Project Timeline: Retrofit implemented in 2022, full-line overhaul inspection and acceptance completed at the end of 2024
Equipment Applied: Circulating fan impeller for cement production line
Retrofit Process: Metal wear-resistant ceramic composite manufacturing technology
Case Tags: Cement plant circulating fan wear-resistant retrofit, metal-ceramic composite anti-wear, equipment cost reduction and efficiency improvement, long-term wear-resistant protection
I. Project Background: Circulating Fan Wear Problems Have Long Plagued Production
As core critical equipment in cement production lines, circulating fans are mainly responsible for conveying mixed airflow with high temperature, high dust concentration, and high-hardness particles. The impellers are chronically subjected to the combined effects of high-speed scouring, high-temperature thermal cycling, and equipment vibration. Wear, thinning, and fracture are common equipment pain points in the cement industry.
The original circulating fan at this large cement plant used traditional hardfacing and spray coating wear-resistant processes, resulting in short wear-resistant service life. The equipment required shutdown overhaul 1-2 times per year, consuming substantial labor and spare parts costs. Frequent shutdowns for maintenance also interrupted continuous production line operations, severely affecting production efficiency, with overall operation and maintenance costs remaining persistently high. To fundamentally solve the frequent equipment wear problem, the enterprise decided to adopt new wear-resistant technology to upgrade the fan impeller.
II. Customized Wear-Resistant Retrofit Solution Implemented
Targeting the harsh operating conditions of high temperature, high scouring, and continuous operation at this plant, Titan-Shield Technology, drawing on years of experience in cement industry wear-resistant retrofits, customized a metal wear-resistant ceramic composite technology solution, with the Beijing Titan-Shield Technology team providing full-process implementation services.
This retrofit abandoned traditional single protection processes and adopted a dual fixation process of [high-strength temperature-resistant adhesive bonding + bolt mechanical reinforcement] to firmly composite wear-resistant ceramic tiles onto the metal substrate surface of the fan impeller. The exclusive temperature-resistant adhesive adapts to the fan's long-term high-temperature operating environment, offering thermal shock resistance and anti-debonding properties. Combined with the bolt locking structure, it effectively resists vibration generated by high-speed equipment rotation, fundamentally eliminating ceramic tile detachment and cracking issues.
This process differs from traditional wear-resistant solutions in that it does not damage the equipment substrate, offers strong protective layer stability, and perfectly adapts to the 24-hour uninterrupted operation mode of cement production lines.
III. Three-Year Field Verification: Metal Impeller Worn Through, Ceramic Protective Layer Remains Intact
At the end of 2024, the cement plant carried out its annual full-line equipment overhaul, disassembling and inspecting the circulating fan that had undergone wear-resistant retrofit in 2022. The equipment condition after three years of extreme operating conditions earned high recognition from the on-site equipment team.
After a full three years of uninterrupted operation, the fan impeller's metal substrate had developed large-area thinning and localized fracture failure under continuous scouring by high-speed dust particles, with the metal main body having reached scrapping standards. In stark contrast, however, the wear-resistant ceramic protective tiles composited on the impeller surface showed no detachment, no cracking, and no peeling, with the overall tile surface remaining flat and smooth, exhibiting only extremely slight natural wear marks. The protective performance far exceeded expectations.
On-site measurement feedback from Mr. Zhang, the plant's equipment supervisor: "In the past, retrofitted fans required overhaul after about one year. This time, after three years of Titan-Shield ceramic wear-resistant retrofit, the metal impeller has been worn through, yet the ceramic layer remains solid. Its wear resistance is far superior to traditional steel and hardfacing processes."
IV. Retrofit Results: Significant Cost Reduction and Efficiency Improvement, Fundamentally Solving Equipment Persistent Problems
This circulating fan ceramic wear-resistant retrofit, verified through three years of field application, has brought significant equipment optimization and economic benefits to the enterprise:
Ultra-Long Wear-Resistant Life: Compared with the 6-12 month service life of traditional processes such as hardfacing and spray coating, the metal-ceramic composite protection extends service life by 3-5 times, achieving three-year long-term protection.
Reduced Shutdown Maintenance: Before the retrofit, the equipment required 1-2 shutdown overhauls annually. After the retrofit, only routine inspections were needed over three years, with no specialized wear-resistant maintenance, greatly reducing downtime and work delay losses.
Lower Operation and Maintenance Costs: No need for frequent spare parts replacement or labor-intensive repairs, with comprehensive equipment operation and maintenance costs reduced by over 70%.
Stable Production Operation: Eliminates fan dynamic balance imbalance caused by protective layer detachment, ensuring safe, continuous, and efficient production line operation.
V. Case Summary
This cement plant circulating fan retrofit case visually confirms that metal wear-resistant ceramic composite technology is a high-quality solution for solving wear problems in high-temperature, high-scouring equipment in the cement industry. Under the development trend of quality improvement, efficiency enhancement, cost reduction, and emission reduction in the cement industry, traditional wear-resistant processes can no longer adapt to high-intensity production conditions. The new ceramic composite wear-resistant technology, with its core advantages of long-term durability, stability, and maintenance-free operation, can perfectly solve the pain points of various high-wear equipment such as circulating fans, classifiers, cyclones, and discharge pipelines.
Titan-Shield Technology has been deeply engaged in the wear-resistant and anti-corrosion field for over twenty years, focusing on providing customized wear-resistant protection solutions for enterprises in cement, power, chemical, and other industries. Relying on mature technology and standardized construction processes, it helps enterprises achieve long-term equipment operation, cost reduction, and efficiency improvement.