Vertical grinding mill, grinding media handling system, grinding media discharge device, and method for handling grinding media
AssigneeMetso Minerals Industries, Inc.
InventorsPeter Henry Radziszewski, Lars Gronvall
Life of this patent
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Abstract
A grinding media handling system for a vertical grinding mill comprises: a reservoir; a pump, such as a sump pump or a horizontal pump, for pumping water and/or a slurry of material to be ground from the reservoir via an inlet in an upper section of the vertical grinding mill into a grinding chamber of the mill; means for adding grinding media to the water and/or slurry upstream and/or downstream of the pump; and means for discharging slurry and grinding media from a lower section of the vertical mill.
Claims19
A grinding media handling system for a vertical grinding mill, the handling system comprising:
- a reservoir,
- a pump, such as a sump pump or a horizontal pump, for pumping water and/or a slurry of material to be ground from the reservoir via an inlet in an upper section of the vertical grinding mill into a grinding chamber of the mill,
- means for adding grinding media to the water and/or slurry upstream and/or downstream of the pump, and
- means for discharging slurry and grinding media from a lower section of the vertical grinding mill.
A method for handling grinding media in a vertical grinding mill, wherein the following steps are performed in this order:
- a) fill the vertical grinding mill with a slurry of material to be ground and start an auger of the vertical mill;
- b) start a pump configured for transporting water and/or slurry from a reservoir via an inlet in an upper portion of the vertical grinding mill into a grinding chamber of the mill;
- d) start adding grinding media, upstream and/or downstream of the pump, to a stream of water and/or slurry being pumped;
- and
- e) continue operating the pump to transport the grinding media into the grinding chamber.
Dependencies are inferred from the claim text.