Gravity recovery system and method for recovery of heavy metals from sands and gravels
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United States of America Patent
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Aug 25, 2015
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N/A
app pub date -
Jun 2, 2014
filing date -
Jun 3, 2013
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Abstract
A gravity separation system for separating and recovering heavy metal particles from a slurry of suspended particles. The separation system includes a channeling member with an interior space, for guiding a flow of a slurry of suspended particles, and a magnetic member situated external to the channeling member. The magnetic member includes a geometrically patterned array of magnets, for generating a geometrically patterned magnetic field extending into the interior space of the channeling member. Magnetic particles such as magnetite, suspended in the slurry, are assembled by the geometrically patterned magnetic field into a correspondingly patterned array of riffles within the channeling member. The array of riffles promotes the sedimentation of heavy particles from the slurry. The geometrically patterned magnetic field is interruptible, to allow disassembly of the riffles and recovery of the settled heavy particles. A method for the gravity separation and recovery of heavy metal particles from a flow of slurry. A magnetic field system for producing an interruptible geometrically patterned magnetic field at a surface.
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