Comminution device

A device for commuting particulate material having a predetermined minimum size suitable for use in a cooling apparatus for cooling material, said device being fed by a material source and comprising an assembly of at least three rolls in series, wherein the two rolls furthest away from the source are crushing rolls and the remaining roll or rolls are transport rolls which are located adjacent to the crushing roll nearest to the material source, with there being a gap between each transport roll and the roll located adjacent thereto, and serve to transport at least some of said material of said predetermined size to a material crushing gap located between said two crushing rolls while screening out smaller material through the gap located between each transport roll and the roll located adjacent thereto, wherein the position of at least one of said crushing rolls relative to the other crushing roll is adjustable to thereby change the dimension of the material crushing gap.

A grate type cooling apparatus for cooling material that has been heated by a kiln, said apparatus having a material inlet for material exiting said kiln and a material outlet, said apparatus comprising at least one grate assembly for transporting material through said apparatus from said material inlet to said material outlet, said apparatus also comprising a roll crushing device for comminuting material of a predetermined minimum size that enters said device from a material source, said device comprising at least three rolls located adjacent and in series, with the two rolls furthest from the material source being rolls for crushing material, with the remaining rolls being rolls for transporting said material of said predetermined size to said crushing rolls, while screening out smaller material through a gap located between each transport roll and the roll located adjacent thereto, wherein the position of at least one of said rolls relative to the roll or rolls adjacent thereto is vertically adjustable.

A comminution device suitable for use in a cooling apparatus for cooling particulate material, said device comprising an assembly of at least two crushing rolls acting in combination to crush said material of a predetermined size in a material crushing gap located between said two crushing rolls and at least one transport roll located adjacent to one of said crushing rolls which serves to aid in delivering material of said predetermined size to said material gap while screening out smaller material in a gap located between each transport roll and the roll located adjacent thereto, wherein the centerline of all the rolls are on the same horizontal plane, and wherein at least one of the rolls is of a different sized diameter than the other rolls.

A comminution device suitable for use in a cooling apparatus for cooling particulate material, said device being fed by a material source and comprising an assembly of at least two crushing rolls acting in combination to crush said material of a predetermined size in a material crushing gap located between said two crushing rolls and at least one transport roll located adjacent to one of said crushing rolls which serves to aid in delivering material of said predetermined size to said material gap while screening cut smaller material in a gap located between each transport roll and the roll located adjacent thereto, wherein the rolls are similarly sized, and the centerlines of all the rolls are not on the same horizontal plane, and wherein the crushing roll nearest the source of material is at a lower level than any other roll in the device.