Process for operating a short-belt type magnetic separator
AssigneeUSX Corporation
InventorRobert W. Salmi
Life of this patent
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Abstract
The invention is of a process for increasing the productivity and separation efficiency of a short-belt type dry magnetic separator such as is used for separation of magnetic iron ore from gangue. The process includes providing magnets extending in an arc within the pulley head which begins at a location spaced beyond the point where substantially all of the particles are thrown off of the belt surface in the direction of belt travel.
Claims9
A process for separating magnetic ore particles from non-magnetic particles using a short belt magnetic separator having a pulley head with axial pole permanent magnets located within said pulley head, said magnets being mounted in a fixed position within said pulley head during operation of said separator and generating a magnetic field said process comprising:
- feeding a mixture of magnetic and non-magnetic particulate materials onto a feed end portion of an endless belt of said short belt magnetic separator,
- positioning said axial pole magnets within the pulley head so that said magnets extend along an arc beginning at a location spaced at least one degree beyond the point of tangency T of an upper surface of the belt with the pulley head
- projecting both the magnetic and non-magnetic particles off the belt at the point of tangency T by operating the belt at a speed and angle of inclination sufficient therefor, and 14
- drawing the magnetic particulates by said magnetic field back toward the belt after they have been projected therefrom so as to obtain a more effective separation of said magnetic and non-magnetic particles than when said magnetic particles are not projected from the belt at said point of tangency.
Dependencies are inferred from the claim text.