Grate support element and open-ended grinding mill
AssigneeMetso Finland Oy
InventorsDamon Bordi, Martin Vettorato
Life of this patent
Estimating the term…
Abstract
A grate support element for supporting a grate of an open-ended grinding mill that includes an outer perimeter section, an inner section, and at least one vane extending between the outer perimeter section and the inner section. The grate support element further includes a mounting flange at the outer perimeter of the grate support element configured to enable mounting of the grate support element to a shell of the grinding mill at an area of the shell not intruding to the grinding mill volume. The mounting flange extends outwards from the middle of the cross section of the grinding mill.
Claims17
A grate support element configured to support a discharge grate of an open-ended grinding mill devoid of a discharge trunnion, pulp lifters to lift ground material to the discharge trunnion or a solid discharge head plate or a discharge grate of a semi-open-ended grinding mill including a partial head plate at a discharge end extending partially from a perimeter of a shell towards a longitudinal axis of a drum but no discharge trunnion or traditional pulp lifters, whereby ground material is configured to be discharged from the discharge grate straight to the atmosphere, wherein the grate support element comprises:
- an outer perimeter section directed away from a middle of a cross section of the open-ended grinding mill in a transverse direction of the open-ended grinding mill,
- an inner section directed towards the middle of the cross section of the open-ended grinding mill in the transverse direction of the open-ended grinding mill, and
- a vane extending between the outer perimeter section and the inner section in such a manner that the vane has an inner section side end connected to the inner section and an outer perimeter section side end connected to the outer perimeter section,
- wherein the grate support element includes a mounting flange at an outer perimeter of the grate support element that is configured to enable mounting of the grate support element to a shell of the open-ended grinding mill at an area of the shell not intruding to a grinding mill volume, the mounting flange extending outwards from the middle of the cross section of the open-ended grinding mill.
An open-ended grinding mill configured to grind material, comprising:
- a shell including an inner volume for the material to be ground;
- and
- at least one grate support element mounted to the shell at a discharge end of the grinding mill, the grate support element comprising:
- an outer perimeter section directed away from a middle of a cross section of the grinding mill in a transverse direction of the grinding mill,
- an inner section directed towards the middle of the cross section of the grinding mill in the transverse direction of the grinding mill, and
- at least one vane extending between the outer perimeter section and the inner section in such a manner that the vane has an inner section side end connected to the inner section and an outer perimeter section side end connected to the outer perimeter section,
- wherein the grate support element includes a mounting flange at an outer perimeter of the grate support element that is configured to enable mounting of the grate support element to a shell of the grinding mill at an area of the shell not intruding to the grinding mill volume, the mounting flange extending outwards from the middle of the cross section of the grinding mill,
- wherein the open-ended grinding mill is either a fully open-ended grinding mill, wherein the fully open-ended grinding mill does not have a discharge trunnion, pulp lifters to lift ground material to the discharge trunnion or a solid discharge head plate, or
- a semi-open-ended grinding mill, wherein the semi-open-ended grinding mill includes a partial head plate at the discharge end extending partially from a perimeter of a shell towards a longitudinal axis of a drum but no discharge trunnion or pulp lifters,
- whereby the ground material is configured to be discharged from the discharge grate straight to the atmosphere.
Dependencies are inferred from the claim text.