Dual zone feedwell for a thickener
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United States of America Patent
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Sep 22, 2009
Grant Date -
Jun 2, 2005
app pub date -
Mar 11, 2003
filing date -
Mar 19, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides an extraction device (1) for liquid suspensions and pulps and is designed for use in the field of mineral processing. The extraction device includes two adjacent upstream and downstream concentric chambers (2) and (3) defining a feedwell (4). The feedwell is centrally located upstream of a third chamber in the form of a thickening tank (5). All three chambers are in sequential unidirectional fluid flow relationship such that feed liquid flows firstly from chamber (2) to chamber (3) and then to the tank (5).
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