Abstract: In order to improve the operation efficiency and life cycle economy of the tower mill in fine grinding and ultra-fine grinding operations，a comparative analysis of material composition，structural characteristics and wear resistance mechanism is systematically carried out for four types of mainstream cyl⁃ inder wear-resistant liners，including high manganese alloy steel liner，grid frame liner，rubber magnetic liner and stainless steel magnetic liner.Taking the ZTM-1250 tower mill produced by a mining equipment company as the research object，the purchase cost and wear resistance life of various lining plates are quantitatively evaluated. Combined with the typical mineral working conditions and the trend of large-scale equipment，the adaptation scenarios and selection principles are clarified.The results show that the stain⁃ less steel magnetic lining plate has the wear resistance characteristics of the same life as the equipment and the optimal comprehensive cost performance in the processing of magnetic minerals. The grille frame lining plate shows the best versatility and reliability in the mainstream working conditions such as large-scale tower mill and ceramic ball grinding.It provides a reliable basis for the scientific selection and process opti⁃ mization of the wear-resistant lining plate of the tower mill，and has important practical significance for promoting the cost reduction and efficiency increase of the mineral processing industry and ensuring the safety of national strategic resources.

Key words: tower mill, cylinder liner, wear resistance life, grinding