maintain normal classification performance. However, after several months of use, the plant began to notice changes in the hydrocyclone’s performance. The inner wall became rough, the liner showed local wear, and the classification result became less stable. Maintenance teams had to inspect and repair the cyclone more frequently, which increased downtime and labor costs. The customer’s main concern was not simply replacing a worn liner. Their real concern was production stability. Every shutdown affected the sand washing line, reduced output, and increased the pressure on maintenance planning. The Problem The original liner material could not provide enough resistance against long-term slurry abrasion. In this type of working condition, sand particles continuously hit the cyclone wall under high-speed rotational flow. The most serious wear usually appears near the feed inlet, cone section, and underflow area. Once these areas are worn, the internal geometry of the cyclone changes, which affects the slurry flow pattern. The plant faced several practical problems: Frequent liner inspection and replacement Localized wear near high-impact areas Unstable classification performance after internal surface wear Higher spare parts and maintenance labor costs Production interruptions caused by unplanned maintenance For the plant manager, the biggest issue was that the hydrocyclone had become a maintenance-sensitive component. Even if the replacement cost of each liner was acceptable, the hidden cost of shutdown was much higher. Root Cause Analysis After reviewing the operating conditions, the main cause was identified as high-abrasion slurry impact. The hydrocyclone was handling sand and slurry with continuous particle movement. Under centrifugal force, abrasive particles repeatedly contacted the internal wall. Traditional metal or rubber surfaces could not maintain their shape and smoothness for long periods under these working conditions. The problem was not only material wear. Once wear developed on the inner wall, the cyclone’s separation environment also changed. The flow became less stable, and this affected classification consistency. In other words, the liner was not just a protective layer. It directly influenced the equipment’s operating performance. Engineering Solution To improve wear resistance and stabilize long-term operation, a hydrocyclone with 95% alumina ceramic lining was recommended. The solution used a metal shell as the structural body and high-density alumina ceramic tiles as the internal wear protection layer. The ceramic lining was designed according to different areas of the hydrocyclone, including the cylinder section, cone section, feed inlet, overflow area, and underflow nozzle. Small ceramic tiles were used to match the curved internal surface. This allowed the ceramic lining to fit the cyclone geometry more closely and reduce gaps between tiles. A staggered ceramic layout was selected for better bonding stability. During installation, the internal surface was cleaned and prepared before ceramic bonding. The ceramic tiles were installed tightly, and the gaps were controlled to help prevent slurry penetration behind the liner. After curing, the inner surface formed a smooth and wear-resistant protection layer. Why 95% Alumina Ceramic Was Selected 95% alumina ceramic was selected because it provides high hardness, strong abrasion resistance, and good stability under slurry erosion. Compared with rubber liners, ceramic lining has much higher resistance to hard particle impact. Compared with metal liners, ceramic does not suffer the same level of erosion and corrosion under abrasive slurry flow. For this application, the plant needed a lining material that could do more than survive wear. It had to maintain a smooth flow surface and support stable classification performance over time. This is why alumina ceramic was a better choice than simply increasing metal thickness. Result and Value After upgrading to the ceramic-lined hydrocyclone, the plant expected a significant improvement in service life and maintenance stability. The ceramic lining provided a more durable internal wear surface, reducing the need for frequent liner replacement. The smoother inner wall also helped maintain a more stable slurry flow path, supporting consistent particle classification. The key value for the customer included: Longer hydrocyclone liner service life Reduced maintenance frequency Lower spare parts consumption Less unplanned downtime More stable classification performance Lower total maintenance cost over time For the plant, the most important benefit was not only the ceramic material itself, but the improvement of production continuity. When the hydrocyclone runs longer without frequent maintenance interruption, the entire sand washing system becomes easier to manage. Engineering Conclusion In abrasive slurry systems, hydrocyclone wear is not just a spare parts problem. It is a production stability problem. If the internal surface wears too quickly, the classification system becomes unstable, maintenance costs increase, and plant operation becomes harder to control. The 95% alumina ceramic-lined hydrocyclone provides a practical solution by protecting the internal wear surface directly. For sand washing plants, mining beneficiation systems, coal preparation plants, and other slurry classification operations, ceramic lining can help extend service life, reduce downtime, and improve long-term operating reliability.