US Patent 7591946 Dual zone feedwell for a thickener

Patent 7591946 was granted and assigned to Outotec on September, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Outotec

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75919460

Date of Patent

September 22, 2009

Patent Application Number

105077150

Date Filed

March 11, 2003

Patent Primary Examiner

‌

Peter A. Hruskoci

Patent 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).