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FASTENING SYSTEM FOR FASTENING A MILL LINER Abstract The disclosure relates to a fastening system (100) for fastening a mill liner element (30) to a mill shell (18) of a grinding mill (1), said fastening system comprising a base element (110) having an inner side (111) arranged 5 to face the mill liner (30) and an outer side (112) arranged to face away from the mill liner element (30), said base element (110) having a centrally arranged through-hole (113) extending through the base element interconnecting the outer side (112) with the inner side (111), wherein the base element extends radially outwardly from the centrally arranged through- 10 hole (113) to form a circumferential portion (114), wherein a sealing ring (115) is provided in a annular recess (116) formed in the inner side (111) of the base element (110) at the circumferential portion (114), and a fastening bolt (120). The disclosure further relates to a mill liner assembly and a grinding mill. 15 Elected for publication: Fig. 6A. 1 FASTENING SYSTEM FOR FASTENING A MILL LINER Field of the invention The present disclosure relates to fastening system for fastening a mill liner to a mill shell of a grinding mill. The disclosure further relates to a grind 5 mill. Background A stirred mill, also known as attritor mill, is a type of mill used for grinding and mixing materials such as chemicals, ores, pyrotechnics, paints, 10 and ceramics. It consists of a vertical vessel with a central shaft and impellers that stir the media in a specific pattern. Stirred bead grinding mills are typically used in mineral processing to grind mineral ore particles into smaller sized particles to facilitate further downstream processing, such as separation of the valuable mineral particles 15 from unwanted gangue. For example, mineral ore particles in the range of about 30µm to 4000µm in diameter may be ground down to particles of 5 to 100 µm in diameter. This process is commonly known as fine and ultra-fine grinding. A stirred bead grinding mill typically has a stationary mill body or shell 20 and an internal drive shaft. The shell and the drive shaft can be arranged vertically in the mill; this kind of mill is also known as a tower mill. The drive shaft has a plurality of stirring elements, such as rotor disks or rotors, so that rotation of the drive shaft also rotates the stirring elements, which in turn stirs a suitable grinding media, and the mineral ore particles, in the form of a feed 25 slurry, passes through this stirred bed of media. The resulting stirring action causes the mineral ore particles to be ground into smaller sized particles. In other words, in contrast to tumbling mills such as ball mills where motion is imparted to the charge via the rotation of the mill shell, in tower and stirred mills motion is im...