Mill magnet separator and method for separating
AssigneeEriez Manufacturing Co.
InventorsMichael J. Mankosa, Marshall A. Carner, Daniel A. Norrgran
Life of this patent
Estimating the term…
Abstract
A top feed, wet drum magnetic separator capable of treating, removing tramp metal from the full flow discharge of a grinding mill having a feed box which provides overflow capacity, velocity break to minimize turbulence, and spread the slurry evenly across the drum surface. A flow transition is provided to the rotating drum surface. A fixed magnet assembly is supported inside the drum. Barrier walls contain the flow and a cover confines the flow over the drum. A partitioned product hopper collects metallic fragments separately from the bulk slurry flow. A spray bar is provided to clean the drum.
Claims24
A magnetic separator to remove magnetic contaminants from a slurry discharge of an operating grinding mill comprising:
- a separator, a feed box on top of said separator and a partitioned product hopper around and below said separator;
- said separator comprises a drum rotatable about an axis, a fixed magnet assembly inside the drum and a cover;
- said drum having an outer generally cylindrical surface;
- barrier walls attached to said drum surface and extend outwardly therefrom forming a channel for slurry flow;
- said cover is supported over said barrier walls to guide the slurry around the curvature of said drum.
A magnetic separator to remove magnetic contaminants from a slurry discharge of an operating grinding mill comprising:
- a separator, a feed box on top of said separator and a partitioned product hopper around and below said separator;
- said separator comprises a drum rotatable about an axis and having an outer surface;
- a fixed magnet assembly positioned inside the drum and adjacent the inside surface of the drum from a point adjacent a top of the drum to a point past a bottom of the drum;
- said drum having an outer generally cylindrical surface;
- said feed box comprises a velocity break section and a feed introducer section;
- said velocity break section receives the slurry flow and spread it evenly across said separator;
- said feed introducer provides a transition to said drum surface;
- said transition comprises a flexible member having a final discharge edge which engages said drum surface.
A method of removing metallic contaminants from a slurry flow comprising the steps of:
- minimizing the turbulence in the slurry;
- spreading the slurry evenly across an outer surface of a rotating drum at a point adjacent the highest point of the drum;
- rotating the drum with the flow of the slurry;
- confining the slurry between a cover and the drum's outer surface;
- separating the metallic contaminants from the slurry flow by magnets provided inside the rotating drum along an arc extending from generally the top of the drum to a point past the bottom of the drum;
- conveying the bulk of the slurry to further processing;
- conveying the metallic contaminates to a collecting place.
A magnetic separator to remove magnetic contaminants from a slurry discharge of an operating grinding mill comprising:
- a separator, a feed box on top of the separator and a partitioned product hopper around and below the separator;
- the separator comprises a drum rotatable about an axis, a fixed magnet assembly and a cover;
- the drum having an outer generally cylindrical surface;
- barrier walls attached to the drum surface and extend outwardly therefrom forming a channel for slurry flow;
- a cover is supported over the barrier walls to guide the slurry around the curvature of the drum;
- the feed box comprises a velocity break section and a feed introducer section;
- the velocity break section receives the slurry flow and spreads it evenly across the separator;
- the feed introducer provides a transition to the drum surface,
- the transition comprises a flexible member having a final discharge edge which engages the drum surface;
- the partitioned product hopper comprises a container which receives the separated output from the separator;
- a splitter is provided to separate the magnetic collection area and the nonmagnetic collection area.
Dependencies are inferred from the claim text.