Lifter bar, method for making a lifter bar, method for assembling a lifter bar and a grinding mill

A lifter bar mountable to a shell of a grinding mill for ore grinding, said lifter bar having a volume, said lifter bar further having an outer surface comprising a fixing surface to be arranged against the shell and a wear surface facing toward interior of the grinding mill, the lifter bar comprises

• a lifter bar body having an outer surface conforming the outer surface of the lifter bar, and
• a fixing element for connecting the lifter bar to the shell of the grinding mill,
• the lifter bar body further comprising a first portion and a second portion forming a continuous lifter bar body,
• the fixing element is embedded to the first portion such that it forms part of the fixing surface of the lifter bar, said first portion of the lifter bar body is made of rubber,
• the second portion is made of polyurethane and forming 35-85% of the volume of the lifter bar.