Method and system for grinding fragmentary starting material
AssigneeThyssenkrupp Industrial Solutions AG
InventorEgbert Burchardt
Life of this patent
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Abstract
Disclosed herein is a method and system for grinding fragmentary starting material, in particular ores, with a dry grinding system. An embodiment of the method includes the steps of determining the moisture of starting material for a certain period of time, preparing at least one screening stage, the cut point of which is selected depending on the determined moisture in such a manner that the moisture of a screen oversize does not exceed a predetermined moisture limit value when starting material having the determined moisture is fed to the screening stage, feeding starting material to the screening stage, transferring a screen oversize arising in the screening stage to the dry grinding system, and grinding the screen oversize in the dry grinding system.
Claims13
A method for grinding fragmentary starting material, in particular ores, with a dry grinding system, the method comprising:
- determining the moisture of starting material for a certain period of time;
- preparing at least one screening stage, the cut point of which is selected depending on the determined moisture in such a manner that the moisture of a screen oversize does not exceed a predetermined moisture limit value (ψG) when starting material having the determined moisture is fed to the screening stage;
- feeding starting material to the screening stages;
- transferring a screen oversize arising in the screening stage to the dry grinding system;
- and
- grinding the screen oversize in the dry grinding system.
A system for grinding fragmentary starting material, comprising:
- a dry grinding systems;
- a wet grinding systems;
- and
- at least one screening stage which has a screen oversize outlet connected to the dry grinding system and a screen undersize outlet connected to the wet grinding system, wherein the screening stage has a cut point which is defined depending on a determined moisture of a starting material in such a manner that the moisture of a screen oversize does not exceed a predetermined moisture limit value (ψG) when starting material having the determined moisture is fed to the screening stage.
A system for grinding fragmentary starting material, comprising:
- a dry grinding system;
- a drying device;
- and
- at least one screening stage which has a screen oversize outlet connected to the dry grinding system and a screen undersize outlet connected to the drying device, wherein the screening stage has a cut point which is defined depending on a determined moisture of a starting material in such a manner that the moisture of a screen oversize does not exceed a predetermined moisture limit value (ψG) when starting material having the determined moisture is fed to the screening stage.
Dependencies are inferred from the claim text.