Wear resistant element included in a mill lining
AssigneeSkega AB
InventorsKlas-Goran Eriksson, Rolf Stenman
Life of this patent
Estimating the term…
Abstract
A wear resistant lining element for a rotary grinding mill. The element, which is made of elastomeric material, is provided on its leading side with respect to rotation with a hard wear layer made, for example, of steel. The hard wear layer is backed and supported by the elastomeric material of the element to which it is secured by chemical and/or mechanical bonding. With this arrangement, the elastomeric component cushions the hard wear layer and provides damping during grinding impact and minimizes cracking of the hard layer and scrap loss.
Claims12
A wear-resistant lifter element for mounting on a cylindrical wall of a rotary drum of a mill which has a direction of rotation, said element comprising:
- a support layer made of resilient elastomeric material, said support layer having a radially outer end, a radially inner end, a leading side, a trailing side, and two longitudinally-opposite ends;
- first means for securing said radially outer end of said support layer to a cylindrical wall of a rotary drum of a mill, so that the support layer, while disposed within the rotary drum, projects radially inwardly away from the cylindrical wall of the rotary drum;
- at least one wear layer made of metal;
- and
- second means securing each said wear layer to said support layer so that said each said wear layer is backed by said leading side of said support layer from said radially inner end radially throughout at least the radially innermost one-third of the height of each said wear layer;
- each said wear layer being backed by said support layer throughout substantially all of the length and height of each said wear layer;
- and
- said trailing side of said support layer remaining substantially uncovered by each said wear layer, whereby said support layer, in use, remains flexible in a direction circumferentially of the rotary drum of the mill.
A mill comprising:
- a rotary drum having a direction of rotation about a longitudinally-extending axis, said rotary drum including a cylindrical wall having a radially inner surface;
- a plurality of circumferentially-spaced wear-resistant lifter elements mounted on said radially inner surface of said cylindrical wall of said rotary drum, each said wear-resistant lifter element comprising:
- a support layer made of resilient elastomeric material, said support layer having a radially outer end, a radially inner end, a leading side, a trailing side, and two longitudinally-opposite ends;
- first means securing said radially outer end of said support layer to said cylindrical wall of a rotary drum of a mill, so that the support layer is disposed within the rotary drum and projects radially inwardly away from the cylindrical wall of the rotary drum;
- at least one wear layer made of metal;
- and
- second means securing each said wear layer to said support layer so that said each said wear layer is backed by said leading side of said support layer from said radially inner end radially throughout at least the radially innermost one-third of the height of each said wear layer;
- each said wear layer being backed by said support layer throughout substantially all of the length and height of each said wear layer;
- and
- said trailing side of said support layer remaining substantially uncovered by each said wear layer, whereby said support layer, in use, remains flexible in a direction circumferentially of the rotary drum of the mill.
Dependencies are inferred from the claim text.