Abstract: Aiming at the problems in the material performance，structural adaptation，installation process，and lifespan management of mill liners，systematic optimization is carried out in terms of material upgrades，structural optimization，and coordinated parameter regulation.By employing high-chromium al⁃ loy steel，metal-ceramic composite materials，and surface strengthening techniques，the service life of lin⁃ ers can be extended by 30%~50%.The structural characteristics of wave-patterned，step-type，and seg⁃ mented liners are compared and analyzed.In practical applications，liner structural forms should be rea⁃ sonably selected and matched to improve grinding efficiency.A coordinated regulation mechanism between liner parameters and mill operating conditions is established，grinding parameters are reasonably set，and the grinding process is promoted toward intelligentization and high efficiency，thereby enhancing the over⁃ all system energy efficiency.Combined with industrial practice at a mineral processing plant in northwest China，it is shown that through scientifically improving liner materials and structures，along with optimiz⁃ ing operational parameters，grinding efficiency is significantly improved.Finally，key technical points such as heat treatment control during manufacturing，installation accuracy assurance，and dynamic re⁃ placement management are clarified，providing a reference for grinding equipment to achieve efficient， low-consumption and stable operation.

Key words: mill liner plate, beneficiation efficiency, high wear-resistant material, structural optimi? zation