Mono roller grinding mill
AssigneeCanada Mining Innovation Council
InventorLawrence K. Nordell
Life of this patent
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Abstract
A crushing mill with a single roller inside a driven cylindrical shell inner surface, both with horizontal and parallel but offset axes is disclosed. In some embodiments, the roller has protrusions such that as the roller and shell rotate rock or other material may be crushed between the shell and the roller, respectively. In some embodiments, the shell and the roller each have surface protrusions such that rock or other materials may be crushed between the shell and the roller as they rotate. In some embodiments the shell and the roller operate at differential speeds with respect to each other to induce shear forces on the material to be crushed.
Claims14
A mono roll grinding mill (MRGM) comprising:
- a shell having a chamber having a cylindrical inner surface, wherein at least a portion of the inner surface of said shell comprises a first plurality of ridges extending along an axial direction of said shell;
- a floating roller located within the shell, said roller comprising a cylindrical outer surface, wherein at least a portion of the outer surface of the roller comprises a second plurality of ridges extending along an axial direction of said roller;
- wherein the shell is configured to rotate about a shell axis, said shell axis being offset from and parallel to a roller axis;
- wherein the MRGM is configured to receive material in the chamber, and wherein said material is comminuted by a weight of said roller without an external pressure system in a fracture zone located between the inner surface of the shed and the outer surface of the rover, and wherein said first plurality of ridges and said second plurality of ridges extend helically in said axial direction of said shell and configured to control a number of circumferential passes of said material through said fracture zone.
Dependencies are inferred from the claim text.