Thickener/clarifier feedwell assembly with infeed rotation

摘要

A feedwell assembly for a thickener/clarifier includes a feedwell body, at least one infeed conduit connected at a downstream end to the body, and at least one spin or rotation inducement element disposed as part of the infeed conduit for imparting rotation or spin to a slurry stream fed to the feedwell body via the infeed conduit. The spin or rotation inducement element may be a fixed and rigid structural member such as a vane or baffle, or include actively operated elements. Multiple such spin or rotation inducement elements may be provided in various locations in or adjacent the infeed conduit.

主权项

1. A feedwell assembly for a thickener/clairifer tank comprising:
a feedwell body; at least one infeed conduit connected to the feedwell body; and at least one spin or rotation inducement element disposed in said infeed conduit for imparting rotation or spin to a slurry stream fed to said feedwell body via said infeed conduit; wherein said infeed conduit is connected to said feedwell body to deliver said slurry stream to flow along a circular path inside said feedwell body, said slurry stream having a substantially circular inner boundary and a substantially circular outer boundary extending parallel to said path, each of said spin or rotation inducement element being configured for providing said slurry stream with an upward velocity component at said inner boundary and a downward velocity component at said outer boundary; and wherein said feedwell body has an inner side, the inner side having a shelf or ledge, said circular path being disposed above said shelf or ledge.