Abstract: In a method of making a lifter bar for use in a grinding mill, a refurbished lifter bar and a mould for producing the refurbished lifter bar, the lifter bar has a predetermined form and has a base member, and the method includes providing a mould having an interior space that conforms at least partially to the predetermined form, joining the mould and the base member together to form a cavity defined by the base member and the interior space, and filling the cavity with polymer and allowing the polymer to attach to the base member to construct a lifter bar having the predetermined form.

Abstract: A method for making a shell plate that is mountable to a shell of a grinding mill for grinding ore, said shell plate includes a shell plate body having a first portion including a fixing surface for fixing the shell plate body to the shell and a second portion including a wear surface facing toward interior of the grinding mill, said first portion and said second portion forming a continuous shell plate body, the second portion includes polyurethane such that the wear surface is made of polyurethane.

Abstract: In a method of making a lifter bar for use in a grinding mill, a refurbished lifter bar and a mould for producing the refurbished lifter bar, the lifter bar has a predetermined form and has a base member, and the method includes providing a mould having an interior space that conforms at least partially to the predetermined form, joining the mould and the base member together to form a cavity defined by the base member and the interior space, and filling the cavity with polymer and allowing the polymer to attach to the base member to construct a lifter bar having the predetermined form.

Abstract: The invention relates to a method of making a lifter bar (1a, 1c) for use in a grinding mill (2), to a refurbished lifter bar (1b) and to a mould (3) for producing the refurbished lifter bar (1c). The lifter bar (1a, 1c) has a predetermined form and comprises a base member. The method comprises the steps of providing a mould (3) having an interior space (4a) that conforms at least partially to the predetermined form; joining the mould (3) and the base member together to form a cavity (4b) defined by the base member and the interior space (4a); and filling the cavity (4b) with polymer and allowing the polymer to attach to the base member to construct a lifter bar (1a) having the predetermined form.

Abstract: A method for making a shell plate that is mountable to a shell of a grinding mill for grinding ore, said shell plate includes a shell plate body having a first portion including a fixing surface for fixing the shell plate body to the shell and a second portion including a wear surface facing toward interior of the grinding mill, said first portion and said second portion forming a continuous shell plate body, the second portion includes polyurethane such that the wear surface is made of polyurethane.

Abstract: The invention relates to a shell plate, to a method for making a shell plate and to a grinding mill for ore grinding. The shell plate is mountable to a shell of a grinding mill for grinding ore and includes a shell plate body having a first portion including a fixing surface for fixing the shell plate body to the shell, and a second portion having a wear surface facing toward an interior of the grinding mill. The first portion and the second portion form a continuous shell plate body, and the second portion includes polyurethane such that the wear surface is made of polyurethane.

Abstract: A lifter bar, method for making a lifter bar, a method for assembling a lifter bar and a grinding mill for ore grinding is provided. The lifter bar includes a lifter bar body having an outer surface conforming to 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 includes a first portion and a second portion forming a continuous lifter bar body. The fixing element is embedded in the first portion such that it forms part of the fixing surface of the lifter bar. The second portion is made of polyurethane and forms 35-85% of the volume of the lifter bar.

Abstract: This relates to a lifter bar, a method for making a lifter bar, a method for assembling a lifter bar and a grinding mill comprising multiple lifter bars. The lifter bar comprises a lifter bar body having a wear surface and comprising polyurethane (PU), a reinforced wearing plate attached to the lifter bar body and forming part of the wear surface. The reinforced wearing plate comprises metal and a wearing surface for forming a part of the wear surface of the lifter bar, and an attachment structure provided to the reinforced wearing plate for attaching the reinforced wearing plate to the lifter bar body. The attachment structure protrudes into the lifter bar body for forming a connection with polyurethane (PU).

Abstract: The invention relates to a shell plate, to method for making a shell plate and to a grinding mill for ore grinding. The shell plate is mountable to a shell of a grinding mill for grinding ore, said shell plate comprises a shell plate body having a first portion comprising a fixing surface for fixing the shell plate body to the shell and a second portion comprising a wear surface facing toward interior of the grinding mill, said first portion and said second portion forming a continuous shell plate body, the second portion comprises polyurethane such that the wear surface is made of polyurethane.

Abstract: This relates a lifter bar, method for making a lifter bar, a method for assembling a lifter bar and a grinding mill for ore grinding. 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 comprises 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. The second portion is made of polyurethane and forming 35-85% of the volume of the lifter bar.

Abstract: The invention relates to a method of making a lifter bar (1a, 1c) for use in a grinding mill (2), to a refurbished lifter bar (1b) and to a mould (3) for producing the refurbished lifter bar (1c). The lifter bar (1a, 1c) has a predetermined form and comprises a base member. The method comprises the steps of providing a mould (3) having an interior space (4a) that conforms at least partially to the predetermined form; joining the mould (3) and the base member together to form a cavity (4b) defined by the base member and the interior space (4a); and filling the cavity (4b) with polymer and allowing the polymer to attach to the base member to construct a lifter bar (1a) having the predetermined form.