A multi-stage gradient magnetic separation device

CN122273673APending Publication Date: 2026-06-26XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Filing Date
2026-05-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing wet magnetic drum separators have problems with low grade and recovery rate of ferromagnetic materials when separating fine ferromagnetic materials. This is mainly due to the inclusion of non-ferromagnetic impurities in the mortar and the inability of the magnetic drum to effectively contact the materials in the middle and lower part of the chute.

Method used

A multi-stage gradient magnetic separator is adopted. Several magnetic separation components are set in the chute, and the magnetic separation components are progressively stronger along the slurry flow direction. The magnetic separation rods do not overlap in the direction perpendicular to the flow direction. The magnetic separation is improved by driving the components to reciprocate in the up and down direction and the magnetic parts and non-magnetic sleeves can be detachably connected. Combined with the design of the turbulence device, the magnetic attraction efficiency and recycling effect are improved.

Benefits of technology

It improves the grade and recovery rate of ferromagnetic materials, reduces non-magnetic impurities, lowers production costs and energy consumption, and enhances the magnetic attraction of sediments at the bottom of the sluice.

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Abstract

This invention relates to the field of mineral processing technology. The invention discloses a multi-stage gradient magnetic separation device for magnetic separation of slurry, characterized by comprising: a sluice for conveying slurry; a magnetic separation unit comprising a plurality of magnetic separation components arranged along the slurry flow direction, each magnetic separation component comprising a plurality of magnetic separation rods arranged at intervals, the magnetic separation rods being adapted to magnetically attract ferromagnetic substances in the slurry, the magnetic properties of the plurality of magnetic separation components increasing sequentially in the slurry flow direction; and a driving component adapted to drive the magnetic separation components respectively, causing the magnetic separation components to insert into or leave the sluice. The multi-stage gradient magnetic separation device provided by this invention improves the grade and recovery rate of the separated ferromagnetic substances.
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