In the energy supply system of steel mills, coal conveying chutes and hoppers are key channels connecting coal storage to boiler coal supply, undertaking the critical task of continuous conveying of high-hardness coal. However, during the conveying process, coal causes continuous scouring and impact on the inner walls of chutes and the bottoms of hoppers, with wear problems being particularly severe at locations such as material drop corners and conveying interfaces. Frequent equipment wear-through not only leads to coal leakage and pollution of the production environment, but also requires frequent shutdowns to replace components, with each shutdown lasting at least 1-2 days, and in worse cases affecting the boiler coal supply rhythm. This has become a core pain point constraining stable energy supply and driving up operation and maintenance costs in steel mills.
Among traditional protection solutions, steel mills mostly use high-manganese steel or ordinary wear-resistant steel plates to line the inner walls of chutes and hoppers, but these materials have obvious limitations: high-manganese steel requires strong impact to harden, and under medium-to-low impact conditions such as coal conveying, its wear resistance is greatly reduced, requiring replacement on average every 3-4 months; ordinary wear-resistant steel plates have insufficient hardness and wear even faster, and replacement requires cutting and welding, which not only consumes labor but also damages the equipment substrate, forming a vicious cycle of "replacement - damage - more frequent replacement." Statistics from a medium-sized steel mill show that its coal conveying system chutes and hoppers generate over 300,000 yuan in annual maintenance costs due to wear, with shutdown losses even more difficult to estimate.
Now, Titan-Shield wear-resistant ceramic liners provide a targeted solution to the wear problems of coal conveying chutes and hoppers in steel mills. As a protective product designed for medium-to-high wear conditions, Titan-Shield wear-resistant ceramic liners have been verified through practical applications by multiple steel mills, capable of extending the service life of chutes and hoppers from 3-4 months to over 5 years, with operation and maintenance costs directly reduced by 70%, becoming the preferred choice for upgrading coal conveying systems in steel mills.
The outstanding performance of Titan-Shield wear-resistant ceramic liners originates from their rigorous material and process design. The core ceramic layer uses 92% high-purity Al₂O₃ powder, sintered at 1600°C, with hardness reaching HRC 70-72, wear resistance 20 times that of high-manganese steel and 60 times that of ordinary carbon steel, easily withstanding continuous scouring by coal particles. The back of the ceramic liner is composited with high-strength steel plate, which not only retains the high wear resistance of ceramics but also compensates for the brittleness defects of ceramics, improving impact resistance by 50% and preventing liner fracturing caused by material impact. The matching titanium-gold special adhesive maintains a shear strength of 15MPa even under 180°C high-temperature environments, far exceeding the operating requirements of coal conveying systems, ensuring tight bonding between the liner and equipment substrate, without detachment even at locations with strong vibration such as chute corners.
For steel mills, choosing Titan-Shield wear-resistant ceramic liners not only fundamentally solves the wear problems of coal conveying chutes and hoppers, but also provides tangible support for enterprises to reduce costs and improve efficiency by extending equipment life, reducing shutdown losses, and improving conveying efficiency. As an innovative benchmark product for coal conveying system protection in steel mills, Titan-Shield wear-resistant ceramic liners have become a key choice for more and more steel mills to optimize energy supply and enhance core competitiveness.