Method for concentrating ore slurries by means of intensive agitation conditioning and simultaneous flotation, and an apparatus for the same
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United States of America Patent
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Jun 15, 1993
Grant Date -
N/A
app pub date -
Jun 2, 1992
filing date -
Jun 5, 1991
priority date (Note) -
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Abstract
The present invention relates to a method for concentrating a certain mineral fraction attached to air bubbles from a slurry to the foam layer accumulated on the surface, so that the concentration takes place in three different mixing zones. The apparatus of the invention is formed of a colon-like flotation arrangement and of flow guides, a flow attenuator and an agitator belonging thereto. The flotation reactions are created in the bottom zone, wherefrom air bubbles and mineral particles carried by them are directed in a controlled fashion onto the surface of the apparatus. The flotation apparatus is so designed, that a strong agitation in the bottom zone can be used without causing harmful separation of the foam in the bottom part of the apparatus.
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