Method for removing a particulate contaminant material from a particulate mixed lithium metal phosphate material
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United States of America Patent
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Jan 24, 2017
Grant Date -
Jan 3, 2013
app pub date -
Oct 13, 2010
filing date -
Oct 15, 2009
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Abstract
A method for removing a particulate contaminant material from a particulate mixed lithium metal phosphate material is provided. The method includes feeding the particulate mixed lithium metal phosphate material into a fluidizing stage containing particulate mixed lithium metal phosphate material of mass m, feeding the fluidized particulate mixed lithium metal phosphate material through a sifting stage, discontinuing the feed of the particulate mixed lithium metal phosphate material into the fluidizing stage after 10 to 100 times of the mass m have been fed into the fluidizing stage, fluidizing and sifting the material present in the fluidizing stage after discontinuing the feed until the mass of the material present in the fluidizing stage becomes 10% to 100% of the mass m, and removing the remaining material from the fluidizing stage.
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