composite mill liner,Why & where to use Metal Liner & Rubber Liner in grinding mill .Apr 4, 2018 . You will know best if rubber or steel is appropriate or a composite liner - rubber in a smaller ball mill is good - rod mills have steel cast head liners and steel capped shell lifters and rubber shell plates - SAG mills have rubber grates and pulp discharge systems. The larger SAG AG mills are definitely steel.composite mill liner,Vulco® Ball Mill Liners - The Weir GroupVulco® wear resistant linings to ensure efficient mill operation in Ball Mill applications. . Vulco® wear resistant rubber and metal cap mill liners are versatile, economical and efficient; Rubber and metal cap liners weigh up to 80% less than steel alone and are faster, easier and safer to install . Metal, Rubber, Composite.