In traditional ball mills, metal liners often require numerous bolts to secure them to the inner wall of the mill. However, ceramic liners in ceramic ball mills can often operate without bolts, primarily due to their unique material properties and ingenious physical fastening design.

First, ceramic liners offer significant weight reduction. The density of high-purity alumina ceramic is typically only about one-fifth that of traditional metals like manganese steel. This substantial weight reduction greatly reduces the centrifugal load on the liners during high-speed rotation in the ball mill, eliminating the need for high-strength bolts to withstand the immense forces required by heavy metal liners.

Second, modern ceramic liners widely employ advanced physical self-locking and bonding technologies. Many ceramic liners feature precise interlocking structures, such as snap-fit or dovetail joints, allowing the liners to interlock tightly through interlocking grooves, forming a complete inner lining ring. The centrifugal force of the rotating mill then firmly adheres the liners to the mill wall. On the other hand, high-performance, high-temperature resistant, and high-strength industrial adhesives are also widely used to chemically bond lightweight ceramic sheets directly to the mill body.

This boltless design not only completely eliminates the risks of slurry and powder leakage caused by bolt holes, but also eliminates the cumbersome drilling and installation process, greatly reducing the labor intensity of workers and improving the operational stability and sealing of the ball mill.