Dewatering of aqueous magnetite concentrates
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United States of America Patent
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Issued Date -
Aug 16, 2007
app pub date -
Sep 21, 2006
filing date -
Sep 22, 2005
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Abandoned
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Abstract
One aspect of the invention concerns a method of dewatering an aqueous magnetite slurry concentrate. In the method, the concentrate (78) is deposited on an external surface of a rotating drum (16) in which is located a stationary, permanent magnet (32) so that magnetite in the concentrate is attracted onto the surface of the drum by the magnet. The intensity of the magnet is sufficient to cause the magnetite to form on the drum surface a compacted cake from which water is displaced. The cake is then removed from the drum surface after it has passed the magnet. Other aspects of the invention concern the apparatus used in the method as well as the combination of the dewatering method and apparatus with a method and apparatus for concentrating an initial magnetite slurry feed.
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